/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:26:17,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:26:17,856 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 04:26:17,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:26:17,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:26:17,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:26:17,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:26:17,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:26:17,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:26:17,887 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:26:17,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:26:17,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:26:17,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:26:17,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:26:17,889 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:26:17,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:26:17,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:26:17,890 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:26:17,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:26:17,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:26:17,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:26:17,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:26:17,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:26:17,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:26:17,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:26:17,891 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:26:17,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:26:17,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:26:17,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:26:17,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:26:17,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:26:17,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:26:17,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:26:17,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:26:17,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:26:17,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:26:17,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:26:17,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:26:17,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:26:17,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:26:17,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:26:17,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:26:17,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:26:17,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:26:18,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:26:18,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:26:18,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:26:18,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:26:18,120 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:26:18,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2023-12-19 04:26:19,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:26:19,385 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:26:19,386 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c [2023-12-19 04:26:19,409 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffeea757c/70359ad314404bcf9bdd93d2589a789e/FLAG650296317 [2023-12-19 04:26:19,422 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffeea757c/70359ad314404bcf9bdd93d2589a789e [2023-12-19 04:26:19,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:26:19,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:26:19,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:26:19,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:26:19,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:26:19,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:26:19" (1/1) ... [2023-12-19 04:26:19,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2ce4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:19, skipping insertion in model container [2023-12-19 04:26:19,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:26:19" (1/1) ... [2023-12-19 04:26:19,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:26:19,669 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c[5490,5503] [2023-12-19 04:26:20,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:26:20,085 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:26:20,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15.c[5490,5503] [2023-12-19 04:26:20,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:26:20,278 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:26:20,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20 WrapperNode [2023-12-19 04:26:20,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:26:20,280 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:26:20,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:26:20,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:26:20,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,593 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:26:20,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:26:20,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:26:20,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:26:20,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:26:20,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,776 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 04:26:20,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:26:20,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:26:20,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:26:20,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:26:20,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (1/1) ... [2023-12-19 04:26:20,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:26:20,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:26:20,963 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 04:26:20,969 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 04:26:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:26:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:26:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:26:20,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:26:21,036 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:26:21,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:26:23,469 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:26:23,499 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:26:23,499 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:26:23,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:26:23 BoogieIcfgContainer [2023-12-19 04:26:23,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:26:23,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:26:23,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:26:23,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:26:23,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:26:19" (1/3) ... [2023-12-19 04:26:23,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ee45d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:26:23, skipping insertion in model container [2023-12-19 04:26:23,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:26:20" (2/3) ... [2023-12-19 04:26:23,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ee45d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:26:23, skipping insertion in model container [2023-12-19 04:26:23,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:26:23" (3/3) ... [2023-12-19 04:26:23,506 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15.c [2023-12-19 04:26:23,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:26:23,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:26:23,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:26:23,570 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;@6f5d5b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:26:23,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:26:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 04:26:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 04:26:23,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:23,580 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] [2023-12-19 04:26:23,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:23,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2104242004, now seen corresponding path program 1 times [2023-12-19 04:26:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:23,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921010619] [2023-12-19 04:26:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:23,689 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 04:26:23,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921010619] [2023-12-19 04:26:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921010619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:23,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:23,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:26:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171967582] [2023-12-19 04:26:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:23,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:26:23,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:26:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:26:23,715 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 04:26:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:23,764 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:26:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:26:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-19 04:26:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:23,786 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:26:23,786 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:26:23,792 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 04:26:23,796 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:26:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:26:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:26:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 04:26:23,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:26:23,862 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 35 [2023-12-19 04:26:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:23,862 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:26:23,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 04:26:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:26:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 04:26:23,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:23,863 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] [2023-12-19 04:26:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:26:23,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:23,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1200946327, now seen corresponding path program 1 times [2023-12-19 04:26:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:23,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143001255] [2023-12-19 04:26:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:23,983 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 04:26:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143001255] [2023-12-19 04:26:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143001255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:26:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403807869] [2023-12-19 04:26:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:23,986 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 04:26:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:26,242 INFO L93 Difference]: Finished difference Result 1535 states and 2741 transitions. [2023-12-19 04:26:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:26,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-19 04:26:26,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:26,247 INFO L225 Difference]: With dead ends: 1535 [2023-12-19 04:26:26,247 INFO L226 Difference]: Without dead ends: 1010 [2023-12-19 04:26:26,248 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 04:26:26,249 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 497 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:26,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 197 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:26:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2023-12-19 04:26:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 995. [2023-12-19 04:26:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 1.7364185110663983) internal successors, (1726), 994 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states 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 04:26:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1726 transitions. [2023-12-19 04:26:26,265 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1726 transitions. Word has length 35 [2023-12-19 04:26:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:26,266 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1726 transitions. [2023-12-19 04:26:26,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 04:26:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1726 transitions. [2023-12-19 04:26:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 04:26:26,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:26,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:26:26,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:26:26,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:26,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2063531368, now seen corresponding path program 1 times [2023-12-19 04:26:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112359169] [2023-12-19 04:26:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:26:26,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112359169] [2023-12-19 04:26:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112359169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:26,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:26,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:26:26,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403135517] [2023-12-19 04:26:26,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:26,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:26,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:26,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:26,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:26,402 INFO L87 Difference]: Start difference. First operand 995 states and 1726 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:28,281 INFO L93 Difference]: Finished difference Result 2870 states and 5024 transitions. [2023-12-19 04:26:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:28,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 04:26:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:28,288 INFO L225 Difference]: With dead ends: 2870 [2023-12-19 04:26:28,288 INFO L226 Difference]: Without dead ends: 1876 [2023-12-19 04:26:28,289 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 04:26:28,290 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:28,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 518 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:26:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2023-12-19 04:26:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1869. [2023-12-19 04:26:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.4721627408993576) internal successors, (2750), 1868 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states 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 04:26:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2750 transitions. [2023-12-19 04:26:28,313 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2750 transitions. Word has length 100 [2023-12-19 04:26:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:28,313 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2750 transitions. [2023-12-19 04:26:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:28,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2750 transitions. [2023-12-19 04:26:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 04:26:28,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:28,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:28,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:26:28,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:28,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 357601429, now seen corresponding path program 1 times [2023-12-19 04:26:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173028775] [2023-12-19 04:26:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:26:28,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173028775] [2023-12-19 04:26:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173028775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:28,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:28,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:28,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122446984] [2023-12-19 04:26:28,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:28,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:26:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:28,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:26:28,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:26:28,449 INFO L87 Difference]: Start difference. First operand 1869 states and 2750 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 04:26:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:31,701 INFO L93 Difference]: Finished difference Result 6369 states and 9653 transitions. [2023-12-19 04:26:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:26:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-19 04:26:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:31,714 INFO L225 Difference]: With dead ends: 6369 [2023-12-19 04:26:31,715 INFO L226 Difference]: Without dead ends: 4501 [2023-12-19 04:26:31,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:26:31,726 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1083 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 3475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:31,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 190 Invalid, 3475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:26:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2023-12-19 04:26:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4496. [2023-12-19 04:26:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4495 states have (on average 1.4271412680756397) internal successors, (6415), 4495 states have internal predecessors, (6415), 0 states have call successors, (0), 0 states 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 04:26:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 6415 transitions. [2023-12-19 04:26:31,816 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 6415 transitions. Word has length 105 [2023-12-19 04:26:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:31,818 INFO L495 AbstractCegarLoop]: Abstraction has 4496 states and 6415 transitions. [2023-12-19 04:26:31,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 04:26:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 6415 transitions. [2023-12-19 04:26:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 04:26:31,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:31,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:31,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:26:31,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:31,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1383530739, now seen corresponding path program 1 times [2023-12-19 04:26:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:31,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853875187] [2023-12-19 04:26:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:26:32,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:32,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853875187] [2023-12-19 04:26:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853875187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:32,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:32,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:26:32,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920026895] [2023-12-19 04:26:32,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:32,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:32,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:32,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:32,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:32,037 INFO L87 Difference]: Start difference. First operand 4496 states and 6415 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 04:26:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:33,948 INFO L93 Difference]: Finished difference Result 11973 states and 17430 transitions. [2023-12-19 04:26:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2023-12-19 04:26:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:33,967 INFO L225 Difference]: With dead ends: 11973 [2023-12-19 04:26:33,967 INFO L226 Difference]: Without dead ends: 7478 [2023-12-19 04:26:33,972 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 04:26:33,973 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 364 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:33,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 495 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:26:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2023-12-19 04:26:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 7045. [2023-12-19 04:26:34,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 7044 states have (on average 1.3350369108461102) internal successors, (9404), 7044 states have internal predecessors, (9404), 0 states have call successors, (0), 0 states 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 04:26:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9404 transitions. [2023-12-19 04:26:34,073 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9404 transitions. Word has length 141 [2023-12-19 04:26:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:34,073 INFO L495 AbstractCegarLoop]: Abstraction has 7045 states and 9404 transitions. [2023-12-19 04:26:34,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 04:26:34,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9404 transitions. [2023-12-19 04:26:34,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-19 04:26:34,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:34,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:34,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:26:34,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:34,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash -622822676, now seen corresponding path program 1 times [2023-12-19 04:26:34,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:34,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999356748] [2023-12-19 04:26:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:34,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 67 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 04:26:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999356748] [2023-12-19 04:26:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999356748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:26:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900078219] [2023-12-19 04:26:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:34,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:26:34,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:26:34,392 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 04:26:34,397 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 04:26:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:34,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:26:34,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:26:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-19 04:26:34,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:26:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900078219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:34,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:26:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:26:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47552998] [2023-12-19 04:26:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:26:34,557 INFO L87 Difference]: Start difference. First operand 7045 states and 9404 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 04:26:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:36,498 INFO L93 Difference]: Finished difference Result 18765 states and 25513 transitions. [2023-12-19 04:26:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:36,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 170 [2023-12-19 04:26:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:36,533 INFO L225 Difference]: With dead ends: 18765 [2023-12-19 04:26:36,533 INFO L226 Difference]: Without dead ends: 12146 [2023-12-19 04:26:36,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:26:36,543 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 571 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:36,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 715 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:26:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12146 states. [2023-12-19 04:26:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12146 to 11295. [2023-12-19 04:26:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11295 states, 11294 states have (on average 1.3668319461661058) internal successors, (15437), 11294 states have internal predecessors, (15437), 0 states have call successors, (0), 0 states 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 04:26:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11295 states to 11295 states and 15437 transitions. [2023-12-19 04:26:36,698 INFO L78 Accepts]: Start accepts. Automaton has 11295 states and 15437 transitions. Word has length 170 [2023-12-19 04:26:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:36,699 INFO L495 AbstractCegarLoop]: Abstraction has 11295 states and 15437 transitions. [2023-12-19 04:26:36,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 04:26:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11295 states and 15437 transitions. [2023-12-19 04:26:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 04:26:36,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:36,700 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:36,707 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 04:26:36,907 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,SelfDestructingSolverStorable5 [2023-12-19 04:26:36,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:36,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:36,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2068436520, now seen corresponding path program 1 times [2023-12-19 04:26:36,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:36,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432606433] [2023-12-19 04:26:36,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-19 04:26:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432606433] [2023-12-19 04:26:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432606433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:26:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726509060] [2023-12-19 04:26:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:37,024 INFO L87 Difference]: Start difference. First operand 11295 states and 15437 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:38,641 INFO L93 Difference]: Finished difference Result 23014 states and 31466 transitions. [2023-12-19 04:26:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:38,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-19 04:26:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:38,659 INFO L225 Difference]: With dead ends: 23014 [2023-12-19 04:26:38,659 INFO L226 Difference]: Without dead ends: 11291 [2023-12-19 04:26:38,669 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 04:26:38,670 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 381 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:38,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 581 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:26:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11291 states. [2023-12-19 04:26:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11291 to 8314. [2023-12-19 04:26:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8314 states, 8313 states have (on average 1.2512931552989295) internal successors, (10402), 8313 states have internal predecessors, (10402), 0 states have call successors, (0), 0 states 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 04:26:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8314 states to 8314 states and 10402 transitions. [2023-12-19 04:26:38,778 INFO L78 Accepts]: Start accepts. Automaton has 8314 states and 10402 transitions. Word has length 178 [2023-12-19 04:26:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:38,778 INFO L495 AbstractCegarLoop]: Abstraction has 8314 states and 10402 transitions. [2023-12-19 04:26:38,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8314 states and 10402 transitions. [2023-12-19 04:26:38,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 04:26:38,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:38,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:38,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:26:38,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:38,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:38,781 INFO L85 PathProgramCache]: Analyzing trace with hash 688634754, now seen corresponding path program 1 times [2023-12-19 04:26:38,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:38,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827137266] [2023-12-19 04:26:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:38,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:26:38,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:38,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827137266] [2023-12-19 04:26:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827137266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:38,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217081627] [2023-12-19 04:26:38,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:38,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:38,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:38,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:38,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:38,893 INFO L87 Difference]: Start difference. First operand 8314 states and 10402 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:40,568 INFO L93 Difference]: Finished difference Result 21300 states and 27163 transitions. [2023-12-19 04:26:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:40,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-19 04:26:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:40,584 INFO L225 Difference]: With dead ends: 21300 [2023-12-19 04:26:40,584 INFO L226 Difference]: Without dead ends: 12987 [2023-12-19 04:26:40,589 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 04:26:40,590 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 491 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:40,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 799 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:26:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2023-12-19 04:26:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 12987. [2023-12-19 04:26:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12987 states, 12986 states have (on average 1.2240104728168797) internal successors, (15895), 12986 states have internal predecessors, (15895), 0 states have call successors, (0), 0 states 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 04:26:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12987 states to 12987 states and 15895 transitions. [2023-12-19 04:26:40,724 INFO L78 Accepts]: Start accepts. Automaton has 12987 states and 15895 transitions. Word has length 191 [2023-12-19 04:26:40,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:40,724 INFO L495 AbstractCegarLoop]: Abstraction has 12987 states and 15895 transitions. [2023-12-19 04:26:40,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:40,725 INFO L276 IsEmpty]: Start isEmpty. Operand 12987 states and 15895 transitions. [2023-12-19 04:26:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-19 04:26:40,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:40,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:40,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:26:40,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -680829012, now seen corresponding path program 1 times [2023-12-19 04:26:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470333662] [2023-12-19 04:26:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-19 04:26:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470333662] [2023-12-19 04:26:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470333662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:40,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:40,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158854204] [2023-12-19 04:26:40,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:40,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:40,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:40,857 INFO L87 Difference]: Start difference. First operand 12987 states and 15895 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 04:26:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:42,580 INFO L93 Difference]: Finished difference Result 31486 states and 38491 transitions. [2023-12-19 04:26:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:42,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 288 [2023-12-19 04:26:42,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:42,598 INFO L225 Difference]: With dead ends: 31486 [2023-12-19 04:26:42,598 INFO L226 Difference]: Without dead ends: 17650 [2023-12-19 04:26:42,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:42,615 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 408 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:42,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 943 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:26:42,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17650 states. [2023-12-19 04:26:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17650 to 12113. [2023-12-19 04:26:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12113 states, 12112 states have (on average 1.1775924702774108) internal successors, (14263), 12112 states have internal predecessors, (14263), 0 states have call successors, (0), 0 states 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 04:26:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12113 states to 12113 states and 14263 transitions. [2023-12-19 04:26:42,793 INFO L78 Accepts]: Start accepts. Automaton has 12113 states and 14263 transitions. Word has length 288 [2023-12-19 04:26:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:42,793 INFO L495 AbstractCegarLoop]: Abstraction has 12113 states and 14263 transitions. [2023-12-19 04:26:42,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 04:26:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12113 states and 14263 transitions. [2023-12-19 04:26:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-19 04:26:42,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:42,797 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:42,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:26:42,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:42,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash 291287026, now seen corresponding path program 1 times [2023-12-19 04:26:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460040193] [2023-12-19 04:26:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:42,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-19 04:26:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460040193] [2023-12-19 04:26:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460040193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911014475] [2023-12-19 04:26:42,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:42,930 INFO L87 Difference]: Start difference. First operand 12113 states and 14263 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 04:26:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:44,581 INFO L93 Difference]: Finished difference Result 31030 states and 36607 transitions. [2023-12-19 04:26:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:44,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 305 [2023-12-19 04:26:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:44,602 INFO L225 Difference]: With dead ends: 31030 [2023-12-19 04:26:44,602 INFO L226 Difference]: Without dead ends: 18918 [2023-12-19 04:26:44,616 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 04:26:44,616 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 455 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:44,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 399 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:26:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18918 states. [2023-12-19 04:26:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18918 to 16785. [2023-12-19 04:26:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16785 states, 16784 states have (on average 1.1661105815061963) internal successors, (19572), 16784 states have internal predecessors, (19572), 0 states have call successors, (0), 0 states 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 04:26:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16785 states to 16785 states and 19572 transitions. [2023-12-19 04:26:44,864 INFO L78 Accepts]: Start accepts. Automaton has 16785 states and 19572 transitions. Word has length 305 [2023-12-19 04:26:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:44,865 INFO L495 AbstractCegarLoop]: Abstraction has 16785 states and 19572 transitions. [2023-12-19 04:26:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 04:26:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 16785 states and 19572 transitions. [2023-12-19 04:26:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-19 04:26:44,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:44,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:26:44,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:44,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2069520865, now seen corresponding path program 1 times [2023-12-19 04:26:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778780653] [2023-12-19 04:26:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:44,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 04:26:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778780653] [2023-12-19 04:26:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778780653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:45,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639684345] [2023-12-19 04:26:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:45,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:45,109 INFO L87 Difference]: Start difference. First operand 16785 states and 19572 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 04:26:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:46,851 INFO L93 Difference]: Finished difference Result 40430 states and 47470 transitions. [2023-12-19 04:26:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:46,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 349 [2023-12-19 04:26:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:46,875 INFO L225 Difference]: With dead ends: 40430 [2023-12-19 04:26:46,875 INFO L226 Difference]: Without dead ends: 22796 [2023-12-19 04:26:46,889 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 04:26:46,890 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 381 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:46,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 913 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:26:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22796 states. [2023-12-19 04:26:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22796 to 22361. [2023-12-19 04:26:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22360 states have (on average 1.1453488372093024) internal successors, (25610), 22360 states have internal predecessors, (25610), 0 states have call successors, (0), 0 states 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 04:26:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 25610 transitions. [2023-12-19 04:26:47,179 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 25610 transitions. Word has length 349 [2023-12-19 04:26:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:47,179 INFO L495 AbstractCegarLoop]: Abstraction has 22361 states and 25610 transitions. [2023-12-19 04:26:47,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 04:26:47,180 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 25610 transitions. [2023-12-19 04:26:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-19 04:26:47,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:47,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:26:47,186 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:47,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1049100023, now seen corresponding path program 1 times [2023-12-19 04:26:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:47,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066898398] [2023-12-19 04:26:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:26:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066898398] [2023-12-19 04:26:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066898398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:47,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974422433] [2023-12-19 04:26:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:47,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:47,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:47,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:47,424 INFO L87 Difference]: Start difference. First operand 22361 states and 25610 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 04:26:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:49,168 INFO L93 Difference]: Finished difference Result 55814 states and 63976 transitions. [2023-12-19 04:26:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:49,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 356 [2023-12-19 04:26:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:49,210 INFO L225 Difference]: With dead ends: 55814 [2023-12-19 04:26:49,210 INFO L226 Difference]: Without dead ends: 33015 [2023-12-19 04:26:49,231 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 04:26:49,231 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 395 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:49,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 752 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:26:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33015 states. [2023-12-19 04:26:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33015 to 28328. [2023-12-19 04:26:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28328 states, 28327 states have (on average 1.1432908532495498) internal successors, (32386), 28327 states have internal predecessors, (32386), 0 states have call successors, (0), 0 states 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 04:26:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28328 states to 28328 states and 32386 transitions. [2023-12-19 04:26:49,615 INFO L78 Accepts]: Start accepts. Automaton has 28328 states and 32386 transitions. Word has length 356 [2023-12-19 04:26:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:49,616 INFO L495 AbstractCegarLoop]: Abstraction has 28328 states and 32386 transitions. [2023-12-19 04:26:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 04:26:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 28328 states and 32386 transitions. [2023-12-19 04:26:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-19 04:26:49,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:49,622 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-12-19 04:26:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:26:49,623 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:49,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1886740536, now seen corresponding path program 1 times [2023-12-19 04:26:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359909133] [2023-12-19 04:26:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:49,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-19 04:26:49,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:49,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359909133] [2023-12-19 04:26:49,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359909133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:49,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:49,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:49,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468067982] [2023-12-19 04:26:49,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:49,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:49,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:49,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:49,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:49,870 INFO L87 Difference]: Start difference. First operand 28328 states and 32386 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 04:26:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:51,691 INFO L93 Difference]: Finished difference Result 70281 states and 80281 transitions. [2023-12-19 04:26:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:51,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 431 [2023-12-19 04:26:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:51,736 INFO L225 Difference]: With dead ends: 70281 [2023-12-19 04:26:51,736 INFO L226 Difference]: Without dead ends: 41088 [2023-12-19 04:26:51,759 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 04:26:51,759 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 446 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:51,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 647 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:26:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41088 states. [2023-12-19 04:26:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41088 to 36399. [2023-12-19 04:26:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36399 states, 36398 states have (on average 1.1283587010275289) internal successors, (41070), 36398 states have internal predecessors, (41070), 0 states have call successors, (0), 0 states 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 04:26:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36399 states to 36399 states and 41070 transitions. [2023-12-19 04:26:52,091 INFO L78 Accepts]: Start accepts. Automaton has 36399 states and 41070 transitions. Word has length 431 [2023-12-19 04:26:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:52,091 INFO L495 AbstractCegarLoop]: Abstraction has 36399 states and 41070 transitions. [2023-12-19 04:26:52,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 04:26:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 36399 states and 41070 transitions. [2023-12-19 04:26:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-19 04:26:52,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:52,099 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:26:52,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:52,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1557761263, now seen corresponding path program 1 times [2023-12-19 04:26:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612707992] [2023-12-19 04:26:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:52,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 606 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 04:26:52,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:52,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612707992] [2023-12-19 04:26:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612707992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:52,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:52,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:26:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415044417] [2023-12-19 04:26:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:26:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:26:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:26:52,693 INFO L87 Difference]: Start difference. First operand 36399 states and 41070 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 04:26:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:55,277 INFO L93 Difference]: Finished difference Result 89019 states and 100634 transitions. [2023-12-19 04:26:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:26:55,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 435 [2023-12-19 04:26:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:55,342 INFO L225 Difference]: With dead ends: 89019 [2023-12-19 04:26:55,342 INFO L226 Difference]: Without dead ends: 52621 [2023-12-19 04:26:55,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:26:55,374 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 815 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:55,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 200 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:26:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52621 states. [2023-12-19 04:26:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52621 to 47076. [2023-12-19 04:26:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47076 states, 47075 states have (on average 1.1351460435475305) internal successors, (53437), 47075 states have internal predecessors, (53437), 0 states have call successors, (0), 0 states 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 04:26:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47076 states to 47076 states and 53437 transitions. [2023-12-19 04:26:55,986 INFO L78 Accepts]: Start accepts. Automaton has 47076 states and 53437 transitions. Word has length 435 [2023-12-19 04:26:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 47076 states and 53437 transitions. [2023-12-19 04:26:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 04:26:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 47076 states and 53437 transitions. [2023-12-19 04:26:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-19 04:26:55,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:55,996 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:26:55,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:26:55,996 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:55,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 310832063, now seen corresponding path program 1 times [2023-12-19 04:26:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586765647] [2023-12-19 04:26:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-19 04:26:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586765647] [2023-12-19 04:26:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586765647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:56,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:56,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898134787] [2023-12-19 04:26:56,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:56,416 INFO L87 Difference]: Start difference. First operand 47076 states and 53437 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:26:58,170 INFO L93 Difference]: Finished difference Result 112879 states and 128588 transitions. [2023-12-19 04:26:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:26:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2023-12-19 04:26:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:26:58,247 INFO L225 Difference]: With dead ends: 112879 [2023-12-19 04:26:58,247 INFO L226 Difference]: Without dead ends: 65804 [2023-12-19 04:26:58,285 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 04:26:58,286 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 392 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:26:58,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 312 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:26:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65804 states. [2023-12-19 04:26:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65804 to 64512. [2023-12-19 04:26:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64512 states, 64511 states have (on average 1.127466633597371) internal successors, (72734), 64511 states have internal predecessors, (72734), 0 states have call successors, (0), 0 states 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 04:26:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64512 states to 64512 states and 72734 transitions. [2023-12-19 04:26:59,155 INFO L78 Accepts]: Start accepts. Automaton has 64512 states and 72734 transitions. Word has length 454 [2023-12-19 04:26:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:26:59,155 INFO L495 AbstractCegarLoop]: Abstraction has 64512 states and 72734 transitions. [2023-12-19 04:26:59,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:26:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 64512 states and 72734 transitions. [2023-12-19 04:26:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-12-19 04:26:59,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:26:59,165 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:26:59,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:26:59,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:26:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:26:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1869214909, now seen corresponding path program 1 times [2023-12-19 04:26:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:26:59,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124223192] [2023-12-19 04:26:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:26:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:26:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:26:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-19 04:26:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:26:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124223192] [2023-12-19 04:26:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124223192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:26:59,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:26:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:26:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31920263] [2023-12-19 04:26:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:26:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:26:59,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:26:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:26:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:26:59,666 INFO L87 Difference]: Start difference. First operand 64512 states and 72734 transitions. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 04:27:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:01,627 INFO L93 Difference]: Finished difference Result 142215 states and 159758 transitions. [2023-12-19 04:27:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:27:01,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 455 [2023-12-19 04:27:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:01,729 INFO L225 Difference]: With dead ends: 142215 [2023-12-19 04:27:01,729 INFO L226 Difference]: Without dead ends: 77279 [2023-12-19 04:27:01,744 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 04:27:01,747 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 368 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:01,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 806 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:27:01,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77279 states. [2023-12-19 04:27:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77279 to 74708. [2023-12-19 04:27:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74708 states, 74707 states have (on average 1.1155982705770544) internal successors, (83343), 74707 states have internal predecessors, (83343), 0 states have call successors, (0), 0 states 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 04:27:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74708 states to 74708 states and 83343 transitions. [2023-12-19 04:27:02,644 INFO L78 Accepts]: Start accepts. Automaton has 74708 states and 83343 transitions. Word has length 455 [2023-12-19 04:27:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:02,645 INFO L495 AbstractCegarLoop]: Abstraction has 74708 states and 83343 transitions. [2023-12-19 04:27:02,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 04:27:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 74708 states and 83343 transitions. [2023-12-19 04:27:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-12-19 04:27:02,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:02,655 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:27:02,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:27:02,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:02,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1470424771, now seen corresponding path program 1 times [2023-12-19 04:27:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039514661] [2023-12-19 04:27:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-19 04:27:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039514661] [2023-12-19 04:27:03,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039514661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:27:03,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:27:03,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:27:03,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182271631] [2023-12-19 04:27:03,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:27:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:27:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:27:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:27:03,010 INFO L87 Difference]: Start difference. First operand 74708 states and 83343 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 04:27:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:04,684 INFO L93 Difference]: Finished difference Result 158784 states and 177329 transitions. [2023-12-19 04:27:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:27:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 473 [2023-12-19 04:27:04,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:04,784 INFO L225 Difference]: With dead ends: 158784 [2023-12-19 04:27:04,785 INFO L226 Difference]: Without dead ends: 84077 [2023-12-19 04:27:04,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:27:04,837 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 338 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:04,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 758 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:27:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84077 states. [2023-12-19 04:27:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84077 to 75529. [2023-12-19 04:27:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75529 states, 75528 states have (on average 1.1046764113970977) internal successors, (83434), 75528 states have internal predecessors, (83434), 0 states have call successors, (0), 0 states 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 04:27:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75529 states to 75529 states and 83434 transitions. [2023-12-19 04:27:05,933 INFO L78 Accepts]: Start accepts. Automaton has 75529 states and 83434 transitions. Word has length 473 [2023-12-19 04:27:05,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:05,933 INFO L495 AbstractCegarLoop]: Abstraction has 75529 states and 83434 transitions. [2023-12-19 04:27:05,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 04:27:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 75529 states and 83434 transitions. [2023-12-19 04:27:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-19 04:27:05,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:05,942 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:27:05,942 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:05,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 365353125, now seen corresponding path program 1 times [2023-12-19 04:27:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:05,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875012552] [2023-12-19 04:27:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:05,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-19 04:27:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875012552] [2023-12-19 04:27:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875012552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:27:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:27:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:27:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387239376] [2023-12-19 04:27:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:27:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:27:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:27:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:27:06,431 INFO L87 Difference]: Start difference. First operand 75529 states and 83434 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 04:27:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:08,482 INFO L93 Difference]: Finished difference Result 166392 states and 183604 transitions. [2023-12-19 04:27:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:27:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 478 [2023-12-19 04:27:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:08,607 INFO L225 Difference]: With dead ends: 166392 [2023-12-19 04:27:08,607 INFO L226 Difference]: Without dead ends: 90864 [2023-12-19 04:27:08,653 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 04:27:08,653 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 290 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:08,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 808 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:27:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90864 states. [2023-12-19 04:27:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90864 to 89991. [2023-12-19 04:27:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89991 states, 89990 states have (on average 1.0961106789643293) internal successors, (98639), 89990 states have internal predecessors, (98639), 0 states have call successors, (0), 0 states 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 04:27:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89991 states to 89991 states and 98639 transitions. [2023-12-19 04:27:09,793 INFO L78 Accepts]: Start accepts. Automaton has 89991 states and 98639 transitions. Word has length 478 [2023-12-19 04:27:09,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:09,793 INFO L495 AbstractCegarLoop]: Abstraction has 89991 states and 98639 transitions. [2023-12-19 04:27:09,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 04:27:09,793 INFO L276 IsEmpty]: Start isEmpty. Operand 89991 states and 98639 transitions. [2023-12-19 04:27:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-19 04:27:09,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:09,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:27:09,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:27:09,971 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1826834041, now seen corresponding path program 1 times [2023-12-19 04:27:09,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:09,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14409891] [2023-12-19 04:27:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:09,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-19 04:27:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14409891] [2023-12-19 04:27:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14409891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:27:10,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:27:10,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:27:10,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263685201] [2023-12-19 04:27:10,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:27:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:27:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:27:10,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:27:10,257 INFO L87 Difference]: Start difference. First operand 89991 states and 98639 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 04:27:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:12,309 INFO L93 Difference]: Finished difference Result 191076 states and 209689 transitions. [2023-12-19 04:27:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:27:12,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 478 [2023-12-19 04:27:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:12,443 INFO L225 Difference]: With dead ends: 191076 [2023-12-19 04:27:12,444 INFO L226 Difference]: Without dead ends: 100657 [2023-12-19 04:27:12,490 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 04:27:12,491 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 435 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:12,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 243 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:27:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100657 states. [2023-12-19 04:27:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100657 to 97652. [2023-12-19 04:27:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97652 states, 97651 states have (on average 1.0970496973917319) internal successors, (107128), 97651 states have internal predecessors, (107128), 0 states have call successors, (0), 0 states 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 04:27:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97652 states to 97652 states and 107128 transitions. [2023-12-19 04:27:13,756 INFO L78 Accepts]: Start accepts. Automaton has 97652 states and 107128 transitions. Word has length 478 [2023-12-19 04:27:13,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:13,756 INFO L495 AbstractCegarLoop]: Abstraction has 97652 states and 107128 transitions. [2023-12-19 04:27:13,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 04:27:13,756 INFO L276 IsEmpty]: Start isEmpty. Operand 97652 states and 107128 transitions. [2023-12-19 04:27:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-12-19 04:27:13,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:13,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:13,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:27:13,766 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:13,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:13,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1601743320, now seen corresponding path program 1 times [2023-12-19 04:27:13,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:13,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491642442] [2023-12-19 04:27:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:13,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 17 proven. 84 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 04:27:14,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491642442] [2023-12-19 04:27:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491642442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:27:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852863733] [2023-12-19 04:27:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:14,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:27:14,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:27:14,298 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 04:27:14,300 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 04:27:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:14,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:27:14,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:27:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 04:27:14,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:27:14,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852863733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:27:14,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:27:14,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 04:27:14,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920804997] [2023-12-19 04:27:14,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:27:14,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:27:14,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:14,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:27:14,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:27:14,498 INFO L87 Difference]: Start difference. First operand 97652 states and 107128 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 04:27:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:16,180 INFO L93 Difference]: Finished difference Result 194448 states and 213227 transitions. [2023-12-19 04:27:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:27:16,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 481 [2023-12-19 04:27:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:16,288 INFO L225 Difference]: With dead ends: 194448 [2023-12-19 04:27:16,288 INFO L226 Difference]: Without dead ends: 96369 [2023-12-19 04:27:16,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:27:16,347 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 436 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:16,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 325 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:27:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96369 states. [2023-12-19 04:27:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96369 to 90405. [2023-12-19 04:27:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90405 states, 90404 states have (on average 1.0876952347241273) internal successors, (98332), 90404 states have internal predecessors, (98332), 0 states have call successors, (0), 0 states 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 04:27:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90405 states to 90405 states and 98332 transitions. [2023-12-19 04:27:17,444 INFO L78 Accepts]: Start accepts. Automaton has 90405 states and 98332 transitions. Word has length 481 [2023-12-19 04:27:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:17,445 INFO L495 AbstractCegarLoop]: Abstraction has 90405 states and 98332 transitions. [2023-12-19 04:27:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 04:27:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 90405 states and 98332 transitions. [2023-12-19 04:27:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-12-19 04:27:17,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:17,453 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:27:17,460 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 04:27:17,655 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,SelfDestructingSolverStorable19 [2023-12-19 04:27:17,656 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:17,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1049378488, now seen corresponding path program 1 times [2023-12-19 04:27:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:17,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099105561] [2023-12-19 04:27:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 532 proven. 108 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:27:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099105561] [2023-12-19 04:27:18,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099105561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:27:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370482060] [2023-12-19 04:27:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:18,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:27:18,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:27:18,670 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 04:27:18,674 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 04:27:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:18,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 04:27:18,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:27:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:27:19,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:27:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370482060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:27:19,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:27:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-19 04:27:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757021954] [2023-12-19 04:27:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:27:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:27:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:27:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:27:19,267 INFO L87 Difference]: Start difference. First operand 90405 states and 98332 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 04:27:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:22,767 INFO L93 Difference]: Finished difference Result 222588 states and 242221 transitions. [2023-12-19 04:27:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:27:22,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 512 [2023-12-19 04:27:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:22,907 INFO L225 Difference]: With dead ends: 222588 [2023-12-19 04:27:22,908 INFO L226 Difference]: Without dead ends: 131759 [2023-12-19 04:27:22,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:27:22,966 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 805 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:22,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 225 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:27:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131759 states. [2023-12-19 04:27:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131759 to 102357. [2023-12-19 04:27:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102357 states, 102356 states have (on average 1.0874399155887295) internal successors, (111306), 102356 states have internal predecessors, (111306), 0 states have call successors, (0), 0 states 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 04:27:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102357 states to 102357 states and 111306 transitions. [2023-12-19 04:27:24,498 INFO L78 Accepts]: Start accepts. Automaton has 102357 states and 111306 transitions. Word has length 512 [2023-12-19 04:27:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:24,499 INFO L495 AbstractCegarLoop]: Abstraction has 102357 states and 111306 transitions. [2023-12-19 04:27:24,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 04:27:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 102357 states and 111306 transitions. [2023-12-19 04:27:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-12-19 04:27:24,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:24,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:24,513 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 04:27:24,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:27:24,714 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:24,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash -171213728, now seen corresponding path program 1 times [2023-12-19 04:27:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:24,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906620688] [2023-12-19 04:27:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 336 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:27:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906620688] [2023-12-19 04:27:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906620688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:27:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753096564] [2023-12-19 04:27:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:25,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:27:25,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:27:25,498 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 04:27:25,501 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 04:27:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:25,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:27:25,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:27:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 254 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 04:27:25,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:27:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 254 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 04:27:26,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753096564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:27:26,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:27:26,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-19 04:27:26,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996330248] [2023-12-19 04:27:26,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:27:26,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 04:27:26,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 04:27:26,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:27:26,523 INFO L87 Difference]: Start difference. First operand 102357 states and 111306 transitions. Second operand has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 04:27:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:27:39,268 INFO L93 Difference]: Finished difference Result 302776 states and 330113 transitions. [2023-12-19 04:27:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 04:27:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 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 526 [2023-12-19 04:27:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:27:39,598 INFO L225 Difference]: With dead ends: 302776 [2023-12-19 04:27:39,598 INFO L226 Difference]: Without dead ends: 199995 [2023-12-19 04:27:39,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1061 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-12-19 04:27:39,679 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 9169 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 13135 mSolverCounterSat, 2180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9169 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 15315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2180 IncrementalHoareTripleChecker+Valid, 13135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:27:39,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9169 Valid, 441 Invalid, 15315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2180 Valid, 13135 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-19 04:27:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199995 states. [2023-12-19 04:27:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199995 to 144977. [2023-12-19 04:27:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144977 states, 144976 states have (on average 1.0851934113232535) internal successors, (157327), 144976 states have internal predecessors, (157327), 0 states have call successors, (0), 0 states 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 04:27:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144977 states to 144977 states and 157327 transitions. [2023-12-19 04:27:42,123 INFO L78 Accepts]: Start accepts. Automaton has 144977 states and 157327 transitions. Word has length 526 [2023-12-19 04:27:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:27:42,123 INFO L495 AbstractCegarLoop]: Abstraction has 144977 states and 157327 transitions. [2023-12-19 04:27:42,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 04:27:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 144977 states and 157327 transitions. [2023-12-19 04:27:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-19 04:27:42,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:27:42,132 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:27:42,139 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 04:27:42,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:27:42,334 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:27:42,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:27:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash 274283195, now seen corresponding path program 1 times [2023-12-19 04:27:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:27:42,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765170304] [2023-12-19 04:27:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:42,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:27:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 613 proven. 141 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 04:27:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:27:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765170304] [2023-12-19 04:27:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765170304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:27:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844644096] [2023-12-19 04:27:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:27:43,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:27:43,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:27:43,096 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 04:27:43,099 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 04:27:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:27:43,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:27:43,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:27:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2023-12-19 04:27:44,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:27:44,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844644096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:27:44,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:27:44,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-19 04:27:44,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120967480] [2023-12-19 04:27:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:27:44,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:27:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:27:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:27:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:27:44,158 INFO L87 Difference]: Start difference. First operand 144977 states and 157327 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 04:27:47,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:27:53,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:27:55,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:28:00,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:28:04,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:28:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:06,455 INFO L93 Difference]: Finished difference Result 299754 states and 325285 transitions. [2023-12-19 04:28:06,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 542 [2023-12-19 04:28:06,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:06,853 INFO L225 Difference]: With dead ends: 299754 [2023-12-19 04:28:06,853 INFO L226 Difference]: Without dead ends: 154349 [2023-12-19 04:28:06,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:06,917 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 477 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 309 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:06,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 137 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1175 Invalid, 2 Unknown, 0 Unchecked, 21.6s Time] [2023-12-19 04:28:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154349 states. [2023-12-19 04:28:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154349 to 127467. [2023-12-19 04:28:08,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127467 states, 127466 states have (on average 1.0804136004895424) internal successors, (137716), 127466 states have internal predecessors, (137716), 0 states have call successors, (0), 0 states 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 04:28:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127467 states to 127467 states and 137716 transitions. [2023-12-19 04:28:08,681 INFO L78 Accepts]: Start accepts. Automaton has 127467 states and 137716 transitions. Word has length 542 [2023-12-19 04:28:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:08,682 INFO L495 AbstractCegarLoop]: Abstraction has 127467 states and 137716 transitions. [2023-12-19 04:28:08,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 04:28:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 127467 states and 137716 transitions. [2023-12-19 04:28:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-19 04:28:08,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:08,692 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:08,702 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 04:28:08,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 04:28:08,897 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:08,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1070850009, now seen corresponding path program 1 times [2023-12-19 04:28:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219058761] [2023-12-19 04:28:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:08,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-19 04:28:09,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:09,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219058761] [2023-12-19 04:28:09,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219058761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:09,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:09,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:28:09,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738957518] [2023-12-19 04:28:09,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:09,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:28:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:28:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:09,860 INFO L87 Difference]: Start difference. First operand 127467 states and 137716 transitions. Second operand has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 04:28:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:13,170 INFO L93 Difference]: Finished difference Result 267287 states and 288423 transitions. [2023-12-19 04:28:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:28:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 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 567 [2023-12-19 04:28:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:13,361 INFO L225 Difference]: With dead ends: 267287 [2023-12-19 04:28:13,361 INFO L226 Difference]: Without dead ends: 139821 [2023-12-19 04:28:13,422 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 04:28:13,423 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 744 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2856 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:13,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 380 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2856 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:28:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139821 states. [2023-12-19 04:28:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139821 to 138107. [2023-12-19 04:28:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138107 states, 138106 states have (on average 1.0744790233588692) internal successors, (148392), 138106 states have internal predecessors, (148392), 0 states have call successors, (0), 0 states 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 04:28:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138107 states to 138107 states and 148392 transitions. [2023-12-19 04:28:15,191 INFO L78 Accepts]: Start accepts. Automaton has 138107 states and 148392 transitions. Word has length 567 [2023-12-19 04:28:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:15,191 INFO L495 AbstractCegarLoop]: Abstraction has 138107 states and 148392 transitions. [2023-12-19 04:28:15,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 04:28:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 138107 states and 148392 transitions. [2023-12-19 04:28:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-19 04:28:15,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:15,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:15,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:28:15,201 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:15,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1037677993, now seen corresponding path program 1 times [2023-12-19 04:28:15,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:15,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12244562] [2023-12-19 04:28:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:15,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:28:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12244562] [2023-12-19 04:28:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12244562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:15,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:15,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:28:15,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127395924] [2023-12-19 04:28:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:15,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:15,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:15,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:15,675 INFO L87 Difference]: Start difference. First operand 138107 states and 148392 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 04:28:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:17,895 INFO L93 Difference]: Finished difference Result 299269 states and 321370 transitions. [2023-12-19 04:28:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 570 [2023-12-19 04:28:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:18,127 INFO L225 Difference]: With dead ends: 299269 [2023-12-19 04:28:18,127 INFO L226 Difference]: Without dead ends: 161163 [2023-12-19 04:28:18,174 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 04:28:18,175 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 317 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:18,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 263 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:28:18,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161163 states. [2023-12-19 04:28:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161163 to 155170. [2023-12-19 04:28:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155170 states, 155169 states have (on average 1.0720246956544155) internal successors, (166345), 155169 states have internal predecessors, (166345), 0 states have call successors, (0), 0 states 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 04:28:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155170 states to 155170 states and 166345 transitions. [2023-12-19 04:28:20,896 INFO L78 Accepts]: Start accepts. Automaton has 155170 states and 166345 transitions. Word has length 570 [2023-12-19 04:28:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:20,897 INFO L495 AbstractCegarLoop]: Abstraction has 155170 states and 166345 transitions. [2023-12-19 04:28:20,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 04:28:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 155170 states and 166345 transitions. [2023-12-19 04:28:20,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 04:28:20,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:20,911 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:20,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:28:20,911 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:20,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash -706023552, now seen corresponding path program 1 times [2023-12-19 04:28:20,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187466848] [2023-12-19 04:28:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:28:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:21,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187466848] [2023-12-19 04:28:21,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187466848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:21,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:21,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:28:21,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172528922] [2023-12-19 04:28:21,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:21,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:28:21,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:21,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:28:21,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:21,425 INFO L87 Difference]: Start difference. First operand 155170 states and 166345 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 04:28:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:25,998 INFO L93 Difference]: Finished difference Result 345255 states and 370356 transitions. [2023-12-19 04:28:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:28:25,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 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 590 [2023-12-19 04:28:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:26,241 INFO L225 Difference]: With dead ends: 345255 [2023-12-19 04:28:26,241 INFO L226 Difference]: Without dead ends: 190086 [2023-12-19 04:28:26,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:26,327 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1251 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 3902 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 3902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:26,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 270 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 3902 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 04:28:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190086 states. [2023-12-19 04:28:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190086 to 172198. [2023-12-19 04:28:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172198 states, 172197 states have (on average 1.0679338199852495) internal successors, (183895), 172197 states have internal predecessors, (183895), 0 states have call successors, (0), 0 states 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 04:28:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172198 states to 172198 states and 183895 transitions. [2023-12-19 04:28:28,683 INFO L78 Accepts]: Start accepts. Automaton has 172198 states and 183895 transitions. Word has length 590 [2023-12-19 04:28:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:28,683 INFO L495 AbstractCegarLoop]: Abstraction has 172198 states and 183895 transitions. [2023-12-19 04:28:28,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 04:28:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 172198 states and 183895 transitions. [2023-12-19 04:28:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2023-12-19 04:28:28,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:28,693 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:28:28,693 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:28,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 480953790, now seen corresponding path program 1 times [2023-12-19 04:28:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076543735] [2023-12-19 04:28:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:28,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:28:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:29,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076543735] [2023-12-19 04:28:29,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076543735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:29,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:29,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:28:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924945907] [2023-12-19 04:28:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:28:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:28:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:29,189 INFO L87 Difference]: Start difference. First operand 172198 states and 183895 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 04:28:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:33,317 INFO L93 Difference]: Finished difference Result 395102 states and 422453 transitions. [2023-12-19 04:28:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:28:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 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 590 [2023-12-19 04:28:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:33,641 INFO L225 Difference]: With dead ends: 395102 [2023-12-19 04:28:33,641 INFO L226 Difference]: Without dead ends: 222480 [2023-12-19 04:28:33,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:28:33,715 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1209 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3401 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 3401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:33,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 236 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 3401 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:28:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222480 states. [2023-12-19 04:28:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222480 to 183713. [2023-12-19 04:28:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183713 states, 183712 states have (on average 1.0660653631771468) internal successors, (195849), 183712 states have internal predecessors, (195849), 0 states have call successors, (0), 0 states 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 04:28:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183713 states to 183713 states and 195849 transitions. [2023-12-19 04:28:36,293 INFO L78 Accepts]: Start accepts. Automaton has 183713 states and 195849 transitions. Word has length 590 [2023-12-19 04:28:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:36,293 INFO L495 AbstractCegarLoop]: Abstraction has 183713 states and 195849 transitions. [2023-12-19 04:28:36,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 04:28:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 183713 states and 195849 transitions. [2023-12-19 04:28:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-12-19 04:28:36,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:36,303 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:28:36,304 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:36,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1337169157, now seen corresponding path program 1 times [2023-12-19 04:28:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:36,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783527712] [2023-12-19 04:28:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:28:36,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783527712] [2023-12-19 04:28:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783527712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:36,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:36,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:28:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535742160] [2023-12-19 04:28:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:36,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:28:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:28:36,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:36,830 INFO L87 Difference]: Start difference. First operand 183713 states and 195849 transitions. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 04:28:40,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:40,099 INFO L93 Difference]: Finished difference Result 405001 states and 431302 transitions. [2023-12-19 04:28:40,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:28:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 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 610 [2023-12-19 04:28:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:40,618 INFO L225 Difference]: With dead ends: 405001 [2023-12-19 04:28:40,618 INFO L226 Difference]: Without dead ends: 221714 [2023-12-19 04:28:40,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:40,700 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 676 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:40,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 695 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:28:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221714 states. [2023-12-19 04:28:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221714 to 185849. [2023-12-19 04:28:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185849 states, 185848 states have (on average 1.065053161723559) internal successors, (197938), 185848 states have internal predecessors, (197938), 0 states have call successors, (0), 0 states 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 04:28:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185849 states to 185849 states and 197938 transitions. [2023-12-19 04:28:43,465 INFO L78 Accepts]: Start accepts. Automaton has 185849 states and 197938 transitions. Word has length 610 [2023-12-19 04:28:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:43,467 INFO L495 AbstractCegarLoop]: Abstraction has 185849 states and 197938 transitions. [2023-12-19 04:28:43,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 04:28:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 185849 states and 197938 transitions. [2023-12-19 04:28:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2023-12-19 04:28:43,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:43,484 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:28:43,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:28:43,484 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:43,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1120274617, now seen corresponding path program 1 times [2023-12-19 04:28:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117440733] [2023-12-19 04:28:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 821 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2023-12-19 04:28:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117440733] [2023-12-19 04:28:44,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117440733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:44,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:44,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:28:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064306454] [2023-12-19 04:28:44,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:44,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:28:44,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:28:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:44,111 INFO L87 Difference]: Start difference. First operand 185849 states and 197938 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 04:28:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:47,461 INFO L93 Difference]: Finished difference Result 377679 states and 402172 transitions. [2023-12-19 04:28:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:28:47,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 689 [2023-12-19 04:28:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:47,720 INFO L225 Difference]: With dead ends: 377679 [2023-12-19 04:28:47,721 INFO L226 Difference]: Without dead ends: 192256 [2023-12-19 04:28:47,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:47,800 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 879 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:47,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 265 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:28:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192256 states. [2023-12-19 04:28:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192256 to 187554. [2023-12-19 04:28:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187554 states, 187553 states have (on average 1.060910782552132) internal successors, (198977), 187553 states have internal predecessors, (198977), 0 states have call successors, (0), 0 states 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 04:28:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187554 states to 187554 states and 198977 transitions. [2023-12-19 04:28:50,250 INFO L78 Accepts]: Start accepts. Automaton has 187554 states and 198977 transitions. Word has length 689 [2023-12-19 04:28:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:50,250 INFO L495 AbstractCegarLoop]: Abstraction has 187554 states and 198977 transitions. [2023-12-19 04:28:50,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 04:28:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 187554 states and 198977 transitions. [2023-12-19 04:28:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-12-19 04:28:50,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:50,265 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:28:50,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 04:28:50,266 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:50,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2028594460, now seen corresponding path program 1 times [2023-12-19 04:28:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836914470] [2023-12-19 04:28:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:50,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-12-19 04:28:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836914470] [2023-12-19 04:28:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836914470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:50,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:28:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034169845] [2023-12-19 04:28:50,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:28:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:28:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:50,693 INFO L87 Difference]: Start difference. First operand 187554 states and 198977 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 04:28:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:53,901 INFO L93 Difference]: Finished difference Result 384079 states and 407455 transitions. [2023-12-19 04:28:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:28:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 695 [2023-12-19 04:28:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:54,184 INFO L225 Difference]: With dead ends: 384079 [2023-12-19 04:28:54,184 INFO L226 Difference]: Without dead ends: 196951 [2023-12-19 04:28:54,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:28:54,271 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 886 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:54,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 272 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:28:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196951 states. [2023-12-19 04:28:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196951 to 186704. [2023-12-19 04:28:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186704 states, 186703 states have (on average 1.0607863826505197) internal successors, (198052), 186703 states have internal predecessors, (198052), 0 states have call successors, (0), 0 states 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 04:28:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186704 states to 186704 states and 198052 transitions. [2023-12-19 04:28:56,747 INFO L78 Accepts]: Start accepts. Automaton has 186704 states and 198052 transitions. Word has length 695 [2023-12-19 04:28:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:28:56,747 INFO L495 AbstractCegarLoop]: Abstraction has 186704 states and 198052 transitions. [2023-12-19 04:28:56,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 04:28:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 186704 states and 198052 transitions. [2023-12-19 04:28:56,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-19 04:28:56,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:28:56,762 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:28:56,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:28:56,762 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:28:56,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:28:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -313656465, now seen corresponding path program 1 times [2023-12-19 04:28:56,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:28:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608173016] [2023-12-19 04:28:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:28:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:28:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:28:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2023-12-19 04:28:57,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:28:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608173016] [2023-12-19 04:28:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608173016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:28:57,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:28:57,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:28:57,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529080725] [2023-12-19 04:28:57,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:28:57,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:28:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:28:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:28:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:28:57,216 INFO L87 Difference]: Start difference. First operand 186704 states and 198052 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 04:28:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:28:58,777 INFO L93 Difference]: Finished difference Result 364453 states and 386548 transitions. [2023-12-19 04:28:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:28:58,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 705 [2023-12-19 04:28:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:28:58,992 INFO L225 Difference]: With dead ends: 364453 [2023-12-19 04:28:58,993 INFO L226 Difference]: Without dead ends: 178173 [2023-12-19 04:28:59,293 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 04:28:59,308 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 521 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:28:59,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 95 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 04:28:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178173 states. [2023-12-19 04:29:01,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178173 to 173056. [2023-12-19 04:29:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173056 states, 173055 states have (on average 1.0610152841582157) internal successors, (183614), 173055 states have internal predecessors, (183614), 0 states have call successors, (0), 0 states 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 04:29:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173056 states to 173056 states and 183614 transitions. [2023-12-19 04:29:01,410 INFO L78 Accepts]: Start accepts. Automaton has 173056 states and 183614 transitions. Word has length 705 [2023-12-19 04:29:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:01,411 INFO L495 AbstractCegarLoop]: Abstraction has 173056 states and 183614 transitions. [2023-12-19 04:29:01,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 04:29:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 173056 states and 183614 transitions. [2023-12-19 04:29:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-19 04:29:01,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:01,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-19 04:29:01,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 04:29:01,429 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:01,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1424316969, now seen corresponding path program 1 times [2023-12-19 04:29:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:01,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205520094] [2023-12-19 04:29:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 1013 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2023-12-19 04:29:01,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:01,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205520094] [2023-12-19 04:29:01,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205520094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:01,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:01,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:01,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367470083] [2023-12-19 04:29:01,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:01,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:01,946 INFO L87 Difference]: Start difference. First operand 173056 states and 183614 transitions. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 04:29:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:04,807 INFO L93 Difference]: Finished difference Result 349535 states and 370808 transitions. [2023-12-19 04:29:04,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:04,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 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 753 [2023-12-19 04:29:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:05,027 INFO L225 Difference]: With dead ends: 349535 [2023-12-19 04:29:05,027 INFO L226 Difference]: Without dead ends: 176905 [2023-12-19 04:29:05,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:05,112 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 851 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:05,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 204 Invalid, 2432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 04:29:05,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176905 states. [2023-12-19 04:29:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176905 to 170495. [2023-12-19 04:29:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170495 states, 170494 states have (on average 1.0609640221943295) internal successors, (180888), 170494 states have internal predecessors, (180888), 0 states have call successors, (0), 0 states 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 04:29:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170495 states to 170495 states and 180888 transitions. [2023-12-19 04:29:07,536 INFO L78 Accepts]: Start accepts. Automaton has 170495 states and 180888 transitions. Word has length 753 [2023-12-19 04:29:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:07,536 INFO L495 AbstractCegarLoop]: Abstraction has 170495 states and 180888 transitions. [2023-12-19 04:29:07,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 04:29:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 170495 states and 180888 transitions. [2023-12-19 04:29:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2023-12-19 04:29:07,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:07,559 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:07,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 04:29:07,560 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:07,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:07,560 INFO L85 PathProgramCache]: Analyzing trace with hash 117225092, now seen corresponding path program 1 times [2023-12-19 04:29:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:07,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215160366] [2023-12-19 04:29:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:07,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-19 04:29:08,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215160366] [2023-12-19 04:29:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215160366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:08,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:08,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243663147] [2023-12-19 04:29:08,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:08,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:08,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:08,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:08,474 INFO L87 Difference]: Start difference. First operand 170495 states and 180888 transitions. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 04:29:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:11,709 INFO L93 Difference]: Finished difference Result 372932 states and 395125 transitions. [2023-12-19 04:29:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 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 789 [2023-12-19 04:29:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:12,158 INFO L225 Difference]: With dead ends: 372932 [2023-12-19 04:29:12,158 INFO L226 Difference]: Without dead ends: 202438 [2023-12-19 04:29:12,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:12,235 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 740 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:12,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 205 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:29:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202438 states. [2023-12-19 04:29:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202438 to 187529. [2023-12-19 04:29:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187529 states, 187528 states have (on average 1.0597297470244444) internal successors, (198729), 187528 states have internal predecessors, (198729), 0 states have call successors, (0), 0 states 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 04:29:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187529 states to 187529 states and 198729 transitions. [2023-12-19 04:29:14,875 INFO L78 Accepts]: Start accepts. Automaton has 187529 states and 198729 transitions. Word has length 789 [2023-12-19 04:29:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:14,876 INFO L495 AbstractCegarLoop]: Abstraction has 187529 states and 198729 transitions. [2023-12-19 04:29:14,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 04:29:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 187529 states and 198729 transitions. [2023-12-19 04:29:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2023-12-19 04:29:14,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:14,903 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 04:29:14,903 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:14,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 865561131, now seen corresponding path program 1 times [2023-12-19 04:29:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290626271] [2023-12-19 04:29:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 963 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2023-12-19 04:29:15,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:15,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290626271] [2023-12-19 04:29:15,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290626271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:15,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:15,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:15,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625186994] [2023-12-19 04:29:15,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:15,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:15,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:15,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:15,152 INFO L87 Difference]: Start difference. First operand 187529 states and 198729 transitions. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 04:29:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:17,589 INFO L93 Difference]: Finished difference Result 380593 states and 403352 transitions. [2023-12-19 04:29:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:17,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 812 [2023-12-19 04:29:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:17,821 INFO L225 Difference]: With dead ends: 380593 [2023-12-19 04:29:17,821 INFO L226 Difference]: Without dead ends: 193490 [2023-12-19 04:29:17,893 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 04:29:17,894 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 446 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:17,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 180 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:18,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193490 states. [2023-12-19 04:29:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193490 to 181135. [2023-12-19 04:29:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181135 states, 181134 states have (on average 1.0572890788035376) internal successors, (191511), 181134 states have internal predecessors, (191511), 0 states have call successors, (0), 0 states 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 04:29:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181135 states to 181135 states and 191511 transitions. [2023-12-19 04:29:20,443 INFO L78 Accepts]: Start accepts. Automaton has 181135 states and 191511 transitions. Word has length 812 [2023-12-19 04:29:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:20,446 INFO L495 AbstractCegarLoop]: Abstraction has 181135 states and 191511 transitions. [2023-12-19 04:29:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 04:29:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 181135 states and 191511 transitions. [2023-12-19 04:29:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2023-12-19 04:29:20,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:20,474 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-19 04:29:20,474 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:20,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1062671715, now seen corresponding path program 1 times [2023-12-19 04:29:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:20,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168927152] [2023-12-19 04:29:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1467 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2023-12-19 04:29:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:21,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168927152] [2023-12-19 04:29:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168927152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:21,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:21,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:21,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203954100] [2023-12-19 04:29:21,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:21,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:21,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:21,116 INFO L87 Difference]: Start difference. First operand 181135 states and 191511 transitions. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 04:29:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:23,591 INFO L93 Difference]: Finished difference Result 374240 states and 395710 transitions. [2023-12-19 04:29:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 845 [2023-12-19 04:29:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:23,808 INFO L225 Difference]: With dead ends: 374240 [2023-12-19 04:29:23,808 INFO L226 Difference]: Without dead ends: 193531 [2023-12-19 04:29:23,880 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 04:29:23,880 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 316 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:23,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 282 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193531 states. [2023-12-19 04:29:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193531 to 182839. [2023-12-19 04:29:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182839 states, 182838 states have (on average 1.0574989881753245) internal successors, (193351), 182838 states have internal predecessors, (193351), 0 states have call successors, (0), 0 states 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 04:29:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182839 states to 182839 states and 193351 transitions. [2023-12-19 04:29:26,354 INFO L78 Accepts]: Start accepts. Automaton has 182839 states and 193351 transitions. Word has length 845 [2023-12-19 04:29:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:26,355 INFO L495 AbstractCegarLoop]: Abstraction has 182839 states and 193351 transitions. [2023-12-19 04:29:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 04:29:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 182839 states and 193351 transitions. [2023-12-19 04:29:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2023-12-19 04:29:26,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:26,389 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:26,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 04:29:26,390 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:26,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:26,390 INFO L85 PathProgramCache]: Analyzing trace with hash 347316666, now seen corresponding path program 1 times [2023-12-19 04:29:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:26,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746670033] [2023-12-19 04:29:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:26,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-12-19 04:29:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746670033] [2023-12-19 04:29:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746670033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:27,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:27,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:27,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331787434] [2023-12-19 04:29:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:27,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:27,178 INFO L87 Difference]: Start difference. First operand 182839 states and 193351 transitions. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states 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 04:29:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:29,755 INFO L93 Difference]: Finished difference Result 383610 states and 405365 transitions. [2023-12-19 04:29:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 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 910 [2023-12-19 04:29:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:30,246 INFO L225 Difference]: With dead ends: 383610 [2023-12-19 04:29:30,246 INFO L226 Difference]: Without dead ends: 201197 [2023-12-19 04:29:30,318 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 04:29:30,318 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 360 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:30,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 225 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:29:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201197 states. [2023-12-19 04:29:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201197 to 173454. [2023-12-19 04:29:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173454 states, 173453 states have (on average 1.0570529192346054) internal successors, (183349), 173453 states have internal predecessors, (183349), 0 states have call successors, (0), 0 states 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 04:29:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173454 states to 173454 states and 183349 transitions. [2023-12-19 04:29:32,585 INFO L78 Accepts]: Start accepts. Automaton has 173454 states and 183349 transitions. Word has length 910 [2023-12-19 04:29:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:32,586 INFO L495 AbstractCegarLoop]: Abstraction has 173454 states and 183349 transitions. [2023-12-19 04:29:32,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states 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 04:29:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 173454 states and 183349 transitions. [2023-12-19 04:29:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2023-12-19 04:29:32,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:32,865 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-19 04:29:32,866 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:32,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash 748479200, now seen corresponding path program 1 times [2023-12-19 04:29:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:32,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311622688] [2023-12-19 04:29:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 1125 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-12-19 04:29:33,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:33,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311622688] [2023-12-19 04:29:33,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311622688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:33,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:33,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:29:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368490402] [2023-12-19 04:29:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:33,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:29:33,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:29:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:33,484 INFO L87 Difference]: Start difference. First operand 173454 states and 183349 transitions. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 04:29:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:36,650 INFO L93 Difference]: Finished difference Result 379333 states and 400515 transitions. [2023-12-19 04:29:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:29:36,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 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 915 [2023-12-19 04:29:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:36,941 INFO L225 Difference]: With dead ends: 379333 [2023-12-19 04:29:36,941 INFO L226 Difference]: Without dead ends: 206305 [2023-12-19 04:29:37,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:29:37,038 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 686 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:37,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 608 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:29:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206305 states. [2023-12-19 04:29:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206305 to 173452. [2023-12-19 04:29:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173452 states, 173451 states have (on average 1.0569209747997994) internal successors, (183324), 173451 states have internal predecessors, (183324), 0 states have call successors, (0), 0 states 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 04:29:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173452 states to 173452 states and 183324 transitions. [2023-12-19 04:29:39,537 INFO L78 Accepts]: Start accepts. Automaton has 173452 states and 183324 transitions. Word has length 915 [2023-12-19 04:29:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:39,537 INFO L495 AbstractCegarLoop]: Abstraction has 173452 states and 183324 transitions. [2023-12-19 04:29:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 04:29:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 173452 states and 183324 transitions. [2023-12-19 04:29:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2023-12-19 04:29:39,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:39,576 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:29:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-19 04:29:39,577 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:39,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1963010742, now seen corresponding path program 1 times [2023-12-19 04:29:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600153607] [2023-12-19 04:29:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 1779 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-19 04:29:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600153607] [2023-12-19 04:29:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600153607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 04:29:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759628047] [2023-12-19 04:29:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 04:29:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 04:29:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:29:40,316 INFO L87 Difference]: Start difference. First operand 173452 states and 183324 transitions. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 04:29:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:45,176 INFO L93 Difference]: Finished difference Result 386942 states and 409138 transitions. [2023-12-19 04:29:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 04:29:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 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 939 [2023-12-19 04:29:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:45,658 INFO L225 Difference]: With dead ends: 386942 [2023-12-19 04:29:45,658 INFO L226 Difference]: Without dead ends: 213491 [2023-12-19 04:29:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:29:45,768 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1623 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 4314 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 4820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 4314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:45,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 217 Invalid, 4820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 4314 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 04:29:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213491 states. [2023-12-19 04:29:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213491 to 184945. [2023-12-19 04:29:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184945 states, 184944 states have (on average 1.056692836750584) internal successors, (195429), 184944 states have internal predecessors, (195429), 0 states have call successors, (0), 0 states 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 04:29:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184945 states to 184945 states and 195429 transitions. [2023-12-19 04:29:48,520 INFO L78 Accepts]: Start accepts. Automaton has 184945 states and 195429 transitions. Word has length 939 [2023-12-19 04:29:48,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:48,520 INFO L495 AbstractCegarLoop]: Abstraction has 184945 states and 195429 transitions. [2023-12-19 04:29:48,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 04:29:48,521 INFO L276 IsEmpty]: Start isEmpty. Operand 184945 states and 195429 transitions. [2023-12-19 04:29:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2023-12-19 04:29:48,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:48,567 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:48,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-19 04:29:48,567 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:48,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1575384193, now seen corresponding path program 1 times [2023-12-19 04:29:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:48,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616739199] [2023-12-19 04:29:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:48,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1432 trivial. 0 not checked. [2023-12-19 04:29:49,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616739199] [2023-12-19 04:29:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616739199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:49,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763770362] [2023-12-19 04:29:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:49,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:49,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:49,117 INFO L87 Difference]: Start difference. First operand 184945 states and 195429 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 04:29:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:51,453 INFO L93 Difference]: Finished difference Result 371167 states and 392157 transitions. [2023-12-19 04:29:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 983 [2023-12-19 04:29:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:51,701 INFO L225 Difference]: With dead ends: 371167 [2023-12-19 04:29:51,701 INFO L226 Difference]: Without dead ends: 186223 [2023-12-19 04:29:51,784 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 04:29:51,784 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 441 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:51,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 744 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:29:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186223 states. [2023-12-19 04:29:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186223 to 181540. [2023-12-19 04:29:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181540 states, 181539 states have (on average 1.0564672053938824) internal successors, (191790), 181539 states have internal predecessors, (191790), 0 states have call successors, (0), 0 states 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 04:29:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181540 states to 181540 states and 191790 transitions. [2023-12-19 04:29:54,302 INFO L78 Accepts]: Start accepts. Automaton has 181540 states and 191790 transitions. Word has length 983 [2023-12-19 04:29:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:54,303 INFO L495 AbstractCegarLoop]: Abstraction has 181540 states and 191790 transitions. [2023-12-19 04:29:54,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 04:29:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 181540 states and 191790 transitions. [2023-12-19 04:29:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2023-12-19 04:29:54,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:54,345 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:54,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-19 04:29:54,346 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:54,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1932336314, now seen corresponding path program 1 times [2023-12-19 04:29:54,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902931976] [2023-12-19 04:29:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-19 04:29:55,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:55,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902931976] [2023-12-19 04:29:55,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902931976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:55,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:55,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:55,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118576985] [2023-12-19 04:29:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:55,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:55,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:55,005 INFO L87 Difference]: Start difference. First operand 181540 states and 191790 transitions. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 04:29:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:57,472 INFO L93 Difference]: Finished difference Result 379730 states and 401227 transitions. [2023-12-19 04:29:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:57,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 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 997 [2023-12-19 04:29:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:57,766 INFO L225 Difference]: With dead ends: 379730 [2023-12-19 04:29:57,766 INFO L226 Difference]: Without dead ends: 198616 [2023-12-19 04:29:57,864 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 04:29:57,864 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 361 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:57,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 220 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198616 states. [2023-12-19 04:30:00,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198616 to 174303. [2023-12-19 04:30:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174303 states, 174302 states have (on average 1.0575552776215993) internal successors, (184334), 174302 states have internal predecessors, (184334), 0 states have call successors, (0), 0 states 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 04:30:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174303 states to 174303 states and 184334 transitions. [2023-12-19 04:30:00,365 INFO L78 Accepts]: Start accepts. Automaton has 174303 states and 184334 transitions. Word has length 997 [2023-12-19 04:30:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:00,366 INFO L495 AbstractCegarLoop]: Abstraction has 174303 states and 184334 transitions. [2023-12-19 04:30:00,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 04:30:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 174303 states and 184334 transitions. [2023-12-19 04:30:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2023-12-19 04:30:00,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:00,408 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:00,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-19 04:30:00,408 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1704446767, now seen corresponding path program 1 times [2023-12-19 04:30:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373528953] [2023-12-19 04:30:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2023-12-19 04:30:01,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:01,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373528953] [2023-12-19 04:30:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373528953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:01,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:30:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438093670] [2023-12-19 04:30:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:01,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:01,587 INFO L87 Difference]: Start difference. First operand 174303 states and 184334 transitions. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 04:30:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:05,004 INFO L93 Difference]: Finished difference Result 376767 states and 398118 transitions. [2023-12-19 04:30:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 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 1015 [2023-12-19 04:30:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:05,282 INFO L225 Difference]: With dead ends: 376767 [2023-12-19 04:30:05,283 INFO L226 Difference]: Without dead ends: 202890 [2023-12-19 04:30:05,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:05,373 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 732 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:05,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 647 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:30:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202890 states. [2023-12-19 04:30:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202890 to 162329. [2023-12-19 04:30:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162329 states, 162328 states have (on average 1.0537676802523286) internal successors, (171056), 162328 states have internal predecessors, (171056), 0 states have call successors, (0), 0 states 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 04:30:07,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162329 states to 162329 states and 171056 transitions. [2023-12-19 04:30:07,963 INFO L78 Accepts]: Start accepts. Automaton has 162329 states and 171056 transitions. Word has length 1015 [2023-12-19 04:30:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:07,963 INFO L495 AbstractCegarLoop]: Abstraction has 162329 states and 171056 transitions. [2023-12-19 04:30:07,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 04:30:07,964 INFO L276 IsEmpty]: Start isEmpty. Operand 162329 states and 171056 transitions. [2023-12-19 04:30:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2023-12-19 04:30:08,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:08,005 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:08,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-19 04:30:08,005 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:08,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:08,005 INFO L85 PathProgramCache]: Analyzing trace with hash 225136800, now seen corresponding path program 1 times [2023-12-19 04:30:08,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:08,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791461004] [2023-12-19 04:30:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:08,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 1637 proven. 289 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:30:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791461004] [2023-12-19 04:30:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791461004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:30:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916906907] [2023-12-19 04:30:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:09,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:30:09,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:30:09,027 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 04:30:09,027 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 04:30:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:09,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:30:09,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:30:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2171 backedges. 1400 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2023-12-19 04:30:14,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:30:14,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916906907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:14,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:30:14,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-19 04:30:14,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927668881] [2023-12-19 04:30:14,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:14,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:30:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:30:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:30:14,005 INFO L87 Difference]: Start difference. First operand 162329 states and 171056 transitions. Second operand has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 04:30:18,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:19,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:21,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:22,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:23,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:24,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:34,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:46,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:47,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:48,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-19 04:30:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:48,646 INFO L93 Difference]: Finished difference Result 363429 states and 383292 transitions. [2023-12-19 04:30:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 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 1026 [2023-12-19 04:30:48,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:48,945 INFO L225 Difference]: With dead ends: 363429 [2023-12-19 04:30:48,946 INFO L226 Difference]: Without dead ends: 201101 [2023-12-19 04:30:49,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:30:49,066 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 654 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 459 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 3787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:49,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 200 Invalid, 3787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 3302 Invalid, 26 Unknown, 0 Unchecked, 33.6s Time] [2023-12-19 04:30:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201101 states. [2023-12-19 04:30:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201101 to 170857. [2023-12-19 04:30:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170857 states, 170856 states have (on average 1.0543323032261085) internal successors, (180139), 170856 states have internal predecessors, (180139), 0 states have call successors, (0), 0 states 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 04:30:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170857 states to 170857 states and 180139 transitions. [2023-12-19 04:30:51,903 INFO L78 Accepts]: Start accepts. Automaton has 170857 states and 180139 transitions. Word has length 1026 [2023-12-19 04:30:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:51,903 INFO L495 AbstractCegarLoop]: Abstraction has 170857 states and 180139 transitions. [2023-12-19 04:30:51,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 04:30:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 170857 states and 180139 transitions. [2023-12-19 04:30:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2023-12-19 04:30:51,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:51,944 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:51,952 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 04:30:52,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:30:52,146 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:52,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash -218170035, now seen corresponding path program 1 times [2023-12-19 04:30:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527200705] [2023-12-19 04:30:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1957 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2023-12-19 04:30:52,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:52,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527200705] [2023-12-19 04:30:52,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527200705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:52,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:52,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:30:52,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301644625] [2023-12-19 04:30:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:52,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:52,875 INFO L87 Difference]: Start difference. First operand 170857 states and 180139 transitions. Second operand has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 04:30:55,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:55,864 INFO L93 Difference]: Finished difference Result 338693 states and 356273 transitions. [2023-12-19 04:30:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:55,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 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 1029 [2023-12-19 04:30:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:56,087 INFO L225 Difference]: With dead ends: 338693 [2023-12-19 04:30:56,087 INFO L226 Difference]: Without dead ends: 167837 [2023-12-19 04:30:56,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:56,187 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 742 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 129 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:30:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167837 states. [2023-12-19 04:30:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167837 to 131634. [2023-12-19 04:30:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131634 states, 131633 states have (on average 1.0467132102132444) internal successors, (137782), 131633 states have internal predecessors, (137782), 0 states have call successors, (0), 0 states 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 04:30:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131634 states to 131634 states and 137782 transitions. [2023-12-19 04:30:58,473 INFO L78 Accepts]: Start accepts. Automaton has 131634 states and 137782 transitions. Word has length 1029 [2023-12-19 04:30:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:58,473 INFO L495 AbstractCegarLoop]: Abstraction has 131634 states and 137782 transitions. [2023-12-19 04:30:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 04:30:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 131634 states and 137782 transitions. [2023-12-19 04:30:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2023-12-19 04:30:58,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:58,534 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:58,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-19 04:30:58,534 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:58,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1345830816, now seen corresponding path program 1 times [2023-12-19 04:30:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:58,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083769551] [2023-12-19 04:30:58,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:58,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 1440 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-12-19 04:30:59,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:59,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083769551] [2023-12-19 04:30:59,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083769551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:59,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:59,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253199022] [2023-12-19 04:30:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:59,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:59,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:59,455 INFO L87 Difference]: Start difference. First operand 131634 states and 137782 transitions. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 04:31:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:01,247 INFO L93 Difference]: Finished difference Result 263273 states and 275500 transitions. [2023-12-19 04:31:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:01,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 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 1071 [2023-12-19 04:31:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:01,440 INFO L225 Difference]: With dead ends: 263273 [2023-12-19 04:31:01,440 INFO L226 Difference]: Without dead ends: 132065 [2023-12-19 04:31:01,506 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 04:31:01,506 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 250 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:01,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 703 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:31:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132065 states.