/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:01:53,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:01:53,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:01:53,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:01:53,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:01:53,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:01:53,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:01:53,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:01:53,705 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:01:53,708 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:01:53,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:01:53,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:01:53,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:01:53,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:01:53,710 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:01:53,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:01:53,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:01:53,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:01:53,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:01:53,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:01:53,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:01:53,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:01:53,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:01:53,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:01:53,712 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:01:53,712 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:01:53,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:01:53,712 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:01:53,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:01:53,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:01:53,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:01:53,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:01:53,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:01:53,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:01:53,715 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:01:53,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:01:53,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:01:53,715 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:01:53,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:01:53,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:01:53,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:01:53,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:01:53,923 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:01:53,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2023-12-20 01:01:54,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:01:55,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:01:55,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2023-12-20 01:01:55,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43692494f/59606817ac7e42f9a6cf78485002906c/FLAGcd4b30d6b [2023-12-20 01:01:55,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43692494f/59606817ac7e42f9a6cf78485002906c [2023-12-20 01:01:55,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:01:55,154 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:01:55,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:01:55,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:01:55,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:01:55,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a615f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55, skipping insertion in model container [2023-12-20 01:01:55,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,202 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:01:55,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2023-12-20 01:01:55,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:01:55,357 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:01:55,390 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2023-12-20 01:01:55,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:01:55,414 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:01:55,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55 WrapperNode [2023-12-20 01:01:55,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:01:55,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:01:55,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:01:55,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:01:55,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,464 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 243 [2023-12-20 01:01:55,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:01:55,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:01:55,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:01:55,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:01:55,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,494 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:01:55,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,503 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:01:55,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:01:55,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:01:55,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:01:55,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (1/1) ... [2023-12-20 01:01:55,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:01:55,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:55,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:01:55,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:01:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:01:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:01:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:01:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:01:55,654 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:01:55,656 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:01:55,960 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:01:55,991 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:01:55,991 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:01:55,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:55 BoogieIcfgContainer [2023-12-20 01:01:55,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:01:55,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:01:55,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:01:55,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:01:55,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:01:55" (1/3) ... [2023-12-20 01:01:55,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0ee1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:55, skipping insertion in model container [2023-12-20 01:01:55,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:01:55" (2/3) ... [2023-12-20 01:01:55,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0ee1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:55, skipping insertion in model container [2023-12-20 01:01:55,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:55" (3/3) ... [2023-12-20 01:01:55,997 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2023-12-20 01:01:56,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:01:56,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:01:56,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:01:56,045 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;@79380e12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:01:56,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:01:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 63 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-20 01:01:56,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:56,054 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] [2023-12-20 01:01:56,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:56,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash 553341809, now seen corresponding path program 1 times [2023-12-20 01:01:56,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:56,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954710261] [2023-12-20 01:01:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:56,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954710261] [2023-12-20 01:01:56,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954710261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:56,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:56,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:56,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627716929] [2023-12-20 01:01:56,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:56,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:56,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:56,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:56,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:56,402 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 63 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:56,471 INFO L93 Difference]: Finished difference Result 108 states and 182 transitions. [2023-12-20 01:01:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:56,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-20 01:01:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:56,481 INFO L225 Difference]: With dead ends: 108 [2023-12-20 01:01:56,482 INFO L226 Difference]: Without dead ends: 62 [2023-12-20 01:01:56,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:56,486 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:56,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-20 01:01:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-20 01:01:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2023-12-20 01:01:56,516 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 22 [2023-12-20 01:01:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:56,516 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2023-12-20 01:01:56,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2023-12-20 01:01:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 01:01:56,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:56,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:56,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:01:56,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:56,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:56,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1178010663, now seen corresponding path program 1 times [2023-12-20 01:01:56,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:56,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711759819] [2023-12-20 01:01:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:56,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711759819] [2023-12-20 01:01:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711759819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:56,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:56,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:56,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171291347] [2023-12-20 01:01:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:56,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:56,579 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:56,602 INFO L93 Difference]: Finished difference Result 136 states and 205 transitions. [2023-12-20 01:01:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:56,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 01:01:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:56,605 INFO L225 Difference]: With dead ends: 136 [2023-12-20 01:01:56,605 INFO L226 Difference]: Without dead ends: 95 [2023-12-20 01:01:56,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:56,607 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 50 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:56,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 177 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-20 01:01:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-12-20 01:01:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 92 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2023-12-20 01:01:56,616 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 38 [2023-12-20 01:01:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:56,616 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2023-12-20 01:01:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,617 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2023-12-20 01:01:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 01:01:56,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:56,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:56,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:01:56,618 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:56,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2089214662, now seen corresponding path program 1 times [2023-12-20 01:01:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:56,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828756031] [2023-12-20 01:01:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828756031] [2023-12-20 01:01:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828756031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:56,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:56,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:56,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919789020] [2023-12-20 01:01:56,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:56,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:56,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:56,749 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:56,832 INFO L93 Difference]: Finished difference Result 381 states and 601 transitions. [2023-12-20 01:01:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:56,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-12-20 01:01:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:56,839 INFO L225 Difference]: With dead ends: 381 [2023-12-20 01:01:56,839 INFO L226 Difference]: Without dead ends: 309 [2023-12-20 01:01:56,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:56,843 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 389 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:56,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 356 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-20 01:01:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 163. [2023-12-20 01:01:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2023-12-20 01:01:56,858 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 38 [2023-12-20 01:01:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:56,858 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2023-12-20 01:01:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2023-12-20 01:01:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 01:01:56,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:56,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:56,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:01:56,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:56,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:56,860 INFO L85 PathProgramCache]: Analyzing trace with hash 328114147, now seen corresponding path program 1 times [2023-12-20 01:01:56,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:56,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409484235] [2023-12-20 01:01:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:56,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409484235] [2023-12-20 01:01:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409484235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:56,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:56,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950573600] [2023-12-20 01:01:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:56,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:56,979 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:56,999 INFO L93 Difference]: Finished difference Result 177 states and 265 transitions. [2023-12-20 01:01:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:57,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2023-12-20 01:01:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,001 INFO L225 Difference]: With dead ends: 177 [2023-12-20 01:01:57,001 INFO L226 Difference]: Without dead ends: 175 [2023-12-20 01:01:57,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:57,003 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 242 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-20 01:01:57,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2023-12-20 01:01:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.5058823529411764) internal successors, (256), 170 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 256 transitions. [2023-12-20 01:01:57,023 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 256 transitions. Word has length 39 [2023-12-20 01:01:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,024 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 256 transitions. [2023-12-20 01:01:57,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 256 transitions. [2023-12-20 01:01:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 01:01:57,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:01:57,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1582634382, now seen corresponding path program 1 times [2023-12-20 01:01:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947955767] [2023-12-20 01:01:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:57,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:57,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947955767] [2023-12-20 01:01:57,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947955767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:57,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:57,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053531473] [2023-12-20 01:01:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:57,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:57,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,065 INFO L87 Difference]: Start difference. First operand 171 states and 256 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:57,081 INFO L93 Difference]: Finished difference Result 443 states and 678 transitions. [2023-12-20 01:01:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-20 01:01:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,082 INFO L225 Difference]: With dead ends: 443 [2023-12-20 01:01:57,083 INFO L226 Difference]: Without dead ends: 293 [2023-12-20 01:01:57,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,084 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 141 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-20 01:01:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2023-12-20 01:01:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.5034965034965035) internal successors, (430), 286 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 430 transitions. [2023-12-20 01:01:57,095 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 430 transitions. Word has length 40 [2023-12-20 01:01:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,095 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 430 transitions. [2023-12-20 01:01:57,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 430 transitions. [2023-12-20 01:01:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 01:01:57,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:01:57,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1783001514, now seen corresponding path program 1 times [2023-12-20 01:01:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398967081] [2023-12-20 01:01:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:57,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:57,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398967081] [2023-12-20 01:01:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398967081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:57,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:57,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215347213] [2023-12-20 01:01:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:57,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:57,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,131 INFO L87 Difference]: Start difference. First operand 287 states and 430 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:57,160 INFO L93 Difference]: Finished difference Result 755 states and 1136 transitions. [2023-12-20 01:01:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:57,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 01:01:57,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,163 INFO L225 Difference]: With dead ends: 755 [2023-12-20 01:01:57,163 INFO L226 Difference]: Without dead ends: 489 [2023-12-20 01:01:57,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,167 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 46 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 175 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-20 01:01:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2023-12-20 01:01:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.477366255144033) internal successors, (718), 486 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) [2023-12-20 01:01:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 718 transitions. [2023-12-20 01:01:57,196 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 718 transitions. Word has length 41 [2023-12-20 01:01:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,198 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 718 transitions. [2023-12-20 01:01:57,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 718 transitions. [2023-12-20 01:01:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 01:01:57,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:57,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:01:57,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2069403532, now seen corresponding path program 1 times [2023-12-20 01:01:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489092148] [2023-12-20 01:01:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:57,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489092148] [2023-12-20 01:01:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489092148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:57,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:57,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972030593] [2023-12-20 01:01:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:57,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,261 INFO L87 Difference]: Start difference. First operand 487 states and 718 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:57,282 INFO L93 Difference]: Finished difference Result 942 states and 1404 transitions. [2023-12-20 01:01:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:57,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-20 01:01:57,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,285 INFO L225 Difference]: With dead ends: 942 [2023-12-20 01:01:57,285 INFO L226 Difference]: Without dead ends: 675 [2023-12-20 01:01:57,285 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 [2023-12-20 01:01:57,288 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 187 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-12-20 01:01:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2023-12-20 01:01:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.4642857142857142) internal successors, (984), 672 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 984 transitions. [2023-12-20 01:01:57,306 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 984 transitions. Word has length 42 [2023-12-20 01:01:57,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,307 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 984 transitions. [2023-12-20 01:01:57,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 984 transitions. [2023-12-20 01:01:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:01:57,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:01:57,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1411089419, now seen corresponding path program 1 times [2023-12-20 01:01:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634237963] [2023-12-20 01:01:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:01:57,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634237963] [2023-12-20 01:01:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634237963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:57,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:57,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428942355] [2023-12-20 01:01:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:57,422 INFO L87 Difference]: Start difference. First operand 673 states and 984 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:57,484 INFO L93 Difference]: Finished difference Result 1553 states and 2312 transitions. [2023-12-20 01:01:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 59 [2023-12-20 01:01:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,488 INFO L225 Difference]: With dead ends: 1553 [2023-12-20 01:01:57,488 INFO L226 Difference]: Without dead ends: 1223 [2023-12-20 01:01:57,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:57,489 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 231 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 387 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-12-20 01:01:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 993. [2023-12-20 01:01:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.467741935483871) internal successors, (1456), 992 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1456 transitions. [2023-12-20 01:01:57,514 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1456 transitions. Word has length 59 [2023-12-20 01:01:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,514 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1456 transitions. [2023-12-20 01:01:57,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1456 transitions. [2023-12-20 01:01:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:01:57,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:57,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:01:57,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,516 INFO L85 PathProgramCache]: Analyzing trace with hash 399794666, now seen corresponding path program 1 times [2023-12-20 01:01:57,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944054946] [2023-12-20 01:01:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:01:57,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:57,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944054946] [2023-12-20 01:01:57,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944054946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:57,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:57,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:01:57,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794179486] [2023-12-20 01:01:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:57,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:01:57,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:01:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:57,656 INFO L87 Difference]: Start difference. First operand 993 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:57,713 INFO L93 Difference]: Finished difference Result 1873 states and 2784 transitions. [2023-12-20 01:01:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:01:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 59 [2023-12-20 01:01:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,718 INFO L225 Difference]: With dead ends: 1873 [2023-12-20 01:01:57,719 INFO L226 Difference]: Without dead ends: 1543 [2023-12-20 01:01:57,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:01:57,722 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 238 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 359 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-20 01:01:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1313. [2023-12-20 01:01:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 1.4695121951219512) internal successors, (1928), 1312 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1928 transitions. [2023-12-20 01:01:57,752 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1928 transitions. Word has length 59 [2023-12-20 01:01:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,753 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 1928 transitions. [2023-12-20 01:01:57,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1928 transitions. [2023-12-20 01:01:57,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:01:57,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:01:57,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:01:57,754 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1593197684, now seen corresponding path program 1 times [2023-12-20 01:01:57,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53146479] [2023-12-20 01:01:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:57,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53146479] [2023-12-20 01:01:57,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53146479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:57,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:57,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:01:57,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357357168] [2023-12-20 01:01:57,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:57,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:01:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:01:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,817 INFO L87 Difference]: Start difference. First operand 1313 states and 1928 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:57,848 INFO L93 Difference]: Finished difference Result 2605 states and 3834 transitions. [2023-12-20 01:01:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:01:57,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-20 01:01:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:57,852 INFO L225 Difference]: With dead ends: 2605 [2023-12-20 01:01:57,852 INFO L226 Difference]: Without dead ends: 1315 [2023-12-20 01:01:57,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:01:57,853 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 42 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:57,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 175 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-12-20 01:01:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1313. [2023-12-20 01:01:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 1.451219512195122) internal successors, (1904), 1312 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1904 transitions. [2023-12-20 01:01:57,879 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1904 transitions. Word has length 60 [2023-12-20 01:01:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:57,879 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 1904 transitions. [2023-12-20 01:01:57,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:01:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1904 transitions. [2023-12-20 01:01:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 01:01:57,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:57,880 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:01:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:01:57,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:57,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -749647339, now seen corresponding path program 1 times [2023-12-20 01:01:57,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:57,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481867425] [2023-12-20 01:01:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:01:58,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481867425] [2023-12-20 01:01:58,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481867425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:01:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096004123] [2023-12-20 01:01:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:58,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:01:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:58,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:01:58,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:01:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:58,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 01:01:58,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:01:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:01:58,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:01:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:01:58,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096004123] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:01:58,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:01:58,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-12-20 01:01:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34306236] [2023-12-20 01:01:58,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:01:58,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 01:01:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 01:01:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-20 01:01:58,692 INFO L87 Difference]: Start difference. First operand 1313 states and 1904 transitions. Second operand has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:00,034 INFO L93 Difference]: Finished difference Result 8237 states and 11860 transitions. [2023-12-20 01:02:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 01:02:00,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 0 states have call successors, (0), 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 60 [2023-12-20 01:02:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:00,053 INFO L225 Difference]: With dead ends: 8237 [2023-12-20 01:02:00,053 INFO L226 Difference]: Without dead ends: 7339 [2023-12-20 01:02:00,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 01:02:00,058 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1665 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:00,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 1017 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:02:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2023-12-20 01:02:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 6233. [2023-12-20 01:02:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 6232 states have (on average 1.4178433889602053) internal successors, (8836), 6232 states have internal predecessors, (8836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 8836 transitions. [2023-12-20 01:02:00,254 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 8836 transitions. Word has length 60 [2023-12-20 01:02:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:00,255 INFO L495 AbstractCegarLoop]: Abstraction has 6233 states and 8836 transitions. [2023-12-20 01:02:00,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 8836 transitions. [2023-12-20 01:02:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:02:00,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:00,256 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:00,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 01:02:00,477 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,SelfDestructingSolverStorable10 [2023-12-20 01:02:00,478 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:00,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 241927816, now seen corresponding path program 1 times [2023-12-20 01:02:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896202090] [2023-12-20 01:02:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:00,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:02:00,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:00,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896202090] [2023-12-20 01:02:00,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896202090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:00,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:00,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:02:00,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766939544] [2023-12-20 01:02:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:00,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:02:00,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:02:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:02:00,531 INFO L87 Difference]: Start difference. First operand 6233 states and 8836 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:00,729 INFO L93 Difference]: Finished difference Result 10087 states and 14414 transitions. [2023-12-20 01:02:00,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:02:00,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 61 [2023-12-20 01:02:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:00,752 INFO L225 Difference]: With dead ends: 10087 [2023-12-20 01:02:00,752 INFO L226 Difference]: Without dead ends: 8875 [2023-12-20 01:02:00,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 01:02:00,755 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 225 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:00,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 401 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2023-12-20 01:02:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 7515. [2023-12-20 01:02:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7515 states, 7514 states have (on average 1.4154910833111525) internal successors, (10636), 7514 states have internal predecessors, (10636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7515 states to 7515 states and 10636 transitions. [2023-12-20 01:02:00,956 INFO L78 Accepts]: Start accepts. Automaton has 7515 states and 10636 transitions. Word has length 61 [2023-12-20 01:02:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:00,956 INFO L495 AbstractCegarLoop]: Abstraction has 7515 states and 10636 transitions. [2023-12-20 01:02:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7515 states and 10636 transitions. [2023-12-20 01:02:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 01:02:00,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:00,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:00,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:02:00,957 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:00,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1014919611, now seen corresponding path program 1 times [2023-12-20 01:02:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724270293] [2023-12-20 01:02:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:01,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:01,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724270293] [2023-12-20 01:02:01,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724270293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:01,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:01,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718956880] [2023-12-20 01:02:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:01,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:01,017 INFO L87 Difference]: Start difference. First operand 7515 states and 10636 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:01,115 INFO L93 Difference]: Finished difference Result 10612 states and 14938 transitions. [2023-12-20 01:02:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:01,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 01:02:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:01,136 INFO L225 Difference]: With dead ends: 10612 [2023-12-20 01:02:01,136 INFO L226 Difference]: Without dead ends: 3120 [2023-12-20 01:02:01,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:01,143 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 34 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:01,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 162 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2023-12-20 01:02:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3118. [2023-12-20 01:02:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 3117 states have (on average 1.3583573949310235) internal successors, (4234), 3117 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4234 transitions. [2023-12-20 01:02:01,227 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4234 transitions. Word has length 62 [2023-12-20 01:02:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:01,227 INFO L495 AbstractCegarLoop]: Abstraction has 3118 states and 4234 transitions. [2023-12-20 01:02:01,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4234 transitions. [2023-12-20 01:02:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:02:01,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:01,231 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:01,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:02:01,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:01,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash 914787371, now seen corresponding path program 1 times [2023-12-20 01:02:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962991880] [2023-12-20 01:02:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:01,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962991880] [2023-12-20 01:02:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962991880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490449181] [2023-12-20 01:02:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:01,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:01,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:01,493 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) [2023-12-20 01:02:01,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:02:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:01,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 01:02:01,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:02,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:04,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490449181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:04,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:04,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 36 [2023-12-20 01:02:04,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897687936] [2023-12-20 01:02:04,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 01:02:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 01:02:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 01:02:04,214 INFO L87 Difference]: Start difference. First operand 3118 states and 4234 transitions. Second operand has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:22,025 INFO L93 Difference]: Finished difference Result 61136 states and 82288 transitions. [2023-12-20 01:02:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2023-12-20 01:02:22,025 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:02:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:22,119 INFO L225 Difference]: With dead ends: 61136 [2023-12-20 01:02:22,120 INFO L226 Difference]: Without dead ends: 58043 [2023-12-20 01:02:22,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34974 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=13185, Invalid=62165, Unknown=0, NotChecked=0, Total=75350 [2023-12-20 01:02:22,140 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 5520 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5520 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:22,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5520 Valid, 2407 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 01:02:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58043 states. [2023-12-20 01:02:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58043 to 34036. [2023-12-20 01:02:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34036 states, 34035 states have (on average 1.3443807844865578) internal successors, (45756), 34035 states have internal predecessors, (45756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34036 states to 34036 states and 45756 transitions. [2023-12-20 01:02:23,476 INFO L78 Accepts]: Start accepts. Automaton has 34036 states and 45756 transitions. Word has length 64 [2023-12-20 01:02:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:23,477 INFO L495 AbstractCegarLoop]: Abstraction has 34036 states and 45756 transitions. [2023-12-20 01:02:23,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.888888888888889) internal successors, (176), 36 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 34036 states and 45756 transitions. [2023-12-20 01:02:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:02:23,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:23,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:23,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 01:02:23,683 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,SelfDestructingSolverStorable13 [2023-12-20 01:02:23,683 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:23,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1775311146, now seen corresponding path program 1 times [2023-12-20 01:02:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049222884] [2023-12-20 01:02:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:23,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049222884] [2023-12-20 01:02:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049222884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:23,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:23,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:23,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224276596] [2023-12-20 01:02:23,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:23,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:23,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:23,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:23,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:23,742 INFO L87 Difference]: Start difference. First operand 34036 states and 45756 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:24,259 INFO L93 Difference]: Finished difference Result 51961 states and 69754 transitions. [2023-12-20 01:02:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 01:02:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:24,283 INFO L225 Difference]: With dead ends: 51961 [2023-12-20 01:02:24,284 INFO L226 Difference]: Without dead ends: 21117 [2023-12-20 01:02:24,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:24,307 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:24,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21117 states. [2023-12-20 01:02:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21117 to 21115. [2023-12-20 01:02:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21115 states, 21114 states have (on average 1.3198825423889362) internal successors, (27868), 21114 states have internal predecessors, (27868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21115 states to 21115 states and 27868 transitions. [2023-12-20 01:02:24,892 INFO L78 Accepts]: Start accepts. Automaton has 21115 states and 27868 transitions. Word has length 64 [2023-12-20 01:02:24,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:24,893 INFO L495 AbstractCegarLoop]: Abstraction has 21115 states and 27868 transitions. [2023-12-20 01:02:24,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 21115 states and 27868 transitions. [2023-12-20 01:02:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:02:24,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:24,894 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:24,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:02:24,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:24,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1487582904, now seen corresponding path program 1 times [2023-12-20 01:02:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:24,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664835129] [2023-12-20 01:02:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664835129] [2023-12-20 01:02:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664835129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805812833] [2023-12-20 01:02:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:24,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:24,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:24,962 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) [2023-12-20 01:02:24,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:02:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:25,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:02:25,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:25,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:25,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805812833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:25,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 01:02:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471190898] [2023-12-20 01:02:25,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:25,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 01:02:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 01:02:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:02:25,252 INFO L87 Difference]: Start difference. First operand 21115 states and 27868 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:26,046 INFO L93 Difference]: Finished difference Result 36738 states and 48903 transitions. [2023-12-20 01:02:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:02:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:02:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:26,076 INFO L225 Difference]: With dead ends: 36738 [2023-12-20 01:02:26,076 INFO L226 Difference]: Without dead ends: 23140 [2023-12-20 01:02:26,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:02:26,095 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 305 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:26,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 348 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:02:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23140 states. [2023-12-20 01:02:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23140 to 22806. [2023-12-20 01:02:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22806 states, 22805 states have (on average 1.3169041876781407) internal successors, (30032), 22805 states have internal predecessors, (30032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22806 states to 22806 states and 30032 transitions. [2023-12-20 01:02:26,799 INFO L78 Accepts]: Start accepts. Automaton has 22806 states and 30032 transitions. Word has length 65 [2023-12-20 01:02:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:26,799 INFO L495 AbstractCegarLoop]: Abstraction has 22806 states and 30032 transitions. [2023-12-20 01:02:26,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 22806 states and 30032 transitions. [2023-12-20 01:02:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:02:26,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:26,804 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:26,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:27,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:27,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:27,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash 780730908, now seen corresponding path program 1 times [2023-12-20 01:02:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488363131] [2023-12-20 01:02:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:27,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:27,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488363131] [2023-12-20 01:02:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488363131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:27,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:27,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835320346] [2023-12-20 01:02:27,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:27,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:27,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:27,040 INFO L87 Difference]: Start difference. First operand 22806 states and 30032 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:27,777 INFO L93 Difference]: Finished difference Result 51623 states and 67756 transitions. [2023-12-20 01:02:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:02:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:27,813 INFO L225 Difference]: With dead ends: 51623 [2023-12-20 01:02:27,813 INFO L226 Difference]: Without dead ends: 30082 [2023-12-20 01:02:27,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:27,826 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 38 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:27,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 177 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2023-12-20 01:02:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 25909. [2023-12-20 01:02:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25909 states, 25908 states have (on average 1.2926895167515826) internal successors, (33491), 25908 states have internal predecessors, (33491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25909 states to 25909 states and 33491 transitions. [2023-12-20 01:02:28,631 INFO L78 Accepts]: Start accepts. Automaton has 25909 states and 33491 transitions. Word has length 65 [2023-12-20 01:02:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:28,632 INFO L495 AbstractCegarLoop]: Abstraction has 25909 states and 33491 transitions. [2023-12-20 01:02:28,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 25909 states and 33491 transitions. [2023-12-20 01:02:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:02:28,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:28,633 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:28,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:02:28,633 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:28,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash 327884376, now seen corresponding path program 1 times [2023-12-20 01:02:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:28,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202855573] [2023-12-20 01:02:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:28,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202855573] [2023-12-20 01:02:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202855573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:28,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:28,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873030714] [2023-12-20 01:02:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:28,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:28,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:28,657 INFO L87 Difference]: Start difference. First operand 25909 states and 33491 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:29,704 INFO L93 Difference]: Finished difference Result 63440 states and 81653 transitions. [2023-12-20 01:02:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:02:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:29,741 INFO L225 Difference]: With dead ends: 63440 [2023-12-20 01:02:29,741 INFO L226 Difference]: Without dead ends: 37816 [2023-12-20 01:02:29,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:29,754 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 37 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:29,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37816 states. [2023-12-20 01:02:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37816 to 32252. [2023-12-20 01:02:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32252 states, 32251 states have (on average 1.2744100958109825) internal successors, (41101), 32251 states have internal predecessors, (41101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32252 states to 32252 states and 41101 transitions. [2023-12-20 01:02:31,077 INFO L78 Accepts]: Start accepts. Automaton has 32252 states and 41101 transitions. Word has length 65 [2023-12-20 01:02:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:31,078 INFO L495 AbstractCegarLoop]: Abstraction has 32252 states and 41101 transitions. [2023-12-20 01:02:31,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 32252 states and 41101 transitions. [2023-12-20 01:02:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:02:31,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:31,081 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:31,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:02:31,081 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:31,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1651643457, now seen corresponding path program 1 times [2023-12-20 01:02:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:31,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940142113] [2023-12-20 01:02:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:31,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:31,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:31,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940142113] [2023-12-20 01:02:31,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940142113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:02:31,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:02:31,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:02:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109424959] [2023-12-20 01:02:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:02:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:02:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:02:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:31,122 INFO L87 Difference]: Start difference. First operand 32252 states and 41101 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:31,878 INFO L93 Difference]: Finished difference Result 42388 states and 53799 transitions. [2023-12-20 01:02:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:02:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 01:02:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:31,904 INFO L225 Difference]: With dead ends: 42388 [2023-12-20 01:02:31,904 INFO L226 Difference]: Without dead ends: 26497 [2023-12-20 01:02:31,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:02:31,912 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 35 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:31,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 201 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:02:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26497 states. [2023-12-20 01:02:32,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26497 to 22849. [2023-12-20 01:02:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22849 states, 22848 states have (on average 1.248030462184874) internal successors, (28515), 22848 states have internal predecessors, (28515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22849 states to 22849 states and 28515 transitions. [2023-12-20 01:02:32,730 INFO L78 Accepts]: Start accepts. Automaton has 22849 states and 28515 transitions. Word has length 66 [2023-12-20 01:02:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:32,730 INFO L495 AbstractCegarLoop]: Abstraction has 22849 states and 28515 transitions. [2023-12-20 01:02:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:02:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22849 states and 28515 transitions. [2023-12-20 01:02:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:02:32,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:32,732 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:02:32,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:02:32,732 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:32,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 20597721, now seen corresponding path program 1 times [2023-12-20 01:02:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124796483] [2023-12-20 01:02:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:33,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:33,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124796483] [2023-12-20 01:02:33,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124796483] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:33,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531033306] [2023-12-20 01:02:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:33,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:33,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:33,737 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) [2023-12-20 01:02:33,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:02:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:33,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:02:33,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:34,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:02:36,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531033306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:36,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 40 [2023-12-20 01:02:36,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211428297] [2023-12-20 01:02:36,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:36,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 01:02:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:36,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 01:02:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1506, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 01:02:36,335 INFO L87 Difference]: Start difference. First operand 22849 states and 28515 transitions. Second operand has 41 states, 41 states have (on average 4.512195121951219) internal successors, (185), 40 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:42,819 INFO L93 Difference]: Finished difference Result 130608 states and 162230 transitions. [2023-12-20 01:03:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 619 states. [2023-12-20 01:03:42,820 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.512195121951219) internal successors, (185), 40 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 01:03:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:42,960 INFO L225 Difference]: With dead ends: 130608 [2023-12-20 01:03:42,960 INFO L226 Difference]: Without dead ends: 106748 [2023-12-20 01:03:43,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 651 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192442 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=41195, Invalid=384561, Unknown=0, NotChecked=0, Total=425756 [2023-12-20 01:03:43,021 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 8266 mSDsluCounter, 7691 mSDsCounter, 0 mSdLazyCounter, 9857 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8266 SdHoareTripleChecker+Valid, 8002 SdHoareTripleChecker+Invalid, 10260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 9857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:43,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8266 Valid, 8002 Invalid, 10260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [403 Valid, 9857 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-20 01:03:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106748 states. [2023-12-20 01:03:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106748 to 45985. [2023-12-20 01:03:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45985 states, 45984 states have (on average 1.2471729297146834) internal successors, (57350), 45984 states have internal predecessors, (57350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45985 states to 45985 states and 57350 transitions. [2023-12-20 01:03:45,521 INFO L78 Accepts]: Start accepts. Automaton has 45985 states and 57350 transitions. Word has length 66 [2023-12-20 01:03:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:45,521 INFO L495 AbstractCegarLoop]: Abstraction has 45985 states and 57350 transitions. [2023-12-20 01:03:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.512195121951219) internal successors, (185), 40 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 45985 states and 57350 transitions. [2023-12-20 01:03:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:03:45,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:45,523 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:03:45,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 01:03:45,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:45,733 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:45,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2051553057, now seen corresponding path program 1 times [2023-12-20 01:03:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101004069] [2023-12-20 01:03:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:45,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101004069] [2023-12-20 01:03:45,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101004069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:45,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573271020] [2023-12-20 01:03:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:45,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:45,867 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) [2023-12-20 01:03:45,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 01:03:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:45,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:03:45,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:46,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:46,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573271020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:46,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-20 01:03:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933437242] [2023-12-20 01:03:46,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:46,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-20 01:03:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-20 01:03:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-20 01:03:46,268 INFO L87 Difference]: Start difference. First operand 45985 states and 57350 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:48,321 INFO L93 Difference]: Finished difference Result 53261 states and 66201 transitions. [2023-12-20 01:03:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 01:03:48,322 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 01:03:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:48,370 INFO L225 Difference]: With dead ends: 53261 [2023-12-20 01:03:48,370 INFO L226 Difference]: Without dead ends: 46056 [2023-12-20 01:03:48,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-20 01:03:48,379 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 393 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:48,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 288 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:03:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46056 states. [2023-12-20 01:03:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46056 to 42198. [2023-12-20 01:03:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42198 states, 42197 states have (on average 1.2465815105339242) internal successors, (52602), 42197 states have internal predecessors, (52602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42198 states to 42198 states and 52602 transitions. [2023-12-20 01:03:50,221 INFO L78 Accepts]: Start accepts. Automaton has 42198 states and 52602 transitions. Word has length 66 [2023-12-20 01:03:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:50,221 INFO L495 AbstractCegarLoop]: Abstraction has 42198 states and 52602 transitions. [2023-12-20 01:03:50,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 42198 states and 52602 transitions. [2023-12-20 01:03:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 01:03:50,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:50,229 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:50,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:50,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:50,435 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:50,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash -601415119, now seen corresponding path program 1 times [2023-12-20 01:03:50,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:50,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717874304] [2023-12-20 01:03:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:03:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717874304] [2023-12-20 01:03:50,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717874304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:50,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:50,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011188145] [2023-12-20 01:03:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:50,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:50,478 INFO L87 Difference]: Start difference. First operand 42198 states and 52602 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:52,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:52,418 INFO L93 Difference]: Finished difference Result 88152 states and 109749 transitions. [2023-12-20 01:03:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:52,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 01:03:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:52,472 INFO L225 Difference]: With dead ends: 88152 [2023-12-20 01:03:52,472 INFO L226 Difference]: Without dead ends: 47048 [2023-12-20 01:03:52,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:52,493 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 27 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:52,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 209 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47048 states. [2023-12-20 01:03:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47048 to 30611. [2023-12-20 01:03:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30611 states, 30610 states have (on average 1.2138843515191113) internal successors, (37157), 30610 states have internal predecessors, (37157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30611 states to 30611 states and 37157 transitions. [2023-12-20 01:03:54,148 INFO L78 Accepts]: Start accepts. Automaton has 30611 states and 37157 transitions. Word has length 106 [2023-12-20 01:03:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:54,148 INFO L495 AbstractCegarLoop]: Abstraction has 30611 states and 37157 transitions. [2023-12-20 01:03:54,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 30611 states and 37157 transitions. [2023-12-20 01:03:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:03:54,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:54,156 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:03:54,156 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:54,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1466415916, now seen corresponding path program 1 times [2023-12-20 01:03:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:54,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996116220] [2023-12-20 01:03:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:54,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:54,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996116220] [2023-12-20 01:03:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996116220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:54,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170938414] [2023-12-20 01:03:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:54,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:54,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:54,771 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) [2023-12-20 01:03:54,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 01:03:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:54,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:03:54,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:55,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:57,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170938414] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:57,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:57,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2023-12-20 01:03:57,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745292396] [2023-12-20 01:03:57,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 01:03:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 01:03:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1575, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 01:03:57,164 INFO L87 Difference]: Start difference. First operand 30611 states and 37157 transitions. Second operand has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:09,718 INFO L93 Difference]: Finished difference Result 91268 states and 110311 transitions. [2023-12-20 01:04:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-20 01:04:09,718 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 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 107 [2023-12-20 01:04:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:09,788 INFO L225 Difference]: With dead ends: 91268 [2023-12-20 01:04:09,788 INFO L226 Difference]: Without dead ends: 72314 [2023-12-20 01:04:09,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7640 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3382, Invalid=19268, Unknown=0, NotChecked=0, Total=22650 [2023-12-20 01:04:09,799 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 3146 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 4554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:09,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 4293 Invalid, 4554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 01:04:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72314 states. [2023-12-20 01:04:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72314 to 40290. [2023-12-20 01:04:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40290 states, 40289 states have (on average 1.2169078408498597) internal successors, (49028), 40289 states have internal predecessors, (49028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40290 states to 40290 states and 49028 transitions. [2023-12-20 01:04:12,512 INFO L78 Accepts]: Start accepts. Automaton has 40290 states and 49028 transitions. Word has length 107 [2023-12-20 01:04:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:12,513 INFO L495 AbstractCegarLoop]: Abstraction has 40290 states and 49028 transitions. [2023-12-20 01:04:12,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.119047619047619) internal successors, (299), 42 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 40290 states and 49028 transitions. [2023-12-20 01:04:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-20 01:04:12,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:12,519 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:12,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 01:04:12,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:12,724 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:12,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1688010028, now seen corresponding path program 1 times [2023-12-20 01:04:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:12,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977188484] [2023-12-20 01:04:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-20 01:04:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977188484] [2023-12-20 01:04:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977188484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339323708] [2023-12-20 01:04:12,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:12,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:12,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:12,779 INFO L87 Difference]: Start difference. First operand 40290 states and 49028 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:14,327 INFO L93 Difference]: Finished difference Result 47513 states and 57619 transitions. [2023-12-20 01:04:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 107 [2023-12-20 01:04:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:14,356 INFO L225 Difference]: With dead ends: 47513 [2023-12-20 01:04:14,356 INFO L226 Difference]: Without dead ends: 27971 [2023-12-20 01:04:14,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:14,370 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 24 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:14,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 180 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27971 states. [2023-12-20 01:04:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27971 to 26598. [2023-12-20 01:04:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26598 states, 26597 states have (on average 1.1901718238899124) internal successors, (31655), 26597 states have internal predecessors, (31655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26598 states to 26598 states and 31655 transitions. [2023-12-20 01:04:16,133 INFO L78 Accepts]: Start accepts. Automaton has 26598 states and 31655 transitions. Word has length 107 [2023-12-20 01:04:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:16,134 INFO L495 AbstractCegarLoop]: Abstraction has 26598 states and 31655 transitions. [2023-12-20 01:04:16,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 26598 states and 31655 transitions. [2023-12-20 01:04:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:04:16,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:16,139 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:04:16,139 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:16,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash -684104513, now seen corresponding path program 1 times [2023-12-20 01:04:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153415187] [2023-12-20 01:04:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153415187] [2023-12-20 01:04:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153415187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534983970] [2023-12-20 01:04:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:16,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:16,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:16,695 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:16,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 01:04:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:16,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:04:16,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:17,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534983970] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:19,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2023-12-20 01:04:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600051361] [2023-12-20 01:04:19,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:19,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 01:04:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 01:04:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2023-12-20 01:04:19,193 INFO L87 Difference]: Start difference. First operand 26598 states and 31655 transitions. Second operand has 31 states, 31 states have (on average 8.483870967741936) internal successors, (263), 30 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:25,371 INFO L93 Difference]: Finished difference Result 91145 states and 108172 transitions. [2023-12-20 01:04:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-20 01:04:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.483870967741936) internal successors, (263), 30 states have internal predecessors, (263), 0 states have call successors, (0), 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 108 [2023-12-20 01:04:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:25,450 INFO L225 Difference]: With dead ends: 91145 [2023-12-20 01:04:25,450 INFO L226 Difference]: Without dead ends: 74590 [2023-12-20 01:04:25,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1653, Invalid=6179, Unknown=0, NotChecked=0, Total=7832 [2023-12-20 01:04:25,462 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1986 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:25,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 1249 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:04:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74590 states. [2023-12-20 01:04:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74590 to 31238. [2023-12-20 01:04:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31238 states, 31237 states have (on average 1.1832442295995134) internal successors, (36961), 31237 states have internal predecessors, (36961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31238 states to 31238 states and 36961 transitions. [2023-12-20 01:04:27,561 INFO L78 Accepts]: Start accepts. Automaton has 31238 states and 36961 transitions. Word has length 108 [2023-12-20 01:04:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:27,561 INFO L495 AbstractCegarLoop]: Abstraction has 31238 states and 36961 transitions. [2023-12-20 01:04:27,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.483870967741936) internal successors, (263), 30 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 31238 states and 36961 transitions. [2023-12-20 01:04:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:04:27,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:27,566 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:04:27,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 01:04:27,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:27,768 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:27,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 579184617, now seen corresponding path program 1 times [2023-12-20 01:04:27,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:27,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274491456] [2023-12-20 01:04:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:27,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:04:27,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274491456] [2023-12-20 01:04:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274491456] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:27,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395083785] [2023-12-20 01:04:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:27,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:27,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:27,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:27,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 01:04:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:27,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 01:04:27,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:04:28,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 45 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:04:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395083785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:28,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-20 01:04:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107585386] [2023-12-20 01:04:28,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 01:04:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 01:04:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-20 01:04:28,259 INFO L87 Difference]: Start difference. First operand 31238 states and 36961 transitions. Second operand has 14 states, 14 states have (on average 19.714285714285715) internal successors, (276), 14 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:30,313 INFO L93 Difference]: Finished difference Result 39101 states and 46269 transitions. [2023-12-20 01:04:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 01:04:30,313 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.714285714285715) internal successors, (276), 14 states have internal predecessors, (276), 0 states have call successors, (0), 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 108 [2023-12-20 01:04:30,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:30,346 INFO L225 Difference]: With dead ends: 39101 [2023-12-20 01:04:30,346 INFO L226 Difference]: Without dead ends: 30616 [2023-12-20 01:04:30,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2023-12-20 01:04:30,355 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 344 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:30,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 329 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:04:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30616 states. [2023-12-20 01:04:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30616 to 30015. [2023-12-20 01:04:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30015 states, 30014 states have (on average 1.182814686479643) internal successors, (35501), 30014 states have internal predecessors, (35501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30015 states to 30015 states and 35501 transitions. [2023-12-20 01:04:32,498 INFO L78 Accepts]: Start accepts. Automaton has 30015 states and 35501 transitions. Word has length 108 [2023-12-20 01:04:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:32,498 INFO L495 AbstractCegarLoop]: Abstraction has 30015 states and 35501 transitions. [2023-12-20 01:04:32,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.714285714285715) internal successors, (276), 14 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 30015 states and 35501 transitions. [2023-12-20 01:04:32,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:04:32,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:32,503 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:32,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 01:04:32,708 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:32,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1471799381, now seen corresponding path program 1 times [2023-12-20 01:04:32,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:32,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085061466] [2023-12-20 01:04:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085061466] [2023-12-20 01:04:33,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085061466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:33,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917937346] [2023-12-20 01:04:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:33,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:33,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:33,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 01:04:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:33,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 01:04:33,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:33,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917937346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:35,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2023-12-20 01:04:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39982406] [2023-12-20 01:04:35,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:04:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:04:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:04:35,493 INFO L87 Difference]: Start difference. First operand 30015 states and 35501 transitions. Second operand has 39 states, 39 states have (on average 7.435897435897436) internal successors, (290), 39 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:42,651 INFO L93 Difference]: Finished difference Result 67723 states and 79683 transitions. [2023-12-20 01:04:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-20 01:04:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.435897435897436) internal successors, (290), 39 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-20 01:04:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:42,709 INFO L225 Difference]: With dead ends: 67723 [2023-12-20 01:04:42,710 INFO L226 Difference]: Without dead ends: 51988 [2023-12-20 01:04:42,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2269, Invalid=9503, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 01:04:42,724 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2187 mSDsluCounter, 3949 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:42,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 4145 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3511 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 01:04:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51988 states. [2023-12-20 01:04:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51988 to 31444. [2023-12-20 01:04:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31444 states, 31443 states have (on average 1.1804853226473302) internal successors, (37118), 31443 states have internal predecessors, (37118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31444 states to 31444 states and 37118 transitions. [2023-12-20 01:04:45,098 INFO L78 Accepts]: Start accepts. Automaton has 31444 states and 37118 transitions. Word has length 108 [2023-12-20 01:04:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:45,098 INFO L495 AbstractCegarLoop]: Abstraction has 31444 states and 37118 transitions. [2023-12-20 01:04:45,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.435897435897436) internal successors, (290), 39 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 31444 states and 37118 transitions. [2023-12-20 01:04:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 01:04:45,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:45,103 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:45,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 01:04:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 01:04:45,308 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:45,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1394713623, now seen corresponding path program 1 times [2023-12-20 01:04:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048041905] [2023-12-20 01:04:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048041905] [2023-12-20 01:04:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048041905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315813725] [2023-12-20 01:04:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:46,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:46,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:46,298 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:46,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 01:04:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:46,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 01:04:46,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 21 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:47,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315813725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:48,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 14] total 42 [2023-12-20 01:04:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942332104] [2023-12-20 01:04:48,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-20 01:04:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-20 01:04:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1571, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 01:04:48,646 INFO L87 Difference]: Start difference. First operand 31444 states and 37118 transitions. Second operand has 42 states, 42 states have (on average 7.0476190476190474) internal successors, (296), 42 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:38,792 INFO L93 Difference]: Finished difference Result 115614 states and 135837 transitions. [2023-12-20 01:05:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 435 states. [2023-12-20 01:05:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.0476190476190474) internal successors, (296), 42 states have internal predecessors, (296), 0 states have call successors, (0), 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 108 [2023-12-20 01:05:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:38,888 INFO L225 Difference]: With dead ends: 115614 [2023-12-20 01:05:38,889 INFO L226 Difference]: Without dead ends: 97871 [2023-12-20 01:05:38,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99212 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=29127, Invalid=188495, Unknown=0, NotChecked=0, Total=217622 [2023-12-20 01:05:38,912 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 6627 mSDsluCounter, 6486 mSDsCounter, 0 mSdLazyCounter, 5984 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 6686 SdHoareTripleChecker+Invalid, 6341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 5984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:38,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6627 Valid, 6686 Invalid, 6341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 5984 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 01:05:38,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97871 states. [2023-12-20 01:05:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97871 to 71292. [2023-12-20 01:05:44,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71292 states, 71291 states have (on average 1.1846095580087248) internal successors, (84452), 71291 states have internal predecessors, (84452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71292 states to 71292 states and 84452 transitions. [2023-12-20 01:05:44,855 INFO L78 Accepts]: Start accepts. Automaton has 71292 states and 84452 transitions. Word has length 108 [2023-12-20 01:05:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:44,855 INFO L495 AbstractCegarLoop]: Abstraction has 71292 states and 84452 transitions. [2023-12-20 01:05:44,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.0476190476190474) internal successors, (296), 42 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 71292 states and 84452 transitions. [2023-12-20 01:05:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 01:05:44,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:44,860 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:44,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 01:05:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 01:05:45,158 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:45,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:45,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1884159022, now seen corresponding path program 1 times [2023-12-20 01:05:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273270965] [2023-12-20 01:05:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 01:05:45,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273270965] [2023-12-20 01:05:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273270965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679741631] [2023-12-20 01:05:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:45,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:45,184 INFO L87 Difference]: Start difference. First operand 71292 states and 84452 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:48,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:48,549 INFO L93 Difference]: Finished difference Result 84940 states and 100369 transitions. [2023-12-20 01:05:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:05:48,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-20 01:05:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:48,598 INFO L225 Difference]: With dead ends: 84940 [2023-12-20 01:05:48,598 INFO L226 Difference]: Without dead ends: 47239 [2023-12-20 01:05:48,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:48,610 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:48,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 166 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:05:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47239 states. [2023-12-20 01:05:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47239 to 45783. [2023-12-20 01:05:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45783 states, 45782 states have (on average 1.1701760517233848) internal successors, (53573), 45782 states have internal predecessors, (53573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45783 states to 45783 states and 53573 transitions. [2023-12-20 01:05:52,200 INFO L78 Accepts]: Start accepts. Automaton has 45783 states and 53573 transitions. Word has length 109 [2023-12-20 01:05:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:52,200 INFO L495 AbstractCegarLoop]: Abstraction has 45783 states and 53573 transitions. [2023-12-20 01:05:52,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 45783 states and 53573 transitions. [2023-12-20 01:05:52,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 01:05:52,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:52,206 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 01:05:52,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 01:05:52,206 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:52,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash 558931820, now seen corresponding path program 1 times [2023-12-20 01:05:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:52,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633659043] [2023-12-20 01:05:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:05:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633659043] [2023-12-20 01:05:52,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633659043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:05:52,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510446038] [2023-12-20 01:05:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:52,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:05:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:05:52,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:05:52,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 01:05:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:52,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:05:52,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:05:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:53,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:05:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:05:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510446038] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:05:55,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:05:55,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 38 [2023-12-20 01:05:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810764041] [2023-12-20 01:05:55,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:05:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:05:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:05:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:05:55,225 INFO L87 Difference]: Start difference. First operand 45783 states and 53573 transitions. Second operand has 39 states, 39 states have (on average 7.641025641025641) internal successors, (298), 38 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:02,773 INFO L93 Difference]: Finished difference Result 88201 states and 103263 transitions. [2023-12-20 01:06:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-20 01:06:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.641025641025641) internal successors, (298), 38 states have internal predecessors, (298), 0 states have call successors, (0), 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 109 [2023-12-20 01:06:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:02,835 INFO L225 Difference]: With dead ends: 88201 [2023-12-20 01:06:02,835 INFO L226 Difference]: Without dead ends: 59205 [2023-12-20 01:06:02,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3377 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2094, Invalid=8412, Unknown=0, NotChecked=0, Total=10506 [2023-12-20 01:06:02,847 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 1991 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:02,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1991 Valid, 1952 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 01:06:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59205 states. [2023-12-20 01:06:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59205 to 35736. [2023-12-20 01:06:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35736 states, 35735 states have (on average 1.1666713306282357) internal successors, (41691), 35735 states have internal predecessors, (41691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35736 states to 35736 states and 41691 transitions. [2023-12-20 01:06:05,877 INFO L78 Accepts]: Start accepts. Automaton has 35736 states and 41691 transitions. Word has length 109 [2023-12-20 01:06:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:05,877 INFO L495 AbstractCegarLoop]: Abstraction has 35736 states and 41691 transitions. [2023-12-20 01:06:05,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.641025641025641) internal successors, (298), 38 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 35736 states and 41691 transitions. [2023-12-20 01:06:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-20 01:06:05,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:05,881 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:05,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 01:06:06,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:06,086 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:06,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1310198646, now seen corresponding path program 1 times [2023-12-20 01:06:06,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:06,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945542882] [2023-12-20 01:06:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:06,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:06:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945542882] [2023-12-20 01:06:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945542882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390347897] [2023-12-20 01:06:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:06,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:06:06,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 01:06:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:06,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 01:06:06,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 01:06:07,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:06:07,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390347897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:07,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 36 [2023-12-20 01:06:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956912975] [2023-12-20 01:06:07,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-20 01:06:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-20 01:06:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 01:06:07,919 INFO L87 Difference]: Start difference. First operand 35736 states and 41691 transitions. Second operand has 37 states, 37 states have (on average 6.54054054054054) internal successors, (242), 36 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:06:23,436 INFO L93 Difference]: Finished difference Result 140421 states and 164551 transitions. [2023-12-20 01:06:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-20 01:06:23,437 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.54054054054054) internal successors, (242), 36 states have internal predecessors, (242), 0 states have call successors, (0), 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 109 [2023-12-20 01:06:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:06:23,575 INFO L225 Difference]: With dead ends: 140421 [2023-12-20 01:06:23,575 INFO L226 Difference]: Without dead ends: 132114 [2023-12-20 01:06:23,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6925 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3115, Invalid=15791, Unknown=0, NotChecked=0, Total=18906 [2023-12-20 01:06:23,591 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 3712 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3712 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:06:23,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3712 Valid, 3166 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 01:06:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132114 states. [2023-12-20 01:06:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132114 to 34716. [2023-12-20 01:06:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34716 states, 34715 states have (on average 1.1669883335733833) internal successors, (40512), 34715 states have internal predecessors, (40512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34716 states to 34716 states and 40512 transitions. [2023-12-20 01:06:27,085 INFO L78 Accepts]: Start accepts. Automaton has 34716 states and 40512 transitions. Word has length 109 [2023-12-20 01:06:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:06:27,085 INFO L495 AbstractCegarLoop]: Abstraction has 34716 states and 40512 transitions. [2023-12-20 01:06:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.54054054054054) internal successors, (242), 36 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:06:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 34716 states and 40512 transitions. [2023-12-20 01:06:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-20 01:06:27,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:06:27,088 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:06:27,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 01:06:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:27,294 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:06:27,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:06:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash -67407121, now seen corresponding path program 1 times [2023-12-20 01:06:27,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:06:27,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466507651] [2023-12-20 01:06:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:27,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:06:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:28,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:06:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466507651] [2023-12-20 01:06:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466507651] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:06:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95139296] [2023-12-20 01:06:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:06:28,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:06:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:06:28,237 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:06:28,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 01:06:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:06:28,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 01:06:28,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:06:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:31,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:06:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:06:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95139296] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:06:36,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:06:36,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 25] total 68 [2023-12-20 01:06:36,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015792456] [2023-12-20 01:06:36,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:06:36,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 01:06:36,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:06:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 01:06:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 01:06:36,142 INFO L87 Difference]: Start difference. First operand 34716 states and 40512 transitions. Second operand has 68 states, 68 states have (on average 4.661764705882353) internal successors, (317), 68 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:11:19,764 INFO L93 Difference]: Finished difference Result 84484 states and 98433 transitions. [2023-12-20 01:11:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 761 states. [2023-12-20 01:11:19,764 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.661764705882353) internal successors, (317), 68 states have internal predecessors, (317), 0 states have call successors, (0), 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 110 [2023-12-20 01:11:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:11:19,831 INFO L225 Difference]: With dead ends: 84484 [2023-12-20 01:11:19,831 INFO L226 Difference]: Without dead ends: 75474 [2023-12-20 01:11:19,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 816 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312359 ImplicationChecksByTransitivity, 259.0s TimeCoverageRelationStatistics Valid=64027, Invalid=604279, Unknown=0, NotChecked=0, Total=668306 [2023-12-20 01:11:19,862 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 12924 mSDsluCounter, 10584 mSDsCounter, 0 mSdLazyCounter, 11755 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12924 SdHoareTripleChecker+Valid, 10891 SdHoareTripleChecker+Invalid, 12597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 11755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:11:19,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12924 Valid, 10891 Invalid, 12597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [842 Valid, 11755 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2023-12-20 01:11:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75474 states. [2023-12-20 01:11:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75474 to 41389. [2023-12-20 01:11:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41389 states, 41388 states have (on average 1.1679955542669374) internal successors, (48341), 41388 states have internal predecessors, (48341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41389 states to 41389 states and 48341 transitions. [2023-12-20 01:11:24,130 INFO L78 Accepts]: Start accepts. Automaton has 41389 states and 48341 transitions. Word has length 110 [2023-12-20 01:11:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:11:24,130 INFO L495 AbstractCegarLoop]: Abstraction has 41389 states and 48341 transitions. [2023-12-20 01:11:24,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.661764705882353) internal successors, (317), 68 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:11:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 41389 states and 48341 transitions. [2023-12-20 01:11:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 01:11:24,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:11:24,140 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:11:24,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 01:11:24,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 01:11:24,346 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:11:24,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:11:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1148225146, now seen corresponding path program 1 times [2023-12-20 01:11:24,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:11:24,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945818822] [2023-12-20 01:11:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:24,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:11:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:25,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:11:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945818822] [2023-12-20 01:11:25,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945818822] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:11:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653538569] [2023-12-20 01:11:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:11:25,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:11:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:11:25,486 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:11:25,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 01:11:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:11:25,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-20 01:11:25,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:11:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 24 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:28,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:11:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 21 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:11:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653538569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:11:32,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:11:32,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 24] total 67 [2023-12-20 01:11:32,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189360228] [2023-12-20 01:11:32,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:11:32,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 01:11:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:11:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 01:11:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=4092, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 01:11:32,580 INFO L87 Difference]: Start difference. First operand 41389 states and 48341 transitions. Second operand has 67 states, 67 states have (on average 4.776119402985074) internal successors, (320), 67 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:14:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:14:38,711 INFO L93 Difference]: Finished difference Result 90789 states and 105989 transitions. [2023-12-20 01:14:38,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 658 states. [2023-12-20 01:14:38,712 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.776119402985074) internal successors, (320), 67 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-20 01:14:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:14:38,811 INFO L225 Difference]: With dead ends: 90789 [2023-12-20 01:14:38,812 INFO L226 Difference]: Without dead ends: 73044 [2023-12-20 01:14:38,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 721 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232591 ImplicationChecksByTransitivity, 170.1s TimeCoverageRelationStatistics Valid=47175, Invalid=474831, Unknown=0, NotChecked=0, Total=522006 [2023-12-20 01:14:38,842 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 14088 mSDsluCounter, 12308 mSDsCounter, 0 mSdLazyCounter, 12620 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14088 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 13283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 12620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:14:38,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14088 Valid, 12679 Invalid, 13283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [663 Valid, 12620 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-20 01:14:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73044 states. [2023-12-20 01:14:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73044 to 57929. [2023-12-20 01:14:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57929 states, 57928 states have (on average 1.1737674354370944) internal successors, (67994), 57928 states have internal predecessors, (67994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:14:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57929 states to 57929 states and 67994 transitions. [2023-12-20 01:14:45,024 INFO L78 Accepts]: Start accepts. Automaton has 57929 states and 67994 transitions. Word has length 111 [2023-12-20 01:14:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:14:45,024 INFO L495 AbstractCegarLoop]: Abstraction has 57929 states and 67994 transitions. [2023-12-20 01:14:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.776119402985074) internal successors, (320), 67 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:14:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 57929 states and 67994 transitions. [2023-12-20 01:14:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 01:14:45,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:14:45,034 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2023-12-20 01:14:45,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 01:14:45,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:14:45,240 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:14:45,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:14:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1344287032, now seen corresponding path program 1 times [2023-12-20 01:14:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:14:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497428493] [2023-12-20 01:14:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:14:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:14:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:14:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 133 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:14:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:14:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497428493] [2023-12-20 01:14:45,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497428493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:14:45,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717886656] [2023-12-20 01:14:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:14:45,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:14:45,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:14:45,685 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:14:45,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 01:14:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:14:45,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 01:14:45,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:14:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 133 proven. 70 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:14:46,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:14:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 140 proven. 63 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:14:47,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717886656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:14:47,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:14:47,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 31 [2023-12-20 01:14:47,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092689873] [2023-12-20 01:14:47,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:14:47,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 01:14:47,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:14:47,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 01:14:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2023-12-20 01:14:47,357 INFO L87 Difference]: Start difference. First operand 57929 states and 67994 transitions. Second operand has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:14:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:14:59,201 INFO L93 Difference]: Finished difference Result 120341 states and 141534 transitions. [2023-12-20 01:14:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-20 01:14:59,202 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 01:14:59,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:14:59,280 INFO L225 Difference]: With dead ends: 120341 [2023-12-20 01:14:59,280 INFO L226 Difference]: Without dead ends: 70497 [2023-12-20 01:14:59,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4455 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2147, Invalid=11895, Unknown=0, NotChecked=0, Total=14042 [2023-12-20 01:14:59,306 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 2090 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:14:59,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1871 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:14:59,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70497 states. [2023-12-20 01:15:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70497 to 54313. [2023-12-20 01:15:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54313 states, 54312 states have (on average 1.1575526587126235) internal successors, (62869), 54312 states have internal predecessors, (62869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54313 states to 54313 states and 62869 transitions. [2023-12-20 01:15:05,563 INFO L78 Accepts]: Start accepts. Automaton has 54313 states and 62869 transitions. Word has length 145 [2023-12-20 01:15:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:15:05,563 INFO L495 AbstractCegarLoop]: Abstraction has 54313 states and 62869 transitions. [2023-12-20 01:15:05,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 54313 states and 62869 transitions. [2023-12-20 01:15:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 01:15:05,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:15:05,569 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:15:05,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 01:15:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:15:05,775 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:15:05,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:15:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1577055368, now seen corresponding path program 1 times [2023-12-20 01:15:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:15:05,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462143819] [2023-12-20 01:15:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:15:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 132 proven. 24 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 01:15:06,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:15:06,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462143819] [2023-12-20 01:15:06,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462143819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:15:06,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021539432] [2023-12-20 01:15:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:06,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:15:06,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:15:06,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:15:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 01:15:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:06,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 01:15:06,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:15:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 132 proven. 24 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 01:15:07,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:15:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 132 proven. 24 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 01:15:08,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021539432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:15:08,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:15:08,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2023-12-20 01:15:08,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991798570] [2023-12-20 01:15:08,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:15:08,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 01:15:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:15:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 01:15:08,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2023-12-20 01:15:08,029 INFO L87 Difference]: Start difference. First operand 54313 states and 62869 transitions. Second operand has 28 states, 28 states have (on average 7.142857142857143) internal successors, (200), 27 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:15:17,395 INFO L93 Difference]: Finished difference Result 68327 states and 79092 transitions. [2023-12-20 01:15:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 01:15:17,396 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.142857142857143) internal successors, (200), 27 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 01:15:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:15:17,452 INFO L225 Difference]: With dead ends: 68327 [2023-12-20 01:15:17,452 INFO L226 Difference]: Without dead ends: 62308 [2023-12-20 01:15:17,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1104, Invalid=4008, Unknown=0, NotChecked=0, Total=5112 [2023-12-20 01:15:17,461 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1900 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:15:17,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 2257 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:15:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62308 states. [2023-12-20 01:15:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62308 to 53211. [2023-12-20 01:15:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53211 states, 53210 states have (on average 1.1570193572636722) internal successors, (61565), 53210 states have internal predecessors, (61565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53211 states to 53211 states and 61565 transitions. [2023-12-20 01:15:23,828 INFO L78 Accepts]: Start accepts. Automaton has 53211 states and 61565 transitions. Word has length 145 [2023-12-20 01:15:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:15:23,829 INFO L495 AbstractCegarLoop]: Abstraction has 53211 states and 61565 transitions. [2023-12-20 01:15:23,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.142857142857143) internal successors, (200), 27 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 53211 states and 61565 transitions. [2023-12-20 01:15:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 01:15:23,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:15:23,834 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2023-12-20 01:15:23,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 01:15:24,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 01:15:24,040 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:15:24,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:15:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1040044218, now seen corresponding path program 1 times [2023-12-20 01:15:24,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:15:24,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991396869] [2023-12-20 01:15:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:24,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:15:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 65 proven. 154 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-20 01:15:24,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:15:24,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991396869] [2023-12-20 01:15:24,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991396869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:15:24,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242954177] [2023-12-20 01:15:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:24,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:15:24,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:15:24,518 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:15:24,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 01:15:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:24,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 01:15:24,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:15:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 135 proven. 62 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:15:25,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:15:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 158 proven. 39 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 01:15:25,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242954177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:15:25,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:15:25,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 31 [2023-12-20 01:15:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885907403] [2023-12-20 01:15:25,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:15:25,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 01:15:25,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:15:25,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 01:15:25,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2023-12-20 01:15:25,899 INFO L87 Difference]: Start difference. First operand 53211 states and 61565 transitions. Second operand has 31 states, 31 states have (on average 10.161290322580646) internal successors, (315), 31 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:15:42,458 INFO L93 Difference]: Finished difference Result 89833 states and 103927 transitions. [2023-12-20 01:15:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-20 01:15:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.161290322580646) internal successors, (315), 31 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 01:15:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:15:42,526 INFO L225 Difference]: With dead ends: 89833 [2023-12-20 01:15:42,526 INFO L226 Difference]: Without dead ends: 78660 [2023-12-20 01:15:42,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7163 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2895, Invalid=17697, Unknown=0, NotChecked=0, Total=20592 [2023-12-20 01:15:42,537 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 1750 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:15:42,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 1929 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:15:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78660 states. [2023-12-20 01:15:49,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78660 to 53779. [2023-12-20 01:15:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53779 states, 53778 states have (on average 1.1551935735802745) internal successors, (62124), 53778 states have internal predecessors, (62124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53779 states to 53779 states and 62124 transitions. [2023-12-20 01:15:49,776 INFO L78 Accepts]: Start accepts. Automaton has 53779 states and 62124 transitions. Word has length 145 [2023-12-20 01:15:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:15:49,776 INFO L495 AbstractCegarLoop]: Abstraction has 53779 states and 62124 transitions. [2023-12-20 01:15:49,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.161290322580646) internal successors, (315), 31 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:15:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 53779 states and 62124 transitions. [2023-12-20 01:15:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 01:15:49,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:15:49,783 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:15:49,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 01:15:49,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:15:49,988 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:15:49,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:15:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1947825414, now seen corresponding path program 1 times [2023-12-20 01:15:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:15:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003805040] [2023-12-20 01:15:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:15:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 125 proven. 92 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:15:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:15:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003805040] [2023-12-20 01:15:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003805040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:15:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592986398] [2023-12-20 01:15:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:15:50,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:15:50,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:15:50,742 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:15:50,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 01:15:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:15:50,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 01:15:50,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:15:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 140 proven. 70 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:15:52,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:15:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 116 proven. 94 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:15:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592986398] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:15:53,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:15:53,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 34 [2023-12-20 01:15:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267369022] [2023-12-20 01:15:53,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:15:53,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 01:15:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:15:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 01:15:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1024, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:15:53,795 INFO L87 Difference]: Start difference. First operand 53779 states and 62124 transitions. Second operand has 35 states, 35 states have (on average 9.028571428571428) internal successors, (316), 34 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) Received shutdown request... [2023-12-20 01:16:01,326 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:16:01,327 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:16:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-20 01:16:01,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2312 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1798, Invalid=6574, Unknown=0, NotChecked=0, Total=8372 [2023-12-20 01:16:01,328 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 2596 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:16:01,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 3216 Invalid, 2387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 01:16:01,329 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:16:01,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 01:16:01,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:16:01,535 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (53779states) and FLOYD_HOARE automaton (currently 60 states, 35 states before enhancement),while ReachableStatesComputation was computing reachable states (36748 states constructed, input type IntersectNwa). [2023-12-20 01:16:01,538 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:16:01,540 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:16:01,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:16:01 BoogieIcfgContainer [2023-12-20 01:16:01,544 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:16:01,544 INFO L158 Benchmark]: Toolchain (without parser) took 846390.24ms. Allocated memory was 231.7MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 178.2MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 01:16:01,548 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory was 139.8MB in the beginning and 139.7MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:16:01,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.56ms. Allocated memory is still 231.7MB. Free memory was 177.9MB in the beginning and 164.0MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 01:16:01,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.69ms. Allocated memory is still 231.7MB. Free memory was 164.0MB in the beginning and 161.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 01:16:01,548 INFO L158 Benchmark]: Boogie Preprocessor took 39.97ms. Allocated memory is still 231.7MB. Free memory was 161.4MB in the beginning and 158.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 01:16:01,550 INFO L158 Benchmark]: RCFGBuilder took 482.71ms. Allocated memory is still 231.7MB. Free memory was 158.5MB in the beginning and 188.0MB in the end (delta: -29.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-20 01:16:01,550 INFO L158 Benchmark]: TraceAbstraction took 845550.73ms. Allocated memory was 231.7MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 187.4MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-20 01:16:01,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory was 139.8MB in the beginning and 139.7MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.56ms. Allocated memory is still 231.7MB. Free memory was 177.9MB in the beginning and 164.0MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.69ms. Allocated memory is still 231.7MB. Free memory was 164.0MB in the beginning and 161.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.97ms. Allocated memory is still 231.7MB. Free memory was 161.4MB in the beginning and 158.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 482.71ms. Allocated memory is still 231.7MB. Free memory was 158.5MB in the beginning and 188.0MB in the end (delta: -29.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 845550.73ms. Allocated memory was 231.7MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 187.4MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 314]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 314). Cancelled while NwaCegarLoop was constructing difference of abstraction (53779states) and FLOYD_HOARE automaton (currently 60 states, 35 states before enhancement),while ReachableStatesComputation was computing reachable states (36748 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 845.5s, OverallIterations: 37, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 717.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73060 SdHoareTripleChecker+Valid, 52.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73060 mSDsluCounter, 71040 SdHoareTripleChecker+Invalid, 46.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66203 mSDsCounter, 3296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65345 IncrementalHoareTripleChecker+Invalid, 68641 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3296 mSolverCounterUnsat, 4837 mSDtfsCounter, 65345 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7531 GetRequests, 3468 SyntacticMatches, 19 SemanticMatches, 4044 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910770 ImplicationChecksByTransitivity, 578.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71292occurred in iteration=28, InterpolantAutomatonStates: 3525, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 69.7s AutomataMinimizationTime, 36 MinimizatonAttempts, 468036 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 51.7s InterpolantComputationTime, 4901 NumberOfCodeBlocks, 4901 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 6707 ConstructedInterpolants, 0 QuantifiedInterpolants, 112976 SizeOfPredicates, 124 NumberOfNonLiveVariables, 6545 ConjunctsInSsa, 399 ConjunctsInUnsatCore, 73 InterpolantComputations, 19 PerfectInterpolantSequences, 3204/5503 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown