/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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:26:19,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:26:19,692 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 01:26:19,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:26:19,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:26:19,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:26:19,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:26:19,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:26:19,726 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:26:19,731 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:26:19,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:26:19,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:26:19,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:26:19,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:26:19,734 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:26:19,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:26:19,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:26:19,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:26:19,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:26:19,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:26:19,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:26:19,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:26:19,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:26:19,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:26:19,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:26:19,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:26:19,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:26:19,736 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:26:19,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:26:19,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:26:19,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:26:19,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:26:19,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:26:19,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:26:19,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:26:19,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:26:19,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:26:19,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:26:19,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:26:19,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:26:19,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:26:19,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:26:19,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:26:19,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:26:19,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:26:19,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:26:19,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:26:19,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:26:19,999 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:26:19,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:26:21,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:26:21,397 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:26:21,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:26:21,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda776ca4/27256053b6ed4609b2a4acf7d414ea1d/FLAG3467e0257 [2023-12-20 01:26:21,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda776ca4/27256053b6ed4609b2a4acf7d414ea1d [2023-12-20 01:26:21,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:26:21,424 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:26:21,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:26:21,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:26:21,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:26:21,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d31fbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21, skipping insertion in model container [2023-12-20 01:26:21,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:26:21,679 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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c[12951,12964] [2023-12-20 01:26:21,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:26:21,699 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:26:21,774 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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c[12951,12964] [2023-12-20 01:26:21,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:26:21,791 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:26:21,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21 WrapperNode [2023-12-20 01:26:21,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:26:21,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:26:21,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:26:21,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:26:21,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,841 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 472 [2023-12-20 01:26:21,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:26:21,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:26:21,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:26:21,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:26:21,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,882 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 01:26:21,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:26:21,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:26:21,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:26:21,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:26:21,923 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (1/1) ... [2023-12-20 01:26:21,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:26:21,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:26:21,981 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 01:26:22,006 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 01:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:26:22,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:26:22,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:26:22,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:26:22,103 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:26:22,105 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:26:22,565 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:26:22,598 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:26:22,598 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:26:22,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:26:22 BoogieIcfgContainer [2023-12-20 01:26:22,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:26:22,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:26:22,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:26:22,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:26:22,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:26:21" (1/3) ... [2023-12-20 01:26:22,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a64016c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:26:22, skipping insertion in model container [2023-12-20 01:26:22,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:26:21" (2/3) ... [2023-12-20 01:26:22,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a64016c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:26:22, skipping insertion in model container [2023-12-20 01:26:22,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:26:22" (3/3) ... [2023-12-20 01:26:22,605 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2023-12-20 01:26:22,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:26:22,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:26:22,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:26:22,663 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;@9b9bd39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:26:22,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:26:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.7903225806451613) internal successors, (222), 125 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 01:26:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:26:22,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:22,682 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] [2023-12-20 01:26:22,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:22,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:22,688 INFO L85 PathProgramCache]: Analyzing trace with hash 112072983, now seen corresponding path program 1 times [2023-12-20 01:26:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903711492] [2023-12-20 01:26:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:22,946 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 01:26:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:22,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903711492] [2023-12-20 01:26:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903711492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:22,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:22,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:26:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761992217] [2023-12-20 01:26:22,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:22,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:26:22,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:26:22,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:26:22,985 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.7903225806451613) internal successors, (222), 125 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 01:26:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:23,034 INFO L93 Difference]: Finished difference Result 199 states and 349 transitions. [2023-12-20 01:26:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:26:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 01:26:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:23,047 INFO L225 Difference]: With dead ends: 199 [2023-12-20 01:26:23,047 INFO L226 Difference]: Without dead ends: 124 [2023-12-20 01:26:23,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:26:23,053 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:23,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-20 01:26:23,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-20 01:26:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.7642276422764227) internal successors, (217), 123 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 01:26:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 217 transitions. [2023-12-20 01:26:23,098 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 217 transitions. Word has length 34 [2023-12-20 01:26:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:23,099 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 217 transitions. [2023-12-20 01:26:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 01:26:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 217 transitions. [2023-12-20 01:26:23,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 01:26:23,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:23,102 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] [2023-12-20 01:26:23,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:26:23,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:23,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1576870759, now seen corresponding path program 1 times [2023-12-20 01:26:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480810172] [2023-12-20 01:26:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:23,317 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 01:26:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480810172] [2023-12-20 01:26:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480810172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:23,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:26:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889540893] [2023-12-20 01:26:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:26:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:26:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:23,322 INFO L87 Difference]: Start difference. First operand 124 states and 217 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 01:26:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:23,385 INFO L93 Difference]: Finished difference Result 199 states and 343 transitions. [2023-12-20 01:26:23,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:26:23,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 01:26:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:23,387 INFO L225 Difference]: With dead ends: 199 [2023-12-20 01:26:23,387 INFO L226 Difference]: Without dead ends: 124 [2023-12-20 01:26:23,388 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 01:26:23,389 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:23,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 615 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-20 01:26:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-12-20 01:26:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.5691056910569106) internal successors, (193), 123 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 01:26:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 193 transitions. [2023-12-20 01:26:23,398 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 193 transitions. Word has length 34 [2023-12-20 01:26:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:23,398 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 193 transitions. [2023-12-20 01:26:23,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 01:26:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 193 transitions. [2023-12-20 01:26:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 01:26:23,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:23,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:23,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:26:23,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:23,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1784041878, now seen corresponding path program 1 times [2023-12-20 01:26:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:23,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857367228] [2023-12-20 01:26:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:23,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:23,547 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 01:26:23,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857367228] [2023-12-20 01:26:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857367228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:23,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481606387] [2023-12-20 01:26:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:23,555 INFO L87 Difference]: Start difference. First operand 124 states and 193 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 01:26:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:23,617 INFO L93 Difference]: Finished difference Result 258 states and 421 transitions. [2023-12-20 01:26:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-20 01:26:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:23,619 INFO L225 Difference]: With dead ends: 258 [2023-12-20 01:26:23,620 INFO L226 Difference]: Without dead ends: 186 [2023-12-20 01:26:23,620 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 01:26:23,621 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 96 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:23,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 338 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-20 01:26:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2023-12-20 01:26:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.5934065934065933) internal successors, (290), 182 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 01:26:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 290 transitions. [2023-12-20 01:26:23,631 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 290 transitions. Word has length 57 [2023-12-20 01:26:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:23,632 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 290 transitions. [2023-12-20 01:26:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 01:26:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 290 transitions. [2023-12-20 01:26:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 01:26:23,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:23,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:23,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:26:23,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:23,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash 803496124, now seen corresponding path program 1 times [2023-12-20 01:26:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596810700] [2023-12-20 01:26:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:23,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:23,717 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 01:26:23,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:23,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596810700] [2023-12-20 01:26:23,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596810700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:23,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965354909] [2023-12-20 01:26:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:23,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:23,721 INFO L87 Difference]: Start difference. First operand 183 states and 290 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 01:26:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:23,743 INFO L93 Difference]: Finished difference Result 429 states and 702 transitions. [2023-12-20 01:26:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:23,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:26:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:23,746 INFO L225 Difference]: With dead ends: 429 [2023-12-20 01:26:23,747 INFO L226 Difference]: Without dead ends: 298 [2023-12-20 01:26:23,751 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 01:26:23,752 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 98 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 351 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-20 01:26:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2023-12-20 01:26:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.621160409556314) internal successors, (475), 293 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 01:26:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 475 transitions. [2023-12-20 01:26:23,765 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 475 transitions. Word has length 59 [2023-12-20 01:26:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:23,765 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 475 transitions. [2023-12-20 01:26:23,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 01:26:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 475 transitions. [2023-12-20 01:26:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 01:26:23,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:23,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:23,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:26:23,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:23,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -233084402, now seen corresponding path program 1 times [2023-12-20 01:26:23,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:23,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105419781] [2023-12-20 01:26:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:23,834 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 01:26:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105419781] [2023-12-20 01:26:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105419781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716357905] [2023-12-20 01:26:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:23,838 INFO L87 Difference]: Start difference. First operand 294 states and 475 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:26:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:23,867 INFO L93 Difference]: Finished difference Result 746 states and 1229 transitions. [2023-12-20 01:26:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:23,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:26:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:23,871 INFO L225 Difference]: With dead ends: 746 [2023-12-20 01:26:23,871 INFO L226 Difference]: Without dead ends: 504 [2023-12-20 01:26:23,873 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 01:26:23,873 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 92 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:23,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 352 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-20 01:26:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2023-12-20 01:26:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.6317907444668007) internal successors, (811), 497 states have internal predecessors, (811), 0 states have call successors, (0), 0 states 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 01:26:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 811 transitions. [2023-12-20 01:26:23,896 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 811 transitions. Word has length 61 [2023-12-20 01:26:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:23,896 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 811 transitions. [2023-12-20 01:26:23,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 01:26:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 811 transitions. [2023-12-20 01:26:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 01:26:23,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:23,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:26:23,898 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:23,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1158493600, now seen corresponding path program 1 times [2023-12-20 01:26:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37095762] [2023-12-20 01:26:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:26:24,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:24,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37095762] [2023-12-20 01:26:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37095762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:24,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:24,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:26:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246143642] [2023-12-20 01:26:24,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:24,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:26:24,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:26:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:24,018 INFO L87 Difference]: Start difference. First operand 498 states and 811 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:24,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:24,171 INFO L93 Difference]: Finished difference Result 2146 states and 3589 transitions. [2023-12-20 01:26:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 01:26:24,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 01:26:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:24,180 INFO L225 Difference]: With dead ends: 2146 [2023-12-20 01:26:24,181 INFO L226 Difference]: Without dead ends: 1700 [2023-12-20 01:26:24,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:26:24,183 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 807 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:24,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1102 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:26:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-12-20 01:26:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 889. [2023-12-20 01:26:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 1.6452702702702702) internal successors, (1461), 888 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states 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 01:26:24,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1461 transitions. [2023-12-20 01:26:24,219 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1461 transitions. Word has length 63 [2023-12-20 01:26:24,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:24,220 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1461 transitions. [2023-12-20 01:26:24,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1461 transitions. [2023-12-20 01:26:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 01:26:24,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:24,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:24,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:26:24,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:24,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1616284277, now seen corresponding path program 1 times [2023-12-20 01:26:24,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:24,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509173350] [2023-12-20 01:26:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:24,323 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 01:26:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509173350] [2023-12-20 01:26:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509173350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:24,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:24,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:26:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953196102] [2023-12-20 01:26:24,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:24,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:26:24,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:26:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:24,326 INFO L87 Difference]: Start difference. First operand 889 states and 1461 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 01:26:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:24,412 INFO L93 Difference]: Finished difference Result 2602 states and 4342 transitions. [2023-12-20 01:26:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:26:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 01:26:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:24,419 INFO L225 Difference]: With dead ends: 2602 [2023-12-20 01:26:24,419 INFO L226 Difference]: Without dead ends: 1765 [2023-12-20 01:26:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:24,424 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 353 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:24,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 623 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2023-12-20 01:26:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1318. [2023-12-20 01:26:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 1.6529992406985574) internal successors, (2177), 1317 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states 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 01:26:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2177 transitions. [2023-12-20 01:26:24,461 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2177 transitions. Word has length 64 [2023-12-20 01:26:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:24,462 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2177 transitions. [2023-12-20 01:26:24,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 01:26:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2177 transitions. [2023-12-20 01:26:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 01:26:24,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:24,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:24,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:26:24,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:24,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1377525673, now seen corresponding path program 1 times [2023-12-20 01:26:24,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:24,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414946579] [2023-12-20 01:26:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:24,546 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 01:26:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414946579] [2023-12-20 01:26:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414946579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:24,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:24,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:26:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241217051] [2023-12-20 01:26:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:24,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:26:24,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:26:24,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:24,549 INFO L87 Difference]: Start difference. First operand 1318 states and 2177 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:24,627 INFO L93 Difference]: Finished difference Result 3836 states and 6386 transitions. [2023-12-20 01:26:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:26:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 01:26:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:24,636 INFO L225 Difference]: With dead ends: 3836 [2023-12-20 01:26:24,636 INFO L226 Difference]: Without dead ends: 2570 [2023-12-20 01:26:24,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:24,639 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 353 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:24,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 578 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2023-12-20 01:26:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1932. [2023-12-20 01:26:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 1.6504401864319005) internal successors, (3187), 1931 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states 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 01:26:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 3187 transitions. [2023-12-20 01:26:24,699 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 3187 transitions. Word has length 65 [2023-12-20 01:26:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:24,699 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 3187 transitions. [2023-12-20 01:26:24,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 3187 transitions. [2023-12-20 01:26:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 01:26:24,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:24,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:24,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:26:24,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:24,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -298194636, now seen corresponding path program 1 times [2023-12-20 01:26:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877904454] [2023-12-20 01:26:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:24,777 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 01:26:24,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:24,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877904454] [2023-12-20 01:26:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877904454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:24,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:26:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028677794] [2023-12-20 01:26:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:24,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:26:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:24,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:26:24,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:24,780 INFO L87 Difference]: Start difference. First operand 1932 states and 3187 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 01:26:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:24,906 INFO L93 Difference]: Finished difference Result 5592 states and 9282 transitions. [2023-12-20 01:26:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:26:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 01:26:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:24,919 INFO L225 Difference]: With dead ends: 5592 [2023-12-20 01:26:24,919 INFO L226 Difference]: Without dead ends: 3712 [2023-12-20 01:26:24,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:24,922 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 351 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:24,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 629 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2023-12-20 01:26:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 2806. [2023-12-20 01:26:25,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2805 states have (on average 1.6467023172905526) internal successors, (4619), 2805 states have internal predecessors, (4619), 0 states have call successors, (0), 0 states 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 01:26:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 4619 transitions. [2023-12-20 01:26:25,017 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 4619 transitions. Word has length 66 [2023-12-20 01:26:25,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:25,017 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 4619 transitions. [2023-12-20 01:26:25,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 01:26:25,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 4619 transitions. [2023-12-20 01:26:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 01:26:25,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:25,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:25,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:26:25,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:25,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1449996775, now seen corresponding path program 1 times [2023-12-20 01:26:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:25,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952311767] [2023-12-20 01:26:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:25,060 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 01:26:25,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952311767] [2023-12-20 01:26:25,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952311767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:25,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:25,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:25,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173999943] [2023-12-20 01:26:25,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:25,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:25,062 INFO L87 Difference]: Start difference. First operand 2806 states and 4619 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:25,128 INFO L93 Difference]: Finished difference Result 6432 states and 10586 transitions. [2023-12-20 01:26:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-20 01:26:25,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:25,143 INFO L225 Difference]: With dead ends: 6432 [2023-12-20 01:26:25,144 INFO L226 Difference]: Without dead ends: 4426 [2023-12-20 01:26:25,147 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 01:26:25,148 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 91 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 391 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 01:26:25,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 391 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2023-12-20 01:26:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4424. [2023-12-20 01:26:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 1.6305674881302283) internal successors, (7212), 4423 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states 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 01:26:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 7212 transitions. [2023-12-20 01:26:25,272 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 7212 transitions. Word has length 67 [2023-12-20 01:26:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:25,272 INFO L495 AbstractCegarLoop]: Abstraction has 4424 states and 7212 transitions. [2023-12-20 01:26:25,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 7212 transitions. [2023-12-20 01:26:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 01:26:25,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:25,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:25,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:26:25,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:25,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1388120921, now seen corresponding path program 1 times [2023-12-20 01:26:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561189027] [2023-12-20 01:26:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:25,330 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 01:26:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:25,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561189027] [2023-12-20 01:26:25,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561189027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:25,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:25,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173819345] [2023-12-20 01:26:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:25,332 INFO L87 Difference]: Start difference. First operand 4424 states and 7212 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:25,455 INFO L93 Difference]: Finished difference Result 9732 states and 15910 transitions. [2023-12-20 01:26:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-20 01:26:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:25,477 INFO L225 Difference]: With dead ends: 9732 [2023-12-20 01:26:25,477 INFO L226 Difference]: Without dead ends: 6592 [2023-12-20 01:26:25,481 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 01:26:25,482 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 97 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 419 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 01:26:25,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 419 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2023-12-20 01:26:25,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 6590. [2023-12-20 01:26:25,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 1.6208832903323722) internal successors, (10680), 6589 states have internal predecessors, (10680), 0 states have call successors, (0), 0 states 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 01:26:25,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 10680 transitions. [2023-12-20 01:26:25,660 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 10680 transitions. Word has length 67 [2023-12-20 01:26:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:25,661 INFO L495 AbstractCegarLoop]: Abstraction has 6590 states and 10680 transitions. [2023-12-20 01:26:25,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 10680 transitions. [2023-12-20 01:26:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 01:26:25,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:25,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:25,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:26:25,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:25,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash -169105561, now seen corresponding path program 1 times [2023-12-20 01:26:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190030686] [2023-12-20 01:26:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:25,702 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 01:26:25,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:25,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190030686] [2023-12-20 01:26:25,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190030686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:25,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:25,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:25,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161308688] [2023-12-20 01:26:25,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:25,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:25,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:25,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:25,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:25,704 INFO L87 Difference]: Start difference. First operand 6590 states and 10680 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:25,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:25,846 INFO L93 Difference]: Finished difference Result 14789 states and 24186 transitions. [2023-12-20 01:26:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:25,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-20 01:26:25,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:25,878 INFO L225 Difference]: With dead ends: 14789 [2023-12-20 01:26:25,878 INFO L226 Difference]: Without dead ends: 9940 [2023-12-20 01:26:25,886 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 01:26:25,887 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 103 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 439 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 01:26:25,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 439 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2023-12-20 01:26:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 9938. [2023-12-20 01:26:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9938 states, 9937 states have (on average 1.6148737043373251) internal successors, (16047), 9937 states have internal predecessors, (16047), 0 states have call successors, (0), 0 states 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 01:26:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9938 states to 9938 states and 16047 transitions. [2023-12-20 01:26:26,175 INFO L78 Accepts]: Start accepts. Automaton has 9938 states and 16047 transitions. Word has length 67 [2023-12-20 01:26:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:26,176 INFO L495 AbstractCegarLoop]: Abstraction has 9938 states and 16047 transitions. [2023-12-20 01:26:26,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9938 states and 16047 transitions. [2023-12-20 01:26:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 01:26:26,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:26,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:26,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:26:26,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:26,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -278553348, now seen corresponding path program 1 times [2023-12-20 01:26:26,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:26,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382030643] [2023-12-20 01:26:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:26,335 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 01:26:26,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:26,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382030643] [2023-12-20 01:26:26,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382030643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:26,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:26,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:26:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345121119] [2023-12-20 01:26:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:26,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:26:26,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:26:26,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:26,337 INFO L87 Difference]: Start difference. First operand 9938 states and 16047 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:26,578 INFO L93 Difference]: Finished difference Result 19808 states and 31999 transitions. [2023-12-20 01:26:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:26:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-20 01:26:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:26,598 INFO L225 Difference]: With dead ends: 19808 [2023-12-20 01:26:26,599 INFO L226 Difference]: Without dead ends: 9940 [2023-12-20 01:26:26,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:26:26,612 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 187 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:26,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 509 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2023-12-20 01:26:26,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 9938. [2023-12-20 01:26:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9938 states, 9937 states have (on average 1.6022944550669216) internal successors, (15922), 9937 states have internal predecessors, (15922), 0 states have call successors, (0), 0 states 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 01:26:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9938 states to 9938 states and 15922 transitions. [2023-12-20 01:26:26,935 INFO L78 Accepts]: Start accepts. Automaton has 9938 states and 15922 transitions. Word has length 68 [2023-12-20 01:26:26,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 9938 states and 15922 transitions. [2023-12-20 01:26:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9938 states and 15922 transitions. [2023-12-20 01:26:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 01:26:26,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:26,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:26:26,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:26,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1971650970, now seen corresponding path program 1 times [2023-12-20 01:26:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081585049] [2023-12-20 01:26:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:27,089 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 01:26:27,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:27,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081585049] [2023-12-20 01:26:27,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081585049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:27,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:27,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:26:27,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330273239] [2023-12-20 01:26:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:27,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:26:27,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:26:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:27,092 INFO L87 Difference]: Start difference. First operand 9938 states and 15922 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:26:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:27,409 INFO L93 Difference]: Finished difference Result 28488 states and 45785 transitions. [2023-12-20 01:26:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:26:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-20 01:26:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:27,449 INFO L225 Difference]: With dead ends: 28488 [2023-12-20 01:26:27,450 INFO L226 Difference]: Without dead ends: 18620 [2023-12-20 01:26:27,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:26:27,467 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 183 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:27,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 513 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18620 states. [2023-12-20 01:26:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18620 to 18618. [2023-12-20 01:26:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18618 states, 18617 states have (on average 1.5882795294623193) internal successors, (29569), 18617 states have internal predecessors, (29569), 0 states have call successors, (0), 0 states 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 01:26:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18618 states to 18618 states and 29569 transitions. [2023-12-20 01:26:27,963 INFO L78 Accepts]: Start accepts. Automaton has 18618 states and 29569 transitions. Word has length 71 [2023-12-20 01:26:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:27,964 INFO L495 AbstractCegarLoop]: Abstraction has 18618 states and 29569 transitions. [2023-12-20 01:26:27,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:26:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 18618 states and 29569 transitions. [2023-12-20 01:26:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 01:26:27,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:27,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:27,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:26:27,965 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:27,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1006157133, now seen corresponding path program 1 times [2023-12-20 01:26:27,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:27,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163717932] [2023-12-20 01:26:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:28,175 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 01:26:28,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:28,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163717932] [2023-12-20 01:26:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163717932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:28,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:28,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:26:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031724712] [2023-12-20 01:26:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:28,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:26:28,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:26:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:26:28,177 INFO L87 Difference]: Start difference. First operand 18618 states and 29569 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 01:26:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:28,440 INFO L93 Difference]: Finished difference Result 19706 states and 31018 transitions. [2023-12-20 01:26:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:26:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-20 01:26:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:28,483 INFO L225 Difference]: With dead ends: 19706 [2023-12-20 01:26:28,483 INFO L226 Difference]: Without dead ends: 19704 [2023-12-20 01:26:28,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:26:28,493 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 2 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:28,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 925 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:26:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19704 states. [2023-12-20 01:26:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19704 to 19342. [2023-12-20 01:26:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19342 states, 19341 states have (on average 1.5657928752391292) internal successors, (30284), 19341 states have internal predecessors, (30284), 0 states have call successors, (0), 0 states 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 01:26:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19342 states to 19342 states and 30284 transitions. [2023-12-20 01:26:29,020 INFO L78 Accepts]: Start accepts. Automaton has 19342 states and 30284 transitions. Word has length 72 [2023-12-20 01:26:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:29,021 INFO L495 AbstractCegarLoop]: Abstraction has 19342 states and 30284 transitions. [2023-12-20 01:26:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 01:26:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 19342 states and 30284 transitions. [2023-12-20 01:26:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 01:26:29,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:29,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:29,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:26:29,023 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:29,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1175642537, now seen corresponding path program 1 times [2023-12-20 01:26:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:29,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114092988] [2023-12-20 01:26:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:29,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:26:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114092988] [2023-12-20 01:26:29,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114092988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:29,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:29,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:26:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487142632] [2023-12-20 01:26:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:29,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:26:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:26:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:29,122 INFO L87 Difference]: Start difference. First operand 19342 states and 30284 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 01:26:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:29,681 INFO L93 Difference]: Finished difference Result 47460 states and 74554 transitions. [2023-12-20 01:26:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:26:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 01:26:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:29,774 INFO L225 Difference]: With dead ends: 47460 [2023-12-20 01:26:29,774 INFO L226 Difference]: Without dead ends: 38248 [2023-12-20 01:26:29,796 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 01:26:29,797 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 449 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:29,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 795 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:26:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38248 states. [2023-12-20 01:26:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38248 to 29784. [2023-12-20 01:26:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29784 states, 29783 states have (on average 1.5639794513648726) internal successors, (46580), 29783 states have internal predecessors, (46580), 0 states have call successors, (0), 0 states 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 01:26:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29784 states to 29784 states and 46580 transitions. [2023-12-20 01:26:30,719 INFO L78 Accepts]: Start accepts. Automaton has 29784 states and 46580 transitions. Word has length 99 [2023-12-20 01:26:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:30,719 INFO L495 AbstractCegarLoop]: Abstraction has 29784 states and 46580 transitions. [2023-12-20 01:26:30,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 01:26:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 29784 states and 46580 transitions. [2023-12-20 01:26:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 01:26:30,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:30,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:30,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:26:30,721 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:30,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 281207063, now seen corresponding path program 1 times [2023-12-20 01:26:30,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:30,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060880432] [2023-12-20 01:26:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:26:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060880432] [2023-12-20 01:26:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060880432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:26:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661895057] [2023-12-20 01:26:30,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:30,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:26:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:26:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:30,832 INFO L87 Difference]: Start difference. First operand 29784 states and 46580 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 01:26:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:31,376 INFO L93 Difference]: Finished difference Result 51176 states and 80398 transitions. [2023-12-20 01:26:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:26:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 01:26:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:31,474 INFO L225 Difference]: With dead ends: 51176 [2023-12-20 01:26:31,474 INFO L226 Difference]: Without dead ends: 41964 [2023-12-20 01:26:31,497 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 01:26:31,498 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 440 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:31,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 908 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:26:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41964 states. [2023-12-20 01:26:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41964 to 40422. [2023-12-20 01:26:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40422 states, 40421 states have (on average 1.564483807921625) internal successors, (63238), 40421 states have internal predecessors, (63238), 0 states have call successors, (0), 0 states 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 01:26:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40422 states to 40422 states and 63238 transitions. [2023-12-20 01:26:32,747 INFO L78 Accepts]: Start accepts. Automaton has 40422 states and 63238 transitions. Word has length 99 [2023-12-20 01:26:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:32,748 INFO L495 AbstractCegarLoop]: Abstraction has 40422 states and 63238 transitions. [2023-12-20 01:26:32,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 01:26:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 40422 states and 63238 transitions. [2023-12-20 01:26:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 01:26:32,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:32,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:26:32,750 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:32,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:32,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1500222423, now seen corresponding path program 1 times [2023-12-20 01:26:32,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:32,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236349469] [2023-12-20 01:26:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:32,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:26:32,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:32,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236349469] [2023-12-20 01:26:32,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236349469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:32,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:32,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 01:26:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491083065] [2023-12-20 01:26:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 01:26:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 01:26:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:26:32,866 INFO L87 Difference]: Start difference. First operand 40422 states and 63238 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:33,608 INFO L93 Difference]: Finished difference Result 57486 states and 90482 transitions. [2023-12-20 01:26:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 01:26:33,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-20 01:26:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:33,706 INFO L225 Difference]: With dead ends: 57486 [2023-12-20 01:26:33,707 INFO L226 Difference]: Without dead ends: 48044 [2023-12-20 01:26:33,725 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 01:26:33,725 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 450 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:33,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 814 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:33,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48044 states. [2023-12-20 01:26:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48044 to 46502. [2023-12-20 01:26:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46502 states, 46501 states have (on average 1.5673211328788628) internal successors, (72882), 46501 states have internal predecessors, (72882), 0 states have call successors, (0), 0 states 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 01:26:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46502 states to 46502 states and 72882 transitions. [2023-12-20 01:26:34,835 INFO L78 Accepts]: Start accepts. Automaton has 46502 states and 72882 transitions. Word has length 99 [2023-12-20 01:26:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:34,836 INFO L495 AbstractCegarLoop]: Abstraction has 46502 states and 72882 transitions. [2023-12-20 01:26:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 46502 states and 72882 transitions. [2023-12-20 01:26:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 01:26:34,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:34,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:34,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:26:34,838 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:34,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash -800466188, now seen corresponding path program 1 times [2023-12-20 01:26:34,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292190292] [2023-12-20 01:26:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:26:34,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:34,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292190292] [2023-12-20 01:26:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292190292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:34,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:34,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:26:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867523436] [2023-12-20 01:26:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:34,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:26:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:26:34,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:34,933 INFO L87 Difference]: Start difference. First operand 46502 states and 72882 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 01:26:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:35,668 INFO L93 Difference]: Finished difference Result 76005 states and 119801 transitions. [2023-12-20 01:26:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:26:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 01:26:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:35,758 INFO L225 Difference]: With dead ends: 76005 [2023-12-20 01:26:35,758 INFO L226 Difference]: Without dead ends: 60483 [2023-12-20 01:26:35,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:35,783 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 186 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:35,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 646 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60483 states. [2023-12-20 01:26:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60483 to 58943. [2023-12-20 01:26:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58943 states, 58942 states have (on average 1.5676088358046893) internal successors, (92398), 58942 states have internal predecessors, (92398), 0 states have call successors, (0), 0 states 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 01:26:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58943 states to 58943 states and 92398 transitions. [2023-12-20 01:26:37,004 INFO L78 Accepts]: Start accepts. Automaton has 58943 states and 92398 transitions. Word has length 100 [2023-12-20 01:26:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:37,004 INFO L495 AbstractCegarLoop]: Abstraction has 58943 states and 92398 transitions. [2023-12-20 01:26:37,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 01:26:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 58943 states and 92398 transitions. [2023-12-20 01:26:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 01:26:37,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:37,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:26:37,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:37,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1618114638, now seen corresponding path program 1 times [2023-12-20 01:26:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:37,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192353049] [2023-12-20 01:26:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:26:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192353049] [2023-12-20 01:26:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192353049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:37,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:37,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:37,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016722857] [2023-12-20 01:26:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:37,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:37,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:37,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:37,060 INFO L87 Difference]: Start difference. First operand 58943 states and 92398 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 01:26:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:37,967 INFO L93 Difference]: Finished difference Result 127659 states and 200867 transitions. [2023-12-20 01:26:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 01:26:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:38,125 INFO L225 Difference]: With dead ends: 127659 [2023-12-20 01:26:38,125 INFO L226 Difference]: Without dead ends: 99801 [2023-12-20 01:26:38,152 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 01:26:38,153 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 81 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:38,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 348 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99801 states. [2023-12-20 01:26:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99801 to 99523. [2023-12-20 01:26:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99523 states, 99522 states have (on average 1.5675328068165832) internal successors, (156004), 99522 states have internal predecessors, (156004), 0 states have call successors, (0), 0 states 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 01:26:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99523 states to 99523 states and 156004 transitions. [2023-12-20 01:26:40,144 INFO L78 Accepts]: Start accepts. Automaton has 99523 states and 156004 transitions. Word has length 100 [2023-12-20 01:26:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:40,145 INFO L495 AbstractCegarLoop]: Abstraction has 99523 states and 156004 transitions. [2023-12-20 01:26:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 01:26:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 99523 states and 156004 transitions. [2023-12-20 01:26:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:26:40,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:40,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:40,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:26:40,148 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:40,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 670529826, now seen corresponding path program 1 times [2023-12-20 01:26:40,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:40,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122943079] [2023-12-20 01:26:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:40,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:26:40,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:40,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122943079] [2023-12-20 01:26:40,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122943079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:40,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:40,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383422332] [2023-12-20 01:26:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:40,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:40,213 INFO L87 Difference]: Start difference. First operand 99523 states and 156004 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 01:26:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:41,714 INFO L93 Difference]: Finished difference Result 213671 states and 335831 transitions. [2023-12-20 01:26:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 01:26:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:42,073 INFO L225 Difference]: With dead ends: 213671 [2023-12-20 01:26:42,073 INFO L226 Difference]: Without dead ends: 157801 [2023-12-20 01:26:42,122 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 01:26:42,122 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 81 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:42,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 346 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157801 states. [2023-12-20 01:26:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157801 to 157398. [2023-12-20 01:26:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157398 states, 157397 states have (on average 1.5670883180746773) internal successors, (246655), 157397 states have internal predecessors, (246655), 0 states have call successors, (0), 0 states 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 01:26:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157398 states to 157398 states and 246655 transitions. [2023-12-20 01:26:45,156 INFO L78 Accepts]: Start accepts. Automaton has 157398 states and 246655 transitions. Word has length 101 [2023-12-20 01:26:45,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:45,156 INFO L495 AbstractCegarLoop]: Abstraction has 157398 states and 246655 transitions. [2023-12-20 01:26:45,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 01:26:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 157398 states and 246655 transitions. [2023-12-20 01:26:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:26:45,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:45,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:26:45,159 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:45,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1950393504, now seen corresponding path program 1 times [2023-12-20 01:26:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:45,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343539819] [2023-12-20 01:26:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:26:45,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:45,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343539819] [2023-12-20 01:26:45,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343539819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:45,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:45,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:26:45,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500490686] [2023-12-20 01:26:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:26:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:45,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:26:45,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:45,243 INFO L87 Difference]: Start difference. First operand 157398 states and 246655 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 01:26:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:47,588 INFO L93 Difference]: Finished difference Result 263009 states and 413428 transitions. [2023-12-20 01:26:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:26:47,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 01:26:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:47,966 INFO L225 Difference]: With dead ends: 263009 [2023-12-20 01:26:47,967 INFO L226 Difference]: Without dead ends: 205421 [2023-12-20 01:26:48,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:26:48,030 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 191 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:48,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 639 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205421 states. [2023-12-20 01:26:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205421 to 193098. [2023-12-20 01:26:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193098 states, 193097 states have (on average 1.5641465170354796) internal successors, (302032), 193097 states have internal predecessors, (302032), 0 states have call successors, (0), 0 states 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 01:26:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193098 states to 193098 states and 302032 transitions. [2023-12-20 01:26:51,870 INFO L78 Accepts]: Start accepts. Automaton has 193098 states and 302032 transitions. Word has length 101 [2023-12-20 01:26:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:26:51,870 INFO L495 AbstractCegarLoop]: Abstraction has 193098 states and 302032 transitions. [2023-12-20 01:26:51,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 01:26:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 193098 states and 302032 transitions. [2023-12-20 01:26:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:26:51,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:26:51,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:26:51,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:26:51,897 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:26:51,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:26:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1386232415, now seen corresponding path program 1 times [2023-12-20 01:26:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:26:51,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126336428] [2023-12-20 01:26:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:26:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:26:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:26:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:26:51,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:26:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126336428] [2023-12-20 01:26:51,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126336428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:26:51,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:26:51,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:26:51,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225889279] [2023-12-20 01:26:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:26:51,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:26:51,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:26:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:26:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:26:51,942 INFO L87 Difference]: Start difference. First operand 193098 states and 302032 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:26:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:26:55,855 INFO L93 Difference]: Finished difference Result 574916 states and 897387 transitions. [2023-12-20 01:26:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:26:55,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 01:26:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:26:56,590 INFO L225 Difference]: With dead ends: 574916 [2023-12-20 01:26:56,590 INFO L226 Difference]: Without dead ends: 381888 [2023-12-20 01:26:56,718 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 01:26:56,726 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 144 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:26:56,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 448 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:26:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381888 states. [2023-12-20 01:27:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381888 to 381886. [2023-12-20 01:27:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381886 states, 381885 states have (on average 1.5479895780143236) internal successors, (591154), 381885 states have internal predecessors, (591154), 0 states have call successors, (0), 0 states 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 01:27:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381886 states to 381886 states and 591154 transitions. [2023-12-20 01:27:04,948 INFO L78 Accepts]: Start accepts. Automaton has 381886 states and 591154 transitions. Word has length 101 [2023-12-20 01:27:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:04,949 INFO L495 AbstractCegarLoop]: Abstraction has 381886 states and 591154 transitions. [2023-12-20 01:27:04,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 381886 states and 591154 transitions. [2023-12-20 01:27:04,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 01:27:04,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:04,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:04,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:27:04,952 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:04,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash -939013435, now seen corresponding path program 1 times [2023-12-20 01:27:04,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490639951] [2023-12-20 01:27:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:04,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:05,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:05,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490639951] [2023-12-20 01:27:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490639951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:05,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722091480] [2023-12-20 01:27:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:05,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:05,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:05,006 INFO L87 Difference]: Start difference. First operand 381886 states and 591154 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:14,776 INFO L93 Difference]: Finished difference Result 1137274 states and 1756780 transitions. [2023-12-20 01:27:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 01:27:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:16,759 INFO L225 Difference]: With dead ends: 1137274 [2023-12-20 01:27:16,759 INFO L226 Difference]: Without dead ends: 755504 [2023-12-20 01:27:17,052 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 01:27:17,054 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 125 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:17,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 422 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755504 states. [2023-12-20 01:27:29,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755504 to 755502. [2023-12-20 01:27:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755502 states, 755501 states have (on average 1.5321462182048733) internal successors, (1157538), 755501 states have internal predecessors, (1157538), 0 states have call successors, (0), 0 states 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 01:27:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755502 states to 755502 states and 1157538 transitions. [2023-12-20 01:27:33,991 INFO L78 Accepts]: Start accepts. Automaton has 755502 states and 1157538 transitions. Word has length 101 [2023-12-20 01:27:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:27:33,992 INFO L495 AbstractCegarLoop]: Abstraction has 755502 states and 1157538 transitions. [2023-12-20 01:27:33,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:27:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 755502 states and 1157538 transitions. [2023-12-20 01:27:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 01:27:33,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:27:33,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:27:33,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:27:33,996 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:27:33,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:27:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2098667989, now seen corresponding path program 1 times [2023-12-20 01:27:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:27:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487714603] [2023-12-20 01:27:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:27:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:27:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:27:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:27:34,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:27:34,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487714603] [2023-12-20 01:27:34,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487714603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:27:34,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:27:34,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:27:34,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572965981] [2023-12-20 01:27:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:27:34,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:27:34,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:27:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:27:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:27:34,046 INFO L87 Difference]: Start difference. First operand 755502 states and 1157538 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 01:27:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:27:44,870 INFO L93 Difference]: Finished difference Result 1128958 states and 1723416 transitions. [2023-12-20 01:27:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:27:44,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-20 01:27:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:27:46,824 INFO L225 Difference]: With dead ends: 1128958 [2023-12-20 01:27:46,824 INFO L226 Difference]: Without dead ends: 755615 [2023-12-20 01:27:47,118 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 01:27:47,119 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 132 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:27:47,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 530 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:27:47,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755615 states. [2023-12-20 01:28:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755615 to 755613. [2023-12-20 01:28:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755613 states, 755612 states have (on average 1.5207341863284332) internal successors, (1149085), 755612 states have internal predecessors, (1149085), 0 states have call successors, (0), 0 states 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 01:28:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755613 states to 755613 states and 1149085 transitions. [2023-12-20 01:28:06,628 INFO L78 Accepts]: Start accepts. Automaton has 755613 states and 1149085 transitions. Word has length 102 [2023-12-20 01:28:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:28:06,628 INFO L495 AbstractCegarLoop]: Abstraction has 755613 states and 1149085 transitions. [2023-12-20 01:28:06,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 01:28:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 755613 states and 1149085 transitions. [2023-12-20 01:28:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 01:28:06,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:28:06,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:28:06,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:28:06,634 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:28:06,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:28:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -81068579, now seen corresponding path program 1 times [2023-12-20 01:28:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:28:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619391347] [2023-12-20 01:28:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:28:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:28:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:28:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 01:28:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:28:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619391347] [2023-12-20 01:28:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619391347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:28:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:28:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:28:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550375690] [2023-12-20 01:28:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:28:06,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:28:06,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:28:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:28:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:28:06,743 INFO L87 Difference]: Start difference. First operand 755613 states and 1149085 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)