/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-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 02:30:21,641 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 02:30:21,715 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 02:30:21,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 02:30:21,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 02:30:21,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 02:30:21,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 02:30:21,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 02:30:21,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 02:30:21,748 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 02:30:21,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 02:30:21,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 02:30:21,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 02:30:21,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 02:30:21,751 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 02:30:21,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 02:30:21,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 02:30:21,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 02:30:21,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 02:30:21,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 02:30:21,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 02:30:21,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 02:30:21,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 02:30:21,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 02:30:21,754 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 02:30:21,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 02:30:21,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 02:30:21,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 02:30:21,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 02:30:21,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 02:30:21,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 02:30:21,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 02:30:21,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:30:21,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 02:30:21,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 02:30:21,756 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 02:30:21,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 02:30:21,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 02:30:21,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 02:30:21,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 02:30:21,757 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 02:30:21,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 02:30:21,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 02:30:21,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 02:30:21,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 02:30:21,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 02:30:21,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 02:30:21,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 02:30:21,993 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 02:30:21,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 02:30:23,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 02:30:23,270 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 02:30:23,271 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 02:30:23,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791b533b7/8416443f9c314e619ce353258ee842e3/FLAG8279d020e [2023-12-20 02:30:23,295 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791b533b7/8416443f9c314e619ce353258ee842e3 [2023-12-20 02:30:23,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 02:30:23,298 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 02:30:23,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 02:30:23,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 02:30:23,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 02:30:23,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74823878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23, skipping insertion in model container [2023-12-20 02:30:23,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,350 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 02:30:23,492 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-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2023-12-20 02:30:23,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:30:23,544 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 02:30:23,582 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-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2023-12-20 02:30:23,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:30:23,636 INFO L206 MainTranslator]: Completed translation [2023-12-20 02:30:23,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23 WrapperNode [2023-12-20 02:30:23,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 02:30:23,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 02:30:23,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 02:30:23,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 02:30:23,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,717 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 625 [2023-12-20 02:30:23,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 02:30:23,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 02:30:23,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 02:30:23,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 02:30:23,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,743 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 02:30:23,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 02:30:23,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 02:30:23,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 02:30:23,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 02:30:23,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (1/1) ... [2023-12-20 02:30:23,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:30:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:30:23,787 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 02:30:23,824 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 02:30:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 02:30:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 02:30:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 02:30:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 02:30:23,986 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 02:30:24,002 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 02:30:24,419 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 02:30:24,442 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 02:30:24,442 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 02:30:24,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:30:24 BoogieIcfgContainer [2023-12-20 02:30:24,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 02:30:24,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 02:30:24,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 02:30:24,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 02:30:24,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:30:23" (1/3) ... [2023-12-20 02:30:24,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703907a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:30:24, skipping insertion in model container [2023-12-20 02:30:24,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:30:23" (2/3) ... [2023-12-20 02:30:24,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703907a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:30:24, skipping insertion in model container [2023-12-20 02:30:24,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:30:24" (3/3) ... [2023-12-20 02:30:24,448 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 02:30:24,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 02:30:24,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 02:30:24,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 02:30:24,500 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;@1e544660, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 02:30:24,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 02:30:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 137 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 02:30:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 02:30:24,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:24,510 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] [2023-12-20 02:30:24,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:24,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1083985671, now seen corresponding path program 1 times [2023-12-20 02:30:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088240385] [2023-12-20 02:30:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:24,850 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 02:30:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088240385] [2023-12-20 02:30:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088240385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:24,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117574730] [2023-12-20 02:30:24,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:24,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:24,887 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 137 states have internal predecessors, (241), 0 states have call successors, (0), 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 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 02:30:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:24,973 INFO L93 Difference]: Finished difference Result 299 states and 508 transitions. [2023-12-20 02:30:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:24,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-20 02:30:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:24,985 INFO L225 Difference]: With dead ends: 299 [2023-12-20 02:30:24,985 INFO L226 Difference]: Without dead ends: 210 [2023-12-20 02:30:24,987 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 02:30:24,990 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 137 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:24,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:30:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-20 02:30:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2023-12-20 02:30:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.5825242718446602) internal successors, (326), 206 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 02:30:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 326 transitions. [2023-12-20 02:30:25,025 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 326 transitions. Word has length 55 [2023-12-20 02:30:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:25,025 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 326 transitions. [2023-12-20 02:30:25,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 02:30:25,026 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 326 transitions. [2023-12-20 02:30:25,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 02:30:25,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:25,028 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 02:30:25,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 02:30:25,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:25,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash 279150516, now seen corresponding path program 1 times [2023-12-20 02:30:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320397400] [2023-12-20 02:30:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:25,114 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 02:30:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320397400] [2023-12-20 02:30:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320397400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:25,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:25,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94765060] [2023-12-20 02:30:25,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:25,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:25,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:25,117 INFO L87 Difference]: Start difference. First operand 207 states and 326 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 02:30:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:25,140 INFO L93 Difference]: Finished difference Result 501 states and 810 transitions. [2023-12-20 02:30:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:25,141 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 02:30:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:25,143 INFO L225 Difference]: With dead ends: 501 [2023-12-20 02:30:25,143 INFO L226 Difference]: Without dead ends: 347 [2023-12-20 02:30:25,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:25,144 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 118 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:25,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 389 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-20 02:30:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2023-12-20 02:30:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.6023391812865497) internal successors, (548), 342 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 02:30:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 548 transitions. [2023-12-20 02:30:25,158 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 548 transitions. Word has length 57 [2023-12-20 02:30:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:25,159 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 548 transitions. [2023-12-20 02:30:25,159 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 02:30:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 548 transitions. [2023-12-20 02:30:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 02:30:25,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:25,161 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 02:30:25,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 02:30:25,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:25,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:25,162 INFO L85 PathProgramCache]: Analyzing trace with hash 378017127, now seen corresponding path program 1 times [2023-12-20 02:30:25,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:25,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882087984] [2023-12-20 02:30:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:25,223 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 02:30:25,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882087984] [2023-12-20 02:30:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882087984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:25,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:25,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142085145] [2023-12-20 02:30:25,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:25,225 INFO L87 Difference]: Start difference. First operand 343 states and 548 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 02:30:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:25,244 INFO L93 Difference]: Finished difference Result 895 states and 1450 transitions. [2023-12-20 02:30:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:25,244 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 02:30:25,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:25,246 INFO L225 Difference]: With dead ends: 895 [2023-12-20 02:30:25,246 INFO L226 Difference]: Without dead ends: 605 [2023-12-20 02:30:25,250 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 02:30:25,253 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 113 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:25,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 390 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-20 02:30:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 599. [2023-12-20 02:30:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.605351170568562) internal successors, (960), 598 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 02:30:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 960 transitions. [2023-12-20 02:30:25,280 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 960 transitions. Word has length 59 [2023-12-20 02:30:25,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:25,280 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 960 transitions. [2023-12-20 02:30:25,280 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 02:30:25,281 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 960 transitions. [2023-12-20 02:30:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 02:30:25,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:25,282 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 02:30:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 02:30:25,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:25,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash 343933908, now seen corresponding path program 1 times [2023-12-20 02:30:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:25,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13511534] [2023-12-20 02:30:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:25,364 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 02:30:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13511534] [2023-12-20 02:30:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13511534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:25,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:25,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:25,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811991383] [2023-12-20 02:30:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:25,367 INFO L87 Difference]: Start difference. First operand 599 states and 960 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 02:30:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:25,502 INFO L93 Difference]: Finished difference Result 2587 states and 4246 transitions. [2023-12-20 02:30:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 02:30:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 02:30:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:25,508 INFO L225 Difference]: With dead ends: 2587 [2023-12-20 02:30:25,509 INFO L226 Difference]: Without dead ends: 2041 [2023-12-20 02:30:25,512 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 02:30:25,517 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 855 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:25,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1310 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:30:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2023-12-20 02:30:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1076. [2023-12-20 02:30:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.6167441860465117) internal successors, (1738), 1075 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states 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 02:30:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1738 transitions. [2023-12-20 02:30:25,548 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1738 transitions. Word has length 61 [2023-12-20 02:30:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:25,549 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1738 transitions. [2023-12-20 02:30:25,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 02:30:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1738 transitions. [2023-12-20 02:30:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 02:30:25,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:25,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:25,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 02:30:25,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:25,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2009512368, now seen corresponding path program 1 times [2023-12-20 02:30:25,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:25,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061066044] [2023-12-20 02:30:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:25,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:25,686 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 02:30:25,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:25,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061066044] [2023-12-20 02:30:25,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061066044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:25,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:25,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:30:25,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161505044] [2023-12-20 02:30:25,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:25,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:30:25,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:25,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:30:25,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:30:25,688 INFO L87 Difference]: Start difference. First operand 1076 states and 1738 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:25,750 INFO L93 Difference]: Finished difference Result 3141 states and 5145 transitions. [2023-12-20 02:30:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:30:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 02:30:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:25,759 INFO L225 Difference]: With dead ends: 3141 [2023-12-20 02:30:25,760 INFO L226 Difference]: Without dead ends: 2118 [2023-12-20 02:30:25,761 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 02:30:25,764 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 404 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:25,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 707 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-12-20 02:30:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1588. [2023-12-20 02:30:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1587 states have (on average 1.6250787649653433) internal successors, (2579), 1587 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states 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 02:30:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2579 transitions. [2023-12-20 02:30:25,797 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2579 transitions. Word has length 62 [2023-12-20 02:30:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:25,798 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2579 transitions. [2023-12-20 02:30:25,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2579 transitions. [2023-12-20 02:30:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 02:30:25,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:25,800 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 02:30:25,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 02:30:25,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:25,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2107395099, now seen corresponding path program 1 times [2023-12-20 02:30:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:25,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409698437] [2023-12-20 02:30:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:25,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:25,898 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 02:30:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:25,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409698437] [2023-12-20 02:30:25,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409698437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:25,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:25,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:30:25,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565755140] [2023-12-20 02:30:25,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:25,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:30:25,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:25,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:30:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:30:25,900 INFO L87 Difference]: Start difference. First operand 1588 states and 2579 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 02:30:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:25,965 INFO L93 Difference]: Finished difference Result 4609 states and 7543 transitions. [2023-12-20 02:30:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:30:25,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 02:30:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:25,973 INFO L225 Difference]: With dead ends: 4609 [2023-12-20 02:30:25,974 INFO L226 Difference]: Without dead ends: 3074 [2023-12-20 02:30:25,976 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 02:30:25,977 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 402 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:25,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 713 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-12-20 02:30:26,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2319. [2023-12-20 02:30:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 1.624676445211389) internal successors, (3766), 2318 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states 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 02:30:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3766 transitions. [2023-12-20 02:30:26,033 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3766 transitions. Word has length 63 [2023-12-20 02:30:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:26,034 INFO L495 AbstractCegarLoop]: Abstraction has 2319 states and 3766 transitions. [2023-12-20 02:30:26,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 02:30:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3766 transitions. [2023-12-20 02:30:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:30:26,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:26,036 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 02:30:26,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 02:30:26,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:26,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:26,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2100793239, now seen corresponding path program 1 times [2023-12-20 02:30:26,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:26,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100975442] [2023-12-20 02:30:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:26,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:26,105 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 02:30:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:26,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100975442] [2023-12-20 02:30:26,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100975442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:26,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982588616] [2023-12-20 02:30:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:26,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:26,108 INFO L87 Difference]: Start difference. First operand 2319 states and 3766 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:26,132 INFO L93 Difference]: Finished difference Result 5109 states and 8341 transitions. [2023-12-20 02:30:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:26,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 02:30:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:26,141 INFO L225 Difference]: With dead ends: 5109 [2023-12-20 02:30:26,142 INFO L226 Difference]: Without dead ends: 3500 [2023-12-20 02:30:26,146 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 02:30:26,147 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 117 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:26,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 461 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2023-12-20 02:30:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3498. [2023-12-20 02:30:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 1.6219616814412354) internal successors, (5672), 3497 states have internal predecessors, (5672), 0 states have call successors, (0), 0 states 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 02:30:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5672 transitions. [2023-12-20 02:30:26,198 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5672 transitions. Word has length 64 [2023-12-20 02:30:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:26,199 INFO L495 AbstractCegarLoop]: Abstraction has 3498 states and 5672 transitions. [2023-12-20 02:30:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5672 transitions. [2023-12-20 02:30:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:30:26,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:26,200 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 02:30:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 02:30:26,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:26,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash -229150136, now seen corresponding path program 1 times [2023-12-20 02:30:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203771417] [2023-12-20 02:30:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:26,241 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 02:30:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203771417] [2023-12-20 02:30:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203771417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:26,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:26,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:26,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46117643] [2023-12-20 02:30:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:26,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:26,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:26,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:26,242 INFO L87 Difference]: Start difference. First operand 3498 states and 5672 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:26,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:26,271 INFO L93 Difference]: Finished difference Result 6916 states and 11272 transitions. [2023-12-20 02:30:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:26,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 02:30:26,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:26,284 INFO L225 Difference]: With dead ends: 6916 [2023-12-20 02:30:26,284 INFO L226 Difference]: Without dead ends: 4916 [2023-12-20 02:30:26,288 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 02:30:26,289 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 112 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:26,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2023-12-20 02:30:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 4914. [2023-12-20 02:30:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4913 states have (on average 1.618155912884185) internal successors, (7950), 4913 states have internal predecessors, (7950), 0 states have call successors, (0), 0 states 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 02:30:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 7950 transitions. [2023-12-20 02:30:26,358 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 7950 transitions. Word has length 64 [2023-12-20 02:30:26,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:26,358 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 7950 transitions. [2023-12-20 02:30:26,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 7950 transitions. [2023-12-20 02:30:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:30:26,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:26,361 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 02:30:26,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 02:30:26,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:26,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:26,362 INFO L85 PathProgramCache]: Analyzing trace with hash 851350487, now seen corresponding path program 1 times [2023-12-20 02:30:26,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:26,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249015095] [2023-12-20 02:30:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:26,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:26,410 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 02:30:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249015095] [2023-12-20 02:30:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249015095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:26,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:26,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:30:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375748593] [2023-12-20 02:30:26,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:30:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:30:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:30:26,412 INFO L87 Difference]: Start difference. First operand 4914 states and 7950 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 02:30:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:26,503 INFO L93 Difference]: Finished difference Result 15143 states and 24630 transitions. [2023-12-20 02:30:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:30:26,503 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 02:30:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:26,541 INFO L225 Difference]: With dead ends: 15143 [2023-12-20 02:30:26,542 INFO L226 Difference]: Without dead ends: 10362 [2023-12-20 02:30:26,552 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 02:30:26,554 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 400 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:26,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 581 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2023-12-20 02:30:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 7612. [2023-12-20 02:30:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7612 states, 7611 states have (on average 1.6145053212455656) internal successors, (12288), 7611 states have internal predecessors, (12288), 0 states have call successors, (0), 0 states 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 02:30:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7612 states to 7612 states and 12288 transitions. [2023-12-20 02:30:26,701 INFO L78 Accepts]: Start accepts. Automaton has 7612 states and 12288 transitions. Word has length 64 [2023-12-20 02:30:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:26,701 INFO L495 AbstractCegarLoop]: Abstraction has 7612 states and 12288 transitions. [2023-12-20 02:30:26,701 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 02:30:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 7612 states and 12288 transitions. [2023-12-20 02:30:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 02:30:26,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:26,704 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 02:30:26,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 02:30:26,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:26,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1956399438, now seen corresponding path program 1 times [2023-12-20 02:30:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:26,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428947929] [2023-12-20 02:30:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:30:26,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428947929] [2023-12-20 02:30:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428947929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:26,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573145578] [2023-12-20 02:30:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:26,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:26,748 INFO L87 Difference]: Start difference. First operand 7612 states and 12288 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:26,834 INFO L93 Difference]: Finished difference Result 16686 states and 27283 transitions. [2023-12-20 02:30:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 02:30:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:26,852 INFO L225 Difference]: With dead ends: 16686 [2023-12-20 02:30:26,852 INFO L226 Difference]: Without dead ends: 11161 [2023-12-20 02:30:26,859 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 02:30:26,860 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 122 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:26,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 487 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2023-12-20 02:30:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 11159. [2023-12-20 02:30:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11159 states, 11158 states have (on average 1.6189281233195914) internal successors, (18064), 11158 states have internal predecessors, (18064), 0 states have call successors, (0), 0 states 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 02:30:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11159 states to 11159 states and 18064 transitions. [2023-12-20 02:30:27,075 INFO L78 Accepts]: Start accepts. Automaton has 11159 states and 18064 transitions. Word has length 64 [2023-12-20 02:30:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:27,075 INFO L495 AbstractCegarLoop]: Abstraction has 11159 states and 18064 transitions. [2023-12-20 02:30:27,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 11159 states and 18064 transitions. [2023-12-20 02:30:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 02:30:27,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:27,076 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 02:30:27,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 02:30:27,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 586720488, now seen corresponding path program 1 times [2023-12-20 02:30:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:27,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793923517] [2023-12-20 02:30:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:27,197 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 02:30:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:27,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793923517] [2023-12-20 02:30:27,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793923517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:27,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:27,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:27,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139420600] [2023-12-20 02:30:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:27,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:27,199 INFO L87 Difference]: Start difference. First operand 11159 states and 18064 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 02:30:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:27,354 INFO L93 Difference]: Finished difference Result 22240 states and 36019 transitions. [2023-12-20 02:30:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:30:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 02:30:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:27,371 INFO L225 Difference]: With dead ends: 22240 [2023-12-20 02:30:27,371 INFO L226 Difference]: Without dead ends: 11161 [2023-12-20 02:30:27,383 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 02:30:27,383 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 227 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:27,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 577 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2023-12-20 02:30:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 11159. [2023-12-20 02:30:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11159 states, 11158 states have (on average 1.6077253988169924) internal successors, (17939), 11158 states have internal predecessors, (17939), 0 states have call successors, (0), 0 states 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 02:30:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11159 states to 11159 states and 17939 transitions. [2023-12-20 02:30:27,575 INFO L78 Accepts]: Start accepts. Automaton has 11159 states and 17939 transitions. Word has length 66 [2023-12-20 02:30:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:27,575 INFO L495 AbstractCegarLoop]: Abstraction has 11159 states and 17939 transitions. [2023-12-20 02:30:27,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 02:30:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 11159 states and 17939 transitions. [2023-12-20 02:30:27,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 02:30:27,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:27,575 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] [2023-12-20 02:30:27,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 02:30:27,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:27,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 719582349, now seen corresponding path program 1 times [2023-12-20 02:30:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:27,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812757192] [2023-12-20 02:30:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:27,725 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 02:30:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812757192] [2023-12-20 02:30:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812757192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:27,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:27,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982838649] [2023-12-20 02:30:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:27,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:27,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:27,727 INFO L87 Difference]: Start difference. First operand 11159 states and 17939 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 02:30:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:27,850 INFO L93 Difference]: Finished difference Result 31942 states and 51511 transitions. [2023-12-20 02:30:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:30:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-20 02:30:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:27,884 INFO L225 Difference]: With dead ends: 31942 [2023-12-20 02:30:27,884 INFO L226 Difference]: Without dead ends: 20863 [2023-12-20 02:30:27,900 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 02:30:27,901 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 223 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:27,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 581 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:27,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20863 states. [2023-12-20 02:30:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20863 to 20861. [2023-12-20 02:30:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20861 states, 20860 states have (on average 1.595973154362416) internal successors, (33292), 20860 states have internal predecessors, (33292), 0 states have call successors, (0), 0 states 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 02:30:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 33292 transitions. [2023-12-20 02:30:28,315 INFO L78 Accepts]: Start accepts. Automaton has 20861 states and 33292 transitions. Word has length 69 [2023-12-20 02:30:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:28,315 INFO L495 AbstractCegarLoop]: Abstraction has 20861 states and 33292 transitions. [2023-12-20 02:30:28,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 02:30:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 20861 states and 33292 transitions. [2023-12-20 02:30:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 02:30:28,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:28,316 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] [2023-12-20 02:30:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 02:30:28,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:28,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash 830307045, now seen corresponding path program 1 times [2023-12-20 02:30:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863935210] [2023-12-20 02:30:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:28,449 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 02:30:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863935210] [2023-12-20 02:30:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863935210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:28,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:28,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:28,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617304329] [2023-12-20 02:30:28,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:28,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:28,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:28,451 INFO L87 Difference]: Start difference. First operand 20861 states and 33292 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 02:30:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:28,629 INFO L93 Difference]: Finished difference Result 39973 states and 63514 transitions. [2023-12-20 02:30:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:30:28,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-12-20 02:30:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:28,691 INFO L225 Difference]: With dead ends: 39973 [2023-12-20 02:30:28,691 INFO L226 Difference]: Without dead ends: 39971 [2023-12-20 02:30:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:30:28,708 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 250 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 975 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:30:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39971 states. [2023-12-20 02:30:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39971 to 21585. [2023-12-20 02:30:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21585 states, 21584 states have (on average 1.575565233506301) internal successors, (34007), 21584 states have internal predecessors, (34007), 0 states have call successors, (0), 0 states 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 02:30:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21585 states to 21585 states and 34007 transitions. [2023-12-20 02:30:29,066 INFO L78 Accepts]: Start accepts. Automaton has 21585 states and 34007 transitions. Word has length 70 [2023-12-20 02:30:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:29,066 INFO L495 AbstractCegarLoop]: Abstraction has 21585 states and 34007 transitions. [2023-12-20 02:30:29,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 02:30:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 21585 states and 34007 transitions. [2023-12-20 02:30:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 02:30:29,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:29,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:29,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 02:30:29,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:29,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1291649415, now seen corresponding path program 1 times [2023-12-20 02:30:29,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881971121] [2023-12-20 02:30:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 02:30:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881971121] [2023-12-20 02:30:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881971121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:29,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:29,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983183491] [2023-12-20 02:30:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:29,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:29,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:29,237 INFO L87 Difference]: Start difference. First operand 21585 states and 34007 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:29,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:29,450 INFO L93 Difference]: Finished difference Result 52601 states and 83211 transitions. [2023-12-20 02:30:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:30:29,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 02:30:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:29,512 INFO L225 Difference]: With dead ends: 52601 [2023-12-20 02:30:29,512 INFO L226 Difference]: Without dead ends: 42409 [2023-12-20 02:30:29,540 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 02:30:29,540 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 512 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:29,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 932 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42409 states. [2023-12-20 02:30:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42409 to 33119. [2023-12-20 02:30:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33119 states, 33118 states have (on average 1.5748233588984841) internal successors, (52155), 33118 states have internal predecessors, (52155), 0 states have call successors, (0), 0 states 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 02:30:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33119 states to 33119 states and 52155 transitions. [2023-12-20 02:30:30,127 INFO L78 Accepts]: Start accepts. Automaton has 33119 states and 52155 transitions. Word has length 92 [2023-12-20 02:30:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:30,127 INFO L495 AbstractCegarLoop]: Abstraction has 33119 states and 52155 transitions. [2023-12-20 02:30:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 33119 states and 52155 transitions. [2023-12-20 02:30:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 02:30:30,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:30,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 02:30:30,130 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:30,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:30,130 INFO L85 PathProgramCache]: Analyzing trace with hash 673374506, now seen corresponding path program 1 times [2023-12-20 02:30:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:30,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472896013] [2023-12-20 02:30:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 02:30:30,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:30,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472896013] [2023-12-20 02:30:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472896013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:30,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:30,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:30,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108380275] [2023-12-20 02:30:30,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:30,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:30,352 INFO L87 Difference]: Start difference. First operand 33119 states and 52155 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 02:30:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:30,548 INFO L93 Difference]: Finished difference Result 56653 states and 89647 transitions. [2023-12-20 02:30:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:30:30,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 92 [2023-12-20 02:30:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:30,608 INFO L225 Difference]: With dead ends: 56653 [2023-12-20 02:30:30,608 INFO L226 Difference]: Without dead ends: 46461 [2023-12-20 02:30:30,631 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 02:30:30,632 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 515 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:30,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 929 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46461 states. [2023-12-20 02:30:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46461 to 44807. [2023-12-20 02:30:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44807 states, 44806 states have (on average 1.5761058786769628) internal successors, (70619), 44806 states have internal predecessors, (70619), 0 states have call successors, (0), 0 states 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 02:30:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44807 states to 44807 states and 70619 transitions. [2023-12-20 02:30:31,436 INFO L78 Accepts]: Start accepts. Automaton has 44807 states and 70619 transitions. Word has length 92 [2023-12-20 02:30:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:31,436 INFO L495 AbstractCegarLoop]: Abstraction has 44807 states and 70619 transitions. [2023-12-20 02:30:31,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 02:30:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 44807 states and 70619 transitions. [2023-12-20 02:30:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 02:30:31,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:31,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 02:30:31,439 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:31,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1436043216, now seen corresponding path program 1 times [2023-12-20 02:30:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634060824] [2023-12-20 02:30:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 02:30:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634060824] [2023-12-20 02:30:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634060824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:31,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:30:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289005149] [2023-12-20 02:30:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:30:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:30:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:30:31,526 INFO L87 Difference]: Start difference. First operand 44807 states and 70619 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 02:30:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:31,773 INFO L93 Difference]: Finished difference Result 63523 states and 100707 transitions. [2023-12-20 02:30:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:30:31,774 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 92 [2023-12-20 02:30:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:31,951 INFO L225 Difference]: With dead ends: 63523 [2023-12-20 02:30:31,951 INFO L226 Difference]: Without dead ends: 53101 [2023-12-20 02:30:31,966 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 02:30:31,967 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 509 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:31,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1025 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53101 states. [2023-12-20 02:30:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53101 to 51447. [2023-12-20 02:30:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51447 states, 51446 states have (on average 1.579112078684446) internal successors, (81239), 51446 states have internal predecessors, (81239), 0 states have call successors, (0), 0 states 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 02:30:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51447 states to 51447 states and 81239 transitions. [2023-12-20 02:30:32,568 INFO L78 Accepts]: Start accepts. Automaton has 51447 states and 81239 transitions. Word has length 92 [2023-12-20 02:30:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:32,568 INFO L495 AbstractCegarLoop]: Abstraction has 51447 states and 81239 transitions. [2023-12-20 02:30:32,568 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 02:30:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 51447 states and 81239 transitions. [2023-12-20 02:30:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:30:32,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:32,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:32,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 02:30:32,570 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:32,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1630170924, now seen corresponding path program 1 times [2023-12-20 02:30:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:32,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515997585] [2023-12-20 02:30:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:32,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 02:30:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:32,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515997585] [2023-12-20 02:30:32,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515997585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:32,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:32,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:30:32,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421728876] [2023-12-20 02:30:32,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:32,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:30:32,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:30:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:30:32,643 INFO L87 Difference]: Start difference. First operand 51447 states and 81239 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:33,036 INFO L93 Difference]: Finished difference Result 83820 states and 133088 transitions. [2023-12-20 02:30:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:30:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 02:30:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:33,136 INFO L225 Difference]: With dead ends: 83820 [2023-12-20 02:30:33,137 INFO L226 Difference]: Without dead ends: 66758 [2023-12-20 02:30:33,170 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 02:30:33,170 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 230 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:33,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 663 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:30:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66758 states. [2023-12-20 02:30:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66758 to 65106. [2023-12-20 02:30:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65106 states, 65105 states have (on average 1.5796175408954765) internal successors, (102841), 65105 states have internal predecessors, (102841), 0 states have call successors, (0), 0 states 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 02:30:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65106 states to 65106 states and 102841 transitions. [2023-12-20 02:30:34,122 INFO L78 Accepts]: Start accepts. Automaton has 65106 states and 102841 transitions. Word has length 93 [2023-12-20 02:30:34,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:34,122 INFO L495 AbstractCegarLoop]: Abstraction has 65106 states and 102841 transitions. [2023-12-20 02:30:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 65106 states and 102841 transitions. [2023-12-20 02:30:34,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 02:30:34,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:34,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:34,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 02:30:34,124 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:34,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:34,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1430700236, now seen corresponding path program 1 times [2023-12-20 02:30:34,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:34,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215366016] [2023-12-20 02:30:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:34,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 02:30:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215366016] [2023-12-20 02:30:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215366016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689419672] [2023-12-20 02:30:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:34,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:34,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:34,162 INFO L87 Difference]: Start difference. First operand 65106 states and 102841 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:34,634 INFO L93 Difference]: Finished difference Result 140451 states and 222733 transitions. [2023-12-20 02:30:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 02:30:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:34,809 INFO L225 Difference]: With dead ends: 140451 [2023-12-20 02:30:34,809 INFO L226 Difference]: Without dead ends: 109891 [2023-12-20 02:30:34,859 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 02:30:34,860 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 103 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:34,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 384 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109891 states. [2023-12-20 02:30:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109891 to 109613. [2023-12-20 02:30:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109613 states, 109612 states have (on average 1.5803014268510747) internal successors, (173220), 109612 states have internal predecessors, (173220), 0 states have call successors, (0), 0 states 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 02:30:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109613 states to 109613 states and 173220 transitions. [2023-12-20 02:30:36,547 INFO L78 Accepts]: Start accepts. Automaton has 109613 states and 173220 transitions. Word has length 93 [2023-12-20 02:30:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:36,548 INFO L495 AbstractCegarLoop]: Abstraction has 109613 states and 173220 transitions. [2023-12-20 02:30:36,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 109613 states and 173220 transitions. [2023-12-20 02:30:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 02:30:36,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:36,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:36,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 02:30:36,551 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:36,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2025115264, now seen corresponding path program 1 times [2023-12-20 02:30:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431383169] [2023-12-20 02:30:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 02:30:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431383169] [2023-12-20 02:30:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431383169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:36,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:36,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:30:36,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082990637] [2023-12-20 02:30:36,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:36,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:30:36,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:36,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:30:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:30:36,616 INFO L87 Difference]: Start difference. First operand 109613 states and 173220 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) [2023-12-20 02:30:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:37,331 INFO L93 Difference]: Finished difference Result 167652 states and 265951 transitions. [2023-12-20 02:30:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:30:37,331 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 94 [2023-12-20 02:30:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:37,561 INFO L225 Difference]: With dead ends: 167652 [2023-12-20 02:30:37,561 INFO L226 Difference]: Without dead ends: 136008 [2023-12-20 02:30:37,622 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 02:30:37,623 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:37,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 657 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136008 states. [2023-12-20 02:30:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136008 to 129428. [2023-12-20 02:30:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129428 states, 129427 states have (on average 1.5792068115617297) internal successors, (204392), 129427 states have internal predecessors, (204392), 0 states have call successors, (0), 0 states 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 02:30:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129428 states to 129428 states and 204392 transitions. [2023-12-20 02:30:39,928 INFO L78 Accepts]: Start accepts. Automaton has 129428 states and 204392 transitions. Word has length 94 [2023-12-20 02:30:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:39,929 INFO L495 AbstractCegarLoop]: Abstraction has 129428 states and 204392 transitions. [2023-12-20 02:30:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-12-20 02:30:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 129428 states and 204392 transitions. [2023-12-20 02:30:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 02:30:39,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:39,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 02:30:39,945 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:39,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:39,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1718673077, now seen corresponding path program 1 times [2023-12-20 02:30:39,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092071804] [2023-12-20 02:30:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 02:30:40,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:40,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092071804] [2023-12-20 02:30:40,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092071804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:40,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:40,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:40,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914898381] [2023-12-20 02:30:40,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:40,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:40,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:40,007 INFO L87 Difference]: Start difference. First operand 129428 states and 204392 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:41,013 INFO L93 Difference]: Finished difference Result 273651 states and 433258 transitions. [2023-12-20 02:30:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 02:30:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:41,509 INFO L225 Difference]: With dead ends: 273651 [2023-12-20 02:30:41,509 INFO L226 Difference]: Without dead ends: 212559 [2023-12-20 02:30:41,618 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 02:30:41,620 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 103 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:41,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 383 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212559 states. [2023-12-20 02:30:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212559 to 212029. [2023-12-20 02:30:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212029 states, 212028 states have (on average 1.5781453392948102) internal successors, (334611), 212028 states have internal predecessors, (334611), 0 states have call successors, (0), 0 states 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 02:30:45,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212029 states to 212029 states and 334611 transitions. [2023-12-20 02:30:45,281 INFO L78 Accepts]: Start accepts. Automaton has 212029 states and 334611 transitions. Word has length 94 [2023-12-20 02:30:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:45,281 INFO L495 AbstractCegarLoop]: Abstraction has 212029 states and 334611 transitions. [2023-12-20 02:30:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:30:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 212029 states and 334611 transitions. [2023-12-20 02:30:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 02:30:45,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:45,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:45,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 02:30:45,284 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:45,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash -754923130, now seen corresponding path program 1 times [2023-12-20 02:30:45,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:45,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278683563] [2023-12-20 02:30:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:45,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:30:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278683563] [2023-12-20 02:30:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278683563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007089974] [2023-12-20 02:30:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:45,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:45,325 INFO L87 Difference]: Start difference. First operand 212029 states and 334611 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 02:30:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:30:47,582 INFO L93 Difference]: Finished difference Result 625230 states and 986600 transitions. [2023-12-20 02:30:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:30:47,583 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 94 [2023-12-20 02:30:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:30:48,861 INFO L225 Difference]: With dead ends: 625230 [2023-12-20 02:30:48,861 INFO L226 Difference]: Without dead ends: 413270 [2023-12-20 02:30:48,944 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 02:30:48,944 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 142 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:30:48,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 470 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:30:49,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413270 states. [2023-12-20 02:30:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413270 to 413268. [2023-12-20 02:30:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413268 states, 413267 states have (on average 1.567901622921743) internal successors, (647962), 413267 states have internal predecessors, (647962), 0 states have call successors, (0), 0 states 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 02:30:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413268 states to 413268 states and 647962 transitions. [2023-12-20 02:30:55,640 INFO L78 Accepts]: Start accepts. Automaton has 413268 states and 647962 transitions. Word has length 94 [2023-12-20 02:30:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:30:55,640 INFO L495 AbstractCegarLoop]: Abstraction has 413268 states and 647962 transitions. [2023-12-20 02:30:55,640 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 02:30:55,641 INFO L276 IsEmpty]: Start isEmpty. Operand 413268 states and 647962 transitions. [2023-12-20 02:30:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 02:30:55,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:30:55,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:30:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 02:30:55,660 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:30:55,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:30:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1296747900, now seen corresponding path program 1 times [2023-12-20 02:30:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:30:55,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744131158] [2023-12-20 02:30:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:30:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:30:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:30:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:30:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:30:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744131158] [2023-12-20 02:30:55,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744131158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:30:55,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:30:55,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:30:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352539427] [2023-12-20 02:30:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:30:55,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:30:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:30:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:30:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:30:55,718 INFO L87 Difference]: Start difference. First operand 413268 states and 647962 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 02:31:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:31:01,045 INFO L93 Difference]: Finished difference Result 1216712 states and 1907367 transitions. [2023-12-20 02:31:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:31:01,048 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 94 [2023-12-20 02:31:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:31:02,986 INFO L225 Difference]: With dead ends: 1216712 [2023-12-20 02:31:02,986 INFO L226 Difference]: Without dead ends: 803580 [2023-12-20 02:31:03,210 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 02:31:03,211 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 160 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:31:03,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 504 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:31:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803580 states. [2023-12-20 02:31:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803580 to 803578. [2023-12-20 02:31:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803578 states, 803577 states have (on average 1.5567767619033397) internal successors, (1250990), 803577 states have internal predecessors, (1250990), 0 states have call successors, (0), 0 states 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 02:31:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803578 states to 803578 states and 1250990 transitions. [2023-12-20 02:31:16,188 INFO L78 Accepts]: Start accepts. Automaton has 803578 states and 1250990 transitions. Word has length 94 [2023-12-20 02:31:16,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:31:16,188 INFO L495 AbstractCegarLoop]: Abstraction has 803578 states and 1250990 transitions. [2023-12-20 02:31:16,188 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 02:31:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 803578 states and 1250990 transitions. [2023-12-20 02:31:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 02:31:16,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:31:16,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:31:16,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 02:31:16,193 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:31:16,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:31:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash 512047491, now seen corresponding path program 1 times [2023-12-20 02:31:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:31:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072791778] [2023-12-20 02:31:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:31:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:31:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:31:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:31:16,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:31:16,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072791778] [2023-12-20 02:31:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072791778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:31:16,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:31:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:31:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883537487] [2023-12-20 02:31:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:31:16,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:31:16,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:31:16,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:31:16,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:31:16,270 INFO L87 Difference]: Start difference. First operand 803578 states and 1250990 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:31:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:31:23,269 INFO L93 Difference]: Finished difference Result 1549026 states and 2415398 transitions. [2023-12-20 02:31:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:31:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 02:31:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:31:25,700 INFO L225 Difference]: With dead ends: 1549026 [2023-12-20 02:31:25,700 INFO L226 Difference]: Without dead ends: 745708 [2023-12-20 02:31:26,114 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 02:31:26,115 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 96 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:31:26,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 449 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:31:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745708 states. [2023-12-20 02:31:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745708 to 745706. [2023-12-20 02:31:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745706 states, 745705 states have (on average 1.5517154907101334) internal successors, (1157122), 745705 states have internal predecessors, (1157122), 0 states have call successors, (0), 0 states 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 02:31:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745706 states to 745706 states and 1157122 transitions. [2023-12-20 02:31:39,317 INFO L78 Accepts]: Start accepts. Automaton has 745706 states and 1157122 transitions. Word has length 95 [2023-12-20 02:31:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:31:39,317 INFO L495 AbstractCegarLoop]: Abstraction has 745706 states and 1157122 transitions. [2023-12-20 02:31:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:31:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 745706 states and 1157122 transitions. [2023-12-20 02:31:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 02:31:39,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:31:39,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:31:39,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 02:31:39,321 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:31:39,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:31:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 468528571, now seen corresponding path program 1 times [2023-12-20 02:31:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:31:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917471314] [2023-12-20 02:31:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:31:39,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:31:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:31:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:31:39,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:31:39,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917471314] [2023-12-20 02:31:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917471314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:31:39,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:31:39,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:31:39,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379006026] [2023-12-20 02:31:39,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:31:39,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:31:39,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:31:39,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:31:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:31:39,446 INFO L87 Difference]: Start difference. First operand 745706 states and 1157122 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:31:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:31:43,968 INFO L93 Difference]: Finished difference Result 1055367 states and 1640301 transitions. [2023-12-20 02:31:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:31:43,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 02:31:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:31:45,445 INFO L225 Difference]: With dead ends: 1055367 [2023-12-20 02:31:45,445 INFO L226 Difference]: Without dead ends: 310021 [2023-12-20 02:31:45,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:31:45,865 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 70 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:31:45,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 418 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:31:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310021 states. [2023-12-20 02:31:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310021 to 310019. [2023-12-20 02:31:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310019 states, 310018 states have (on average 1.549532607784064) internal successors, (480383), 310018 states have internal predecessors, (480383), 0 states have call successors, (0), 0 states 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 02:31:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310019 states to 310019 states and 480383 transitions. [2023-12-20 02:31:51,689 INFO L78 Accepts]: Start accepts. Automaton has 310019 states and 480383 transitions. Word has length 95 [2023-12-20 02:31:51,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:31:51,689 INFO L495 AbstractCegarLoop]: Abstraction has 310019 states and 480383 transitions. [2023-12-20 02:31:51,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:31:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 310019 states and 480383 transitions. [2023-12-20 02:31:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 02:31:51,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:31:51,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:31:51,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 02:31:51,692 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:31:51,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:31:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1861414804, now seen corresponding path program 1 times [2023-12-20 02:31:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:31:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807606221] [2023-12-20 02:31:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:31:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:31:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:31:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:31:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:31:51,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807606221] [2023-12-20 02:31:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807606221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:31:51,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:31:51,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:31:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244830562] [2023-12-20 02:31:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:31:51,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:31:51,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:31:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:31:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:31:51,810 INFO L87 Difference]: Start difference. First operand 310019 states and 480383 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)