/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:24:34,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:24:34,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:24:34,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:24:34,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:24:34,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:24:34,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:24:34,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:24:34,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:24:34,583 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:24:34,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:24:34,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:24:34,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:24:34,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:24:34,585 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:24:34,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:24:34,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:24:34,586 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:24:34,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:24:34,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:24:34,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:24:34,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:24:34,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:24:34,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:24:34,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:24:34,588 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:24:34,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:24:34,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:24:34,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:24:34,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:24:34,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:24:34,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:24:34,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:24:34,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:24:34,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:24:34,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:24:34,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:24:34,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:24:34,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:24:34,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:24:34,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:24:34,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:24:34,811 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:24:34,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 14:24:35,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:24:36,050 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:24:36,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 14:24:36,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/943b3c6b4/404d83262ad8479c89c2fdedb5a8eb25/FLAG4f1035fe3 [2023-12-21 14:24:36,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/943b3c6b4/404d83262ad8479c89c2fdedb5a8eb25 [2023-12-21 14:24:36,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:24:36,086 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:24:36,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:24:36,090 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:24:36,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:24:36,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5643ff54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36, skipping insertion in model container [2023-12-21 14:24:36,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:24:36,367 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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2023-12-21 14:24:36,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:24:36,431 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:24:36,538 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_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[13338,13351] [2023-12-21 14:24:36,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:24:36,598 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:24:36,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36 WrapperNode [2023-12-21 14:24:36,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:24:36,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:24:36,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:24:36,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:24:36,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,665 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1391 [2023-12-21 14:24:36,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:24:36,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:24:36,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:24:36,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:24:36,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,723 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]. [2023-12-21 14:24:36,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:24:36,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:24:36,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:24:36,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:24:36,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (1/1) ... [2023-12-21 14:24:36,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:24:36,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:24:36,849 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) [2023-12-21 14:24:36,875 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 [2023-12-21 14:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:24:36,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:24:36,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:24:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:24:37,070 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:24:37,072 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:24:37,834 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:24:37,896 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:24:37,896 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:24:37,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:24:37 BoogieIcfgContainer [2023-12-21 14:24:37,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:24:37,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:24:37,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:24:37,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:24:37,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:24:36" (1/3) ... [2023-12-21 14:24:37,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6ba9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:24:37, skipping insertion in model container [2023-12-21 14:24:37,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:24:36" (2/3) ... [2023-12-21 14:24:37,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6ba9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:24:37, skipping insertion in model container [2023-12-21 14:24:37,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:24:37" (3/3) ... [2023-12-21 14:24:37,903 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-12-21 14:24:37,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:24:37,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:24:37,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:24:37,956 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;@5c0c90c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:24:37,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:24:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 326 states have (on average 1.794478527607362) internal successors, (585), 327 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:37,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 14:24:37,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:37,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:37,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:37,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash -191587502, now seen corresponding path program 1 times [2023-12-21 14:24:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:37,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278329486] [2023-12-21 14:24:37,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:37,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278329486] [2023-12-21 14:24:38,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278329486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:38,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:38,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003608755] [2023-12-21 14:24:38,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:38,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:38,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:38,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,473 INFO L87 Difference]: Start difference. First operand has 328 states, 326 states have (on average 1.794478527607362) internal successors, (585), 327 states have internal predecessors, (585), 0 states have call successors, (0), 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 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:38,569 INFO L93 Difference]: Finished difference Result 612 states and 1063 transitions. [2023-12-21 14:24:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-21 14:24:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:38,586 INFO L225 Difference]: With dead ends: 612 [2023-12-21 14:24:38,586 INFO L226 Difference]: Without dead ends: 460 [2023-12-21 14:24:38,591 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 [2023-12-21 14:24:38,594 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 243 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:38,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1100 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-21 14:24:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2023-12-21 14:24:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.676148796498906) internal successors, (766), 457 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 766 transitions. [2023-12-21 14:24:38,641 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 766 transitions. Word has length 105 [2023-12-21 14:24:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:38,641 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 766 transitions. [2023-12-21 14:24:38,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 766 transitions. [2023-12-21 14:24:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 14:24:38,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:38,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:38,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:24:38,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:38,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1529750818, now seen corresponding path program 1 times [2023-12-21 14:24:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:38,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926088515] [2023-12-21 14:24:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:38,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:38,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926088515] [2023-12-21 14:24:38,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926088515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:38,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:38,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:38,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706663680] [2023-12-21 14:24:38,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:38,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:38,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:38,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,802 INFO L87 Difference]: Start difference. First operand 458 states and 766 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:38,819 INFO L93 Difference]: Finished difference Result 994 states and 1662 transitions. [2023-12-21 14:24:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:38,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 14:24:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:38,822 INFO L225 Difference]: With dead ends: 994 [2023-12-21 14:24:38,822 INFO L226 Difference]: Without dead ends: 716 [2023-12-21 14:24:38,823 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 [2023-12-21 14:24:38,824 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 218 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:38,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1061 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2023-12-21 14:24:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2023-12-21 14:24:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 1.673211781206171) internal successors, (1193), 713 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1193 transitions. [2023-12-21 14:24:38,848 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1193 transitions. Word has length 108 [2023-12-21 14:24:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:38,848 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 1193 transitions. [2023-12-21 14:24:38,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1193 transitions. [2023-12-21 14:24:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 14:24:38,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:38,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:38,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:24:38,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:38,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:38,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2110494033, now seen corresponding path program 1 times [2023-12-21 14:24:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861874127] [2023-12-21 14:24:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861874127] [2023-12-21 14:24:38,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861874127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:38,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755868695] [2023-12-21 14:24:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:38,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:38,990 INFO L87 Difference]: Start difference. First operand 714 states and 1193 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:39,008 INFO L93 Difference]: Finished difference Result 1742 states and 2907 transitions. [2023-12-21 14:24:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-12-21 14:24:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:39,015 INFO L225 Difference]: With dead ends: 1742 [2023-12-21 14:24:39,015 INFO L226 Difference]: Without dead ends: 1208 [2023-12-21 14:24:39,017 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 [2023-12-21 14:24:39,018 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 211 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:39,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1062 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2023-12-21 14:24:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2023-12-21 14:24:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 1.6672199170124482) internal successors, (2009), 1205 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2009 transitions. [2023-12-21 14:24:39,041 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2009 transitions. Word has length 111 [2023-12-21 14:24:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:39,046 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2009 transitions. [2023-12-21 14:24:39,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2009 transitions. [2023-12-21 14:24:39,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 14:24:39,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:39,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:24:39,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:39,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash -332455563, now seen corresponding path program 1 times [2023-12-21 14:24:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674721566] [2023-12-21 14:24:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:39,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674721566] [2023-12-21 14:24:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674721566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:39,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042776341] [2023-12-21 14:24:39,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:39,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:39,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:39,209 INFO L87 Difference]: Start difference. First operand 1206 states and 2009 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:39,245 INFO L93 Difference]: Finished difference Result 3178 states and 5283 transitions. [2023-12-21 14:24:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:39,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-12-21 14:24:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:39,254 INFO L225 Difference]: With dead ends: 3178 [2023-12-21 14:24:39,254 INFO L226 Difference]: Without dead ends: 2152 [2023-12-21 14:24:39,258 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 [2023-12-21 14:24:39,267 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 204 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:39,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1063 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2023-12-21 14:24:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2150. [2023-12-21 14:24:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.6589111214518382) internal successors, (3565), 2149 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3565 transitions. [2023-12-21 14:24:39,317 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3565 transitions. Word has length 114 [2023-12-21 14:24:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:39,317 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3565 transitions. [2023-12-21 14:24:39,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3565 transitions. [2023-12-21 14:24:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 14:24:39,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:39,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:39,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:24:39,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:39,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 622188600, now seen corresponding path program 1 times [2023-12-21 14:24:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162091881] [2023-12-21 14:24:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:39,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162091881] [2023-12-21 14:24:39,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162091881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:39,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:39,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:24:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037674065] [2023-12-21 14:24:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:39,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:24:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:24:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:24:39,459 INFO L87 Difference]: Start difference. First operand 2150 states and 3565 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:39,770 INFO L93 Difference]: Finished difference Result 11270 states and 18797 transitions. [2023-12-21 14:24:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:24:39,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2023-12-21 14:24:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:39,797 INFO L225 Difference]: With dead ends: 11270 [2023-12-21 14:24:39,797 INFO L226 Difference]: Without dead ends: 9300 [2023-12-21 14:24:39,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 14:24:39,802 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 2121 mSDsluCounter, 4357 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:39,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 4898 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:24:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9300 states. [2023-12-21 14:24:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 3988. [2023-12-21 14:24:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 1.657386506144971) internal successors, (6608), 3987 states have internal predecessors, (6608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 6608 transitions. [2023-12-21 14:24:39,925 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 6608 transitions. Word has length 117 [2023-12-21 14:24:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:39,926 INFO L495 AbstractCegarLoop]: Abstraction has 3988 states and 6608 transitions. [2023-12-21 14:24:39,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 6608 transitions. [2023-12-21 14:24:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 14:24:39,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:39,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:39,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:24:39,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:39,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2040915368, now seen corresponding path program 1 times [2023-12-21 14:24:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795975513] [2023-12-21 14:24:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:39,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795975513] [2023-12-21 14:24:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795975513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:40,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:40,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965910044] [2023-12-21 14:24:40,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:40,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:40,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:40,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:40,058 INFO L87 Difference]: Start difference. First operand 3988 states and 6608 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:40,142 INFO L93 Difference]: Finished difference Result 11700 states and 19468 transitions. [2023-12-21 14:24:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:40,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-12-21 14:24:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:40,166 INFO L225 Difference]: With dead ends: 11700 [2023-12-21 14:24:40,167 INFO L226 Difference]: Without dead ends: 7892 [2023-12-21 14:24:40,174 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 [2023-12-21 14:24:40,175 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 717 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1817 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 [2023-12-21 14:24:40,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1817 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2023-12-21 14:24:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 5923. [2023-12-21 14:24:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5923 states, 5922 states have (on average 1.6587301587301588) internal successors, (9823), 5922 states have internal predecessors, (9823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5923 states to 5923 states and 9823 transitions. [2023-12-21 14:24:40,405 INFO L78 Accepts]: Start accepts. Automaton has 5923 states and 9823 transitions. Word has length 118 [2023-12-21 14:24:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:40,405 INFO L495 AbstractCegarLoop]: Abstraction has 5923 states and 9823 transitions. [2023-12-21 14:24:40,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5923 states and 9823 transitions. [2023-12-21 14:24:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 14:24:40,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:40,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:40,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:24:40,409 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:40,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:40,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1025403431, now seen corresponding path program 1 times [2023-12-21 14:24:40,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:40,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23604285] [2023-12-21 14:24:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:40,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23604285] [2023-12-21 14:24:40,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23604285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:40,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:40,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:40,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831424144] [2023-12-21 14:24:40,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:40,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:40,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:40,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:40,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:40,485 INFO L87 Difference]: Start difference. First operand 5923 states and 9823 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:40,541 INFO L93 Difference]: Finished difference Result 13012 states and 21665 transitions. [2023-12-21 14:24:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 14:24:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:40,572 INFO L225 Difference]: With dead ends: 13012 [2023-12-21 14:24:40,572 INFO L226 Difference]: Without dead ends: 9011 [2023-12-21 14:24:40,580 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 [2023-12-21 14:24:40,581 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 226 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1230 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 [2023-12-21 14:24:40,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1230 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9011 states. [2023-12-21 14:24:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9011 to 9009. [2023-12-21 14:24:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9009 states, 9008 states have (on average 1.6581927175843694) internal successors, (14937), 9008 states have internal predecessors, (14937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 14937 transitions. [2023-12-21 14:24:40,732 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 14937 transitions. Word has length 119 [2023-12-21 14:24:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:40,732 INFO L495 AbstractCegarLoop]: Abstraction has 9009 states and 14937 transitions. [2023-12-21 14:24:40,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 14937 transitions. [2023-12-21 14:24:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 14:24:40,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:40,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:40,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:24:40,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:40,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash -889119603, now seen corresponding path program 1 times [2023-12-21 14:24:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109672034] [2023-12-21 14:24:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:40,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109672034] [2023-12-21 14:24:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109672034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:40,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:40,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680285767] [2023-12-21 14:24:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:40,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:40,789 INFO L87 Difference]: Start difference. First operand 9009 states and 14937 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:40,840 INFO L93 Difference]: Finished difference Result 17392 states and 28866 transitions. [2023-12-21 14:24:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:40,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 14:24:40,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:40,861 INFO L225 Difference]: With dead ends: 17392 [2023-12-21 14:24:40,861 INFO L226 Difference]: Without dead ends: 12630 [2023-12-21 14:24:40,870 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 [2023-12-21 14:24:40,871 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 212 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1154 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 [2023-12-21 14:24:40,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1154 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12630 states. [2023-12-21 14:24:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12630 to 12628. [2023-12-21 14:24:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12628 states, 12627 states have (on average 1.6539954066682505) internal successors, (20885), 12627 states have internal predecessors, (20885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12628 states to 12628 states and 20885 transitions. [2023-12-21 14:24:41,118 INFO L78 Accepts]: Start accepts. Automaton has 12628 states and 20885 transitions. Word has length 119 [2023-12-21 14:24:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:41,118 INFO L495 AbstractCegarLoop]: Abstraction has 12628 states and 20885 transitions. [2023-12-21 14:24:41,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 12628 states and 20885 transitions. [2023-12-21 14:24:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 14:24:41,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:41,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:41,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:24:41,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:41,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1218637057, now seen corresponding path program 1 times [2023-12-21 14:24:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:41,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967462617] [2023-12-21 14:24:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:41,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:41,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967462617] [2023-12-21 14:24:41,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967462617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:41,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:41,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:41,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336596290] [2023-12-21 14:24:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:41,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:41,200 INFO L87 Difference]: Start difference. First operand 12628 states and 20885 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:41,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:41,382 INFO L93 Difference]: Finished difference Result 37652 states and 62419 transitions. [2023-12-21 14:24:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:41,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 14:24:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:41,430 INFO L225 Difference]: With dead ends: 37652 [2023-12-21 14:24:41,430 INFO L226 Difference]: Without dead ends: 25265 [2023-12-21 14:24:41,443 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 [2023-12-21 14:24:41,445 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 716 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:41,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1741 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25265 states. [2023-12-21 14:24:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25265 to 18889. [2023-12-21 14:24:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18889 states, 18888 states have (on average 1.650730622617535) internal successors, (31179), 18888 states have internal predecessors, (31179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18889 states to 18889 states and 31179 transitions. [2023-12-21 14:24:41,796 INFO L78 Accepts]: Start accepts. Automaton has 18889 states and 31179 transitions. Word has length 119 [2023-12-21 14:24:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:41,796 INFO L495 AbstractCegarLoop]: Abstraction has 18889 states and 31179 transitions. [2023-12-21 14:24:41,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 18889 states and 31179 transitions. [2023-12-21 14:24:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 14:24:41,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:41,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:41,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:24:41,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:41,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1294918569, now seen corresponding path program 1 times [2023-12-21 14:24:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301986373] [2023-12-21 14:24:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:41,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:41,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301986373] [2023-12-21 14:24:41,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301986373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:41,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:41,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:41,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426886699] [2023-12-21 14:24:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:41,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:41,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:41,947 INFO L87 Difference]: Start difference. First operand 18889 states and 31179 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:42,067 INFO L93 Difference]: Finished difference Result 36441 states and 60223 transitions. [2023-12-21 14:24:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:42,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 14:24:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:42,113 INFO L225 Difference]: With dead ends: 36441 [2023-12-21 14:24:42,114 INFO L226 Difference]: Without dead ends: 26359 [2023-12-21 14:24:42,133 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 [2023-12-21 14:24:42,134 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 205 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1121 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 [2023-12-21 14:24:42,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1121 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26359 states. [2023-12-21 14:24:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26359 to 26357. [2023-12-21 14:24:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26357 states, 26356 states have (on average 1.6459629685840036) internal successors, (43381), 26356 states have internal predecessors, (43381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26357 states to 26357 states and 43381 transitions. [2023-12-21 14:24:42,558 INFO L78 Accepts]: Start accepts. Automaton has 26357 states and 43381 transitions. Word has length 119 [2023-12-21 14:24:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:42,559 INFO L495 AbstractCegarLoop]: Abstraction has 26357 states and 43381 transitions. [2023-12-21 14:24:42,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 26357 states and 43381 transitions. [2023-12-21 14:24:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 14:24:42,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:42,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:42,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:24:42,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:42,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:42,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1986480803, now seen corresponding path program 1 times [2023-12-21 14:24:42,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463645586] [2023-12-21 14:24:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:42,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:42,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:42,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463645586] [2023-12-21 14:24:42,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463645586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:42,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:24:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313913799] [2023-12-21 14:24:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:42,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:24:42,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:24:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:24:42,713 INFO L87 Difference]: Start difference. First operand 26357 states and 43381 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:42,850 INFO L93 Difference]: Finished difference Result 57154 states and 94162 transitions. [2023-12-21 14:24:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:24:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-12-21 14:24:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:42,919 INFO L225 Difference]: With dead ends: 57154 [2023-12-21 14:24:42,919 INFO L226 Difference]: Without dead ends: 39060 [2023-12-21 14:24:42,944 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 [2023-12-21 14:24:42,945 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 219 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1205 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 [2023-12-21 14:24:42,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39060 states. [2023-12-21 14:24:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39060 to 39058. [2023-12-21 14:24:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39058 states, 39057 states have (on average 1.6396036561947922) internal successors, (64038), 39057 states have internal predecessors, (64038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39058 states to 39058 states and 64038 transitions. [2023-12-21 14:24:43,666 INFO L78 Accepts]: Start accepts. Automaton has 39058 states and 64038 transitions. Word has length 119 [2023-12-21 14:24:43,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:43,666 INFO L495 AbstractCegarLoop]: Abstraction has 39058 states and 64038 transitions. [2023-12-21 14:24:43,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:43,666 INFO L276 IsEmpty]: Start isEmpty. Operand 39058 states and 64038 transitions. [2023-12-21 14:24:43,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 14:24:43,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:43,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:43,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:24:43,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:43,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash 819010895, now seen corresponding path program 1 times [2023-12-21 14:24:43,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:43,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459271975] [2023-12-21 14:24:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:43,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:43,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:43,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459271975] [2023-12-21 14:24:43,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459271975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:43,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:43,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598611590] [2023-12-21 14:24:43,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:43,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:43,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:43,788 INFO L87 Difference]: Start difference. First operand 39058 states and 64038 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:44,400 INFO L93 Difference]: Finished difference Result 126524 states and 207698 transitions. [2023-12-21 14:24:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:44,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2023-12-21 14:24:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:44,658 INFO L225 Difference]: With dead ends: 126524 [2023-12-21 14:24:44,658 INFO L226 Difference]: Without dead ends: 87714 [2023-12-21 14:24:44,698 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 [2023-12-21 14:24:44,699 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 714 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:44,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1740 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87714 states. [2023-12-21 14:24:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87714 to 63243. [2023-12-21 14:24:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63243 states, 63242 states have (on average 1.6341197305588058) internal successors, (103345), 63242 states have internal predecessors, (103345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63243 states to 63243 states and 103345 transitions. [2023-12-21 14:24:45,921 INFO L78 Accepts]: Start accepts. Automaton has 63243 states and 103345 transitions. Word has length 120 [2023-12-21 14:24:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:45,921 INFO L495 AbstractCegarLoop]: Abstraction has 63243 states and 103345 transitions. [2023-12-21 14:24:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 63243 states and 103345 transitions. [2023-12-21 14:24:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 14:24:45,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:45,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:45,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:24:45,923 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:45,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -433854010, now seen corresponding path program 1 times [2023-12-21 14:24:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381188321] [2023-12-21 14:24:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381188321] [2023-12-21 14:24:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381188321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:24:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944387162] [2023-12-21 14:24:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:24:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:24:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:24:45,998 INFO L87 Difference]: Start difference. First operand 63243 states and 103345 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:46,704 INFO L93 Difference]: Finished difference Result 202554 states and 331404 transitions. [2023-12-21 14:24:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:24:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-12-21 14:24:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:46,942 INFO L225 Difference]: With dead ends: 202554 [2023-12-21 14:24:46,942 INFO L226 Difference]: Without dead ends: 139559 [2023-12-21 14:24:47,002 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 [2023-12-21 14:24:47,002 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 712 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:47,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1795 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139559 states. [2023-12-21 14:24:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139559 to 101176. [2023-12-21 14:24:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101176 states, 101175 states have (on average 1.6287422782307883) internal successors, (164788), 101175 states have internal predecessors, (164788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101176 states to 101176 states and 164788 transitions. [2023-12-21 14:24:49,153 INFO L78 Accepts]: Start accepts. Automaton has 101176 states and 164788 transitions. Word has length 121 [2023-12-21 14:24:49,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:49,153 INFO L495 AbstractCegarLoop]: Abstraction has 101176 states and 164788 transitions. [2023-12-21 14:24:49,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 101176 states and 164788 transitions. [2023-12-21 14:24:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 14:24:49,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:49,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:49,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:24:49,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:49,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1839181961, now seen corresponding path program 1 times [2023-12-21 14:24:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229172362] [2023-12-21 14:24:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:49,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229172362] [2023-12-21 14:24:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229172362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:49,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:49,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:24:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085804209] [2023-12-21 14:24:49,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:24:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:24:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:24:49,390 INFO L87 Difference]: Start difference. First operand 101176 states and 164788 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:50,240 INFO L93 Difference]: Finished difference Result 202106 states and 329173 transitions. [2023-12-21 14:24:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:24:50,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-12-21 14:24:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:50,398 INFO L225 Difference]: With dead ends: 202106 [2023-12-21 14:24:50,399 INFO L226 Difference]: Without dead ends: 101178 [2023-12-21 14:24:50,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:24:50,461 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 413 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:50,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 2070 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:50,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101178 states. [2023-12-21 14:24:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101178 to 101176. [2023-12-21 14:24:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101176 states, 101175 states have (on average 1.622564862861379) internal successors, (164163), 101175 states have internal predecessors, (164163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101176 states to 101176 states and 164163 transitions. [2023-12-21 14:24:52,000 INFO L78 Accepts]: Start accepts. Automaton has 101176 states and 164163 transitions. Word has length 123 [2023-12-21 14:24:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:52,001 INFO L495 AbstractCegarLoop]: Abstraction has 101176 states and 164163 transitions. [2023-12-21 14:24:52,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 101176 states and 164163 transitions. [2023-12-21 14:24:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 14:24:52,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:52,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:52,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:24:52,002 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:52,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2074575841, now seen corresponding path program 1 times [2023-12-21 14:24:52,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:52,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579720279] [2023-12-21 14:24:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:52,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579720279] [2023-12-21 14:24:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579720279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:52,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:52,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:24:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673969656] [2023-12-21 14:24:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:24:52,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:24:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:24:52,615 INFO L87 Difference]: Start difference. First operand 101176 states and 164163 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:53,691 INFO L93 Difference]: Finished difference Result 295752 states and 480297 transitions. [2023-12-21 14:24:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:24:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-12-21 14:24:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:24:54,068 INFO L225 Difference]: With dead ends: 295752 [2023-12-21 14:24:54,068 INFO L226 Difference]: Without dead ends: 194824 [2023-12-21 14:24:54,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:24:54,150 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 409 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:24:54,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 2087 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:24:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194824 states. [2023-12-21 14:24:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194824 to 194822. [2023-12-21 14:24:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194822 states, 194821 states have (on average 1.6144050179395446) internal successors, (314520), 194821 states have internal predecessors, (314520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194822 states to 194822 states and 314520 transitions. [2023-12-21 14:24:57,014 INFO L78 Accepts]: Start accepts. Automaton has 194822 states and 314520 transitions. Word has length 126 [2023-12-21 14:24:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:24:57,015 INFO L495 AbstractCegarLoop]: Abstraction has 194822 states and 314520 transitions. [2023-12-21 14:24:57,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:57,015 INFO L276 IsEmpty]: Start isEmpty. Operand 194822 states and 314520 transitions. [2023-12-21 14:24:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-21 14:24:57,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:24:57,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:24:57,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:24:57,041 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:24:57,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:24:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash -114567500, now seen corresponding path program 1 times [2023-12-21 14:24:57,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:24:57,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869953066] [2023-12-21 14:24:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:24:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:24:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:24:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:24:57,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:24:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869953066] [2023-12-21 14:24:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869953066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:24:57,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:24:57,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:24:57,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728845263] [2023-12-21 14:24:57,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:24:57,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:24:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:24:57,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:24:57,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:24:57,809 INFO L87 Difference]: Start difference. First operand 194822 states and 314520 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:24:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:24:59,037 INFO L93 Difference]: Finished difference Result 369686 states and 594807 transitions. [2023-12-21 14:24:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:24:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-12-21 14:24:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:00,091 INFO L225 Difference]: With dead ends: 369686 [2023-12-21 14:25:00,092 INFO L226 Difference]: Without dead ends: 369684 [2023-12-21 14:25:00,191 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 [2023-12-21 14:25:00,192 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 462 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:00,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 2473 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:25:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369684 states. [2023-12-21 14:25:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369684 to 198694. [2023-12-21 14:25:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198694 states, 198693 states have (on average 1.60229600438868) internal successors, (318365), 198693 states have internal predecessors, (318365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198694 states to 198694 states and 318365 transitions. [2023-12-21 14:25:04,308 INFO L78 Accepts]: Start accepts. Automaton has 198694 states and 318365 transitions. Word has length 127 [2023-12-21 14:25:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:04,308 INFO L495 AbstractCegarLoop]: Abstraction has 198694 states and 318365 transitions. [2023-12-21 14:25:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 198694 states and 318365 transitions. [2023-12-21 14:25:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:25:04,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:04,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:04,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:25:04,323 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:04,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash -59338693, now seen corresponding path program 1 times [2023-12-21 14:25:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:04,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109616488] [2023-12-21 14:25:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:25:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109616488] [2023-12-21 14:25:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109616488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:25:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069161036] [2023-12-21 14:25:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:25:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:25:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:25:04,450 INFO L87 Difference]: Start difference. First operand 198694 states and 318365 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:06,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:06,552 INFO L93 Difference]: Finished difference Result 542118 states and 870862 transitions. [2023-12-21 14:25:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:25:06,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 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 161 [2023-12-21 14:25:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:07,607 INFO L225 Difference]: With dead ends: 542118 [2023-12-21 14:25:07,608 INFO L226 Difference]: Without dead ends: 453716 [2023-12-21 14:25:07,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:25:07,798 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 1441 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:07,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 3181 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453716 states. [2023-12-21 14:25:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453716 to 319472. [2023-12-21 14:25:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319472 states, 319471 states have (on average 1.6004238256367558) internal successors, (511289), 319471 states have internal predecessors, (511289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319472 states to 319472 states and 511289 transitions. [2023-12-21 14:25:14,522 INFO L78 Accepts]: Start accepts. Automaton has 319472 states and 511289 transitions. Word has length 161 [2023-12-21 14:25:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:14,522 INFO L495 AbstractCegarLoop]: Abstraction has 319472 states and 511289 transitions. [2023-12-21 14:25:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 319472 states and 511289 transitions. [2023-12-21 14:25:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:25:14,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:14,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:14,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:25:14,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:14,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:14,529 INFO L85 PathProgramCache]: Analyzing trace with hash 76945135, now seen corresponding path program 1 times [2023-12-21 14:25:14,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:14,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832696581] [2023-12-21 14:25:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:14,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 14:25:14,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:14,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832696581] [2023-12-21 14:25:14,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832696581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:14,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:14,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:25:14,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274880049] [2023-12-21 14:25:14,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:14,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:25:14,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:14,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:25:14,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:25:14,807 INFO L87 Difference]: Start difference. First operand 319472 states and 511289 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:17,432 INFO L93 Difference]: Finished difference Result 609928 states and 979866 transitions. [2023-12-21 14:25:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:25:17,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 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 161 [2023-12-21 14:25:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:19,274 INFO L225 Difference]: With dead ends: 609928 [2023-12-21 14:25:19,275 INFO L226 Difference]: Without dead ends: 522676 [2023-12-21 14:25:19,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:25:19,377 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1562 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:19,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 3319 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522676 states. [2023-12-21 14:25:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522676 to 431896. [2023-12-21 14:25:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431896 states, 431895 states have (on average 1.60151194155987) internal successors, (691685), 431895 states have internal predecessors, (691685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431896 states to 431896 states and 691685 transitions. [2023-12-21 14:25:27,043 INFO L78 Accepts]: Start accepts. Automaton has 431896 states and 691685 transitions. Word has length 161 [2023-12-21 14:25:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:27,044 INFO L495 AbstractCegarLoop]: Abstraction has 431896 states and 691685 transitions. [2023-12-21 14:25:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 431896 states and 691685 transitions. [2023-12-21 14:25:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:25:27,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:27,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:27,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:25:27,050 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:27,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2033983989, now seen corresponding path program 1 times [2023-12-21 14:25:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:27,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192089986] [2023-12-21 14:25:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:27,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 14:25:27,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:27,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192089986] [2023-12-21 14:25:27,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192089986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:27,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:27,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:25:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173398526] [2023-12-21 14:25:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:27,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:25:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:25:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:25:27,198 INFO L87 Difference]: Start difference. First operand 431896 states and 691685 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:29,711 INFO L93 Difference]: Finished difference Result 644508 states and 1035406 transitions. [2023-12-21 14:25:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:25:29,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 161 [2023-12-21 14:25:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:31,149 INFO L225 Difference]: With dead ends: 644508 [2023-12-21 14:25:31,150 INFO L226 Difference]: Without dead ends: 557256 [2023-12-21 14:25:31,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:25:31,253 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 1531 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:31,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 3353 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557256 states. [2023-12-21 14:25:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557256 to 500120. [2023-12-21 14:25:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500120 states, 500119 states have (on average 1.6025805858205746) internal successors, (801481), 500119 states have internal predecessors, (801481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500120 states to 500120 states and 801481 transitions. [2023-12-21 14:25:40,309 INFO L78 Accepts]: Start accepts. Automaton has 500120 states and 801481 transitions. Word has length 161 [2023-12-21 14:25:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:40,310 INFO L495 AbstractCegarLoop]: Abstraction has 500120 states and 801481 transitions. [2023-12-21 14:25:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 500120 states and 801481 transitions. [2023-12-21 14:25:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 14:25:40,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:40,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:40,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:25:40,316 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:40,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1020416065, now seen corresponding path program 1 times [2023-12-21 14:25:40,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245294993] [2023-12-21 14:25:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 14:25:41,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:41,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245294993] [2023-12-21 14:25:41,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245294993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 14:25:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006208415] [2023-12-21 14:25:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:41,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 14:25:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 14:25:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:25:41,158 INFO L87 Difference]: Start difference. First operand 500120 states and 801481 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:25:44,399 INFO L93 Difference]: Finished difference Result 699964 states and 1124634 transitions. [2023-12-21 14:25:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:25:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 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 161 [2023-12-21 14:25:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:25:46,443 INFO L225 Difference]: With dead ends: 699964 [2023-12-21 14:25:46,443 INFO L226 Difference]: Without dead ends: 612712 [2023-12-21 14:25:46,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:25:46,560 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1444 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:25:46,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 3503 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:25:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612712 states. [2023-12-21 14:25:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612712 to 568344. [2023-12-21 14:25:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568344 states, 568343 states have (on average 1.6033926695674972) internal successors, (911277), 568343 states have internal predecessors, (911277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568344 states to 568344 states and 911277 transitions. [2023-12-21 14:25:56,547 INFO L78 Accepts]: Start accepts. Automaton has 568344 states and 911277 transitions. Word has length 161 [2023-12-21 14:25:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:25:56,548 INFO L495 AbstractCegarLoop]: Abstraction has 568344 states and 911277 transitions. [2023-12-21 14:25:56,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:25:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 568344 states and 911277 transitions. [2023-12-21 14:25:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:25:56,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:25:56,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:25:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:25:56,554 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:25:56,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:25:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1906561531, now seen corresponding path program 1 times [2023-12-21 14:25:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:25:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447272431] [2023-12-21 14:25:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:25:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:25:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:25:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:25:56,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:25:56,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447272431] [2023-12-21 14:25:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447272431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:25:56,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:25:56,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:25:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361589426] [2023-12-21 14:25:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:25:56,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:25:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:25:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:25:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:25:56,839 INFO L87 Difference]: Start difference. First operand 568344 states and 911277 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:00,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:00,796 INFO L93 Difference]: Finished difference Result 874349 states and 1405534 transitions. [2023-12-21 14:26:00,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:26:00,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 162 [2023-12-21 14:26:00,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:03,461 INFO L225 Difference]: With dead ends: 874349 [2023-12-21 14:26:03,461 INFO L226 Difference]: Without dead ends: 716987 [2023-12-21 14:26:03,609 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 [2023-12-21 14:26:03,610 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 425 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:03,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1543 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716987 states. [2023-12-21 14:26:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716987 to 686327. [2023-12-21 14:26:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686327 states, 686326 states have (on average 1.6031783729597888) internal successors, (1100303), 686326 states have internal predecessors, (1100303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686327 states to 686327 states and 1100303 transitions. [2023-12-21 14:26:16,526 INFO L78 Accepts]: Start accepts. Automaton has 686327 states and 1100303 transitions. Word has length 162 [2023-12-21 14:26:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:16,527 INFO L495 AbstractCegarLoop]: Abstraction has 686327 states and 1100303 transitions. [2023-12-21 14:26:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 686327 states and 1100303 transitions. [2023-12-21 14:26:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 14:26:16,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:16,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:26:16,534 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:16,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash -759687574, now seen corresponding path program 1 times [2023-12-21 14:26:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722908418] [2023-12-21 14:26:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:26:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722908418] [2023-12-21 14:26:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722908418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:16,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150466079] [2023-12-21 14:26:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:16,713 INFO L87 Difference]: Start difference. First operand 686327 states and 1100303 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:26:23,095 INFO L93 Difference]: Finished difference Result 1442471 states and 2316941 transitions. [2023-12-21 14:26:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:26:23,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 162 [2023-12-21 14:26:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:26:26,600 INFO L225 Difference]: With dead ends: 1442471 [2023-12-21 14:26:26,601 INFO L226 Difference]: Without dead ends: 1135789 [2023-12-21 14:26:27,708 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 [2023-12-21 14:26:27,709 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 195 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:26:27,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1040 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:26:28,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135789 states. [2023-12-21 14:26:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135789 to 1134099. [2023-12-21 14:26:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134099 states, 1134098 states have (on average 1.603066048965786) internal successors, (1818034), 1134098 states have internal predecessors, (1818034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134099 states to 1134099 states and 1818034 transitions. [2023-12-21 14:26:48,177 INFO L78 Accepts]: Start accepts. Automaton has 1134099 states and 1818034 transitions. Word has length 162 [2023-12-21 14:26:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:26:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 1134099 states and 1818034 transitions. [2023-12-21 14:26:48,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:26:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1134099 states and 1818034 transitions. [2023-12-21 14:26:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 14:26:48,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:26:48,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:26:48,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:26:48,229 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:26:48,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:26:48,229 INFO L85 PathProgramCache]: Analyzing trace with hash -294208522, now seen corresponding path program 1 times [2023-12-21 14:26:48,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:26:48,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810146923] [2023-12-21 14:26:48,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:26:48,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:26:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:26:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:26:48,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:26:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810146923] [2023-12-21 14:26:48,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810146923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:26:48,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:26:48,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:26:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297823237] [2023-12-21 14:26:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:26:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:26:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:26:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:26:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:26:48,334 INFO L87 Difference]: Start difference. First operand 1134099 states and 1818034 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)