/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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:23:47,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:23:47,686 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 13:23:47,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:23:47,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:23:47,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:23:47,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:23:47,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:23:47,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:23:47,707 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:23:47,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:23:47,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:23:47,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:23:47,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:23:47,709 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:23:47,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:23:47,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:23:47,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:23:47,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:23:47,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:23:47,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:23:47,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:23:47,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:23:47,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:23:47,712 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:23:47,712 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:23:47,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:23:47,713 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:23:47,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:23:47,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:23:47,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:23:47,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:23:47,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:23:47,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:23:47,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:23:47,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:23:47,715 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:23:47,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:23:47,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:23:47,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:23:47,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:23:47,941 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:23:47,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:23:49,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:23:49,165 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:23:49,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:23:49,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9014a99/cfc71e8e1bfb41bdb7b38fe25769f5e3/FLAGf939f750d [2023-12-21 13:23:49,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9014a99/cfc71e8e1bfb41bdb7b38fe25769f5e3 [2023-12-21 13:23:49,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:23:49,187 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:23:49,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:23:49,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:23:49,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:23:49,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106d83cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49, skipping insertion in model container [2023-12-21 13:23:49,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,222 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:23:49,373 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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2023-12-21 13:23:49,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:23:49,400 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:23:49,446 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_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2023-12-21 13:23:49,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:23:49,488 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:23:49,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49 WrapperNode [2023-12-21 13:23:49,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:23:49,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:23:49,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:23:49,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:23:49,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,531 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 458 [2023-12-21 13:23:49,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:23:49,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:23:49,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:23:49,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:23:49,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,578 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 13:23:49,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:23:49,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:23:49,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:23:49,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:23:49,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (1/1) ... [2023-12-21 13:23:49,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:23:49,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:49,632 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 13:23:49,640 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 13:23:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:23:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:23:49,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:23:49,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:23:49,758 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:23:49,759 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:23:50,055 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:23:50,081 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:23:50,082 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:23:50,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:23:50 BoogieIcfgContainer [2023-12-21 13:23:50,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:23:50,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:23:50,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:23:50,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:23:50,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:23:49" (1/3) ... [2023-12-21 13:23:50,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7431ca3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:23:50, skipping insertion in model container [2023-12-21 13:23:50,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:23:49" (2/3) ... [2023-12-21 13:23:50,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7431ca3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:23:50, skipping insertion in model container [2023-12-21 13:23:50,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:23:50" (3/3) ... [2023-12-21 13:23:50,088 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:23:50,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:23:50,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:23:50,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:23:50,134 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;@1647b29e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:23:50,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:23:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 13:23:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:23:50,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:50,145 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] [2023-12-21 13:23:50,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:50,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1500294558, now seen corresponding path program 1 times [2023-12-21 13:23:50,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:50,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716948472] [2023-12-21 13:23:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:50,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:50,384 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 13:23:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:50,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716948472] [2023-12-21 13:23:50,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716948472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:50,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:50,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553821962] [2023-12-21 13:23:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:50,421 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.6944444444444444) internal successors, (183), 109 states have internal predecessors, (183), 0 states have call successors, (0), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:23:50,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:50,480 INFO L93 Difference]: Finished difference Result 262 states and 421 transitions. [2023-12-21 13:23:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-21 13:23:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:50,490 INFO L225 Difference]: With dead ends: 262 [2023-12-21 13:23:50,490 INFO L226 Difference]: Without dead ends: 174 [2023-12-21 13:23:50,492 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 13:23:50,494 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 129 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:50,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 376 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:50,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-21 13:23:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2023-12-21 13:23:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.5087719298245614) internal successors, (258), 171 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 13:23:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 258 transitions. [2023-12-21 13:23:50,524 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 258 transitions. Word has length 48 [2023-12-21 13:23:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:50,524 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 258 transitions. [2023-12-21 13:23:50,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 13:23:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 258 transitions. [2023-12-21 13:23:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:23:50,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:50,525 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] [2023-12-21 13:23:50,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:23:50,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:50,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1904231256, now seen corresponding path program 1 times [2023-12-21 13:23:50,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:50,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960261623] [2023-12-21 13:23:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:50,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:50,669 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 13:23:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960261623] [2023-12-21 13:23:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960261623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:50,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561057036] [2023-12-21 13:23:50,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:50,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:50,672 INFO L87 Difference]: Start difference. First operand 172 states and 258 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:23:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:50,689 INFO L93 Difference]: Finished difference Result 432 states and 670 transitions. [2023-12-21 13:23:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:50,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-21 13:23:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:50,691 INFO L225 Difference]: With dead ends: 432 [2023-12-21 13:23:50,692 INFO L226 Difference]: Without dead ends: 286 [2023-12-21 13:23:50,692 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 13:23:50,693 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 108 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 327 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 13:23:50,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 327 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-21 13:23:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2023-12-21 13:23:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.5371024734982333) internal successors, (435), 283 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 435 transitions. [2023-12-21 13:23:50,710 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 435 transitions. Word has length 49 [2023-12-21 13:23:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 435 transitions. [2023-12-21 13:23:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 13:23:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 435 transitions. [2023-12-21 13:23:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 13:23:50,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:50,711 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] [2023-12-21 13:23:50,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:23:50,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:50,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash -583215553, now seen corresponding path program 1 times [2023-12-21 13:23:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119247131] [2023-12-21 13:23:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:50,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:50,803 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 13:23:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119247131] [2023-12-21 13:23:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119247131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220124520] [2023-12-21 13:23:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:50,805 INFO L87 Difference]: Start difference. First operand 284 states and 435 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 13:23:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:50,819 INFO L93 Difference]: Finished difference Result 736 states and 1149 transitions. [2023-12-21 13:23:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:50,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-21 13:23:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:50,827 INFO L225 Difference]: With dead ends: 736 [2023-12-21 13:23:50,827 INFO L226 Difference]: Without dead ends: 478 [2023-12-21 13:23:50,827 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 13:23:50,828 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 103 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 312 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 13:23:50,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 312 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-21 13:23:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 476. [2023-12-21 13:23:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.5473684210526315) internal successors, (735), 475 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 13:23:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 735 transitions. [2023-12-21 13:23:50,857 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 735 transitions. Word has length 50 [2023-12-21 13:23:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:50,857 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 735 transitions. [2023-12-21 13:23:50,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 13:23:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 735 transitions. [2023-12-21 13:23:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:23:50,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:50,858 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] [2023-12-21 13:23:50,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:23:50,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:50,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1140177137, now seen corresponding path program 1 times [2023-12-21 13:23:50,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:50,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769566111] [2023-12-21 13:23:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:51,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:51,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769566111] [2023-12-21 13:23:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769566111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:51,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:23:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195479016] [2023-12-21 13:23:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:51,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:23:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:23:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:23:51,018 INFO L87 Difference]: Start difference. First operand 476 states and 735 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 13:23:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:51,126 INFO L93 Difference]: Finished difference Result 2726 states and 4280 transitions. [2023-12-21 13:23:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:23:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-21 13:23:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:51,136 INFO L225 Difference]: With dead ends: 2726 [2023-12-21 13:23:51,136 INFO L226 Difference]: Without dead ends: 2276 [2023-12-21 13:23:51,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:23:51,141 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1016 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:51,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1216 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2023-12-21 13:23:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 924. [2023-12-21 13:23:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 1.5460455037919827) internal successors, (1427), 923 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states 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 13:23:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1427 transitions. [2023-12-21 13:23:51,185 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1427 transitions. Word has length 51 [2023-12-21 13:23:51,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:51,186 INFO L495 AbstractCegarLoop]: Abstraction has 924 states and 1427 transitions. [2023-12-21 13:23:51,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 13:23:51,186 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1427 transitions. [2023-12-21 13:23:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:23:51,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:51,189 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] [2023-12-21 13:23:51,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:23:51,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:51,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1005209156, now seen corresponding path program 1 times [2023-12-21 13:23:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:51,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534342253] [2023-12-21 13:23:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:51,349 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 13:23:51,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:51,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534342253] [2023-12-21 13:23:51,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534342253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:51,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:51,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:23:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696615074] [2023-12-21 13:23:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:23:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:23:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:23:51,353 INFO L87 Difference]: Start difference. First operand 924 states and 1427 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 13:23:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:51,427 INFO L93 Difference]: Finished difference Result 4028 states and 6231 transitions. [2023-12-21 13:23:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:23:51,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 13:23:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:51,436 INFO L225 Difference]: With dead ends: 4028 [2023-12-21 13:23:51,436 INFO L226 Difference]: Without dead ends: 3130 [2023-12-21 13:23:51,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:23:51,441 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 406 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:51,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 815 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:23:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2023-12-21 13:23:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 3124. [2023-12-21 13:23:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 1.5405059237912264) internal successors, (4811), 3123 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states 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 13:23:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4811 transitions. [2023-12-21 13:23:51,485 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4811 transitions. Word has length 52 [2023-12-21 13:23:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:51,486 INFO L495 AbstractCegarLoop]: Abstraction has 3124 states and 4811 transitions. [2023-12-21 13:23:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 13:23:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4811 transitions. [2023-12-21 13:23:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:23:51,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:51,489 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] [2023-12-21 13:23:51,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:23:51,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:51,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1230800526, now seen corresponding path program 1 times [2023-12-21 13:23:51,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:51,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751997465] [2023-12-21 13:23:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:51,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:51,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751997465] [2023-12-21 13:23:51,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751997465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:51,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:51,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123036760] [2023-12-21 13:23:51,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:51,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:51,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:51,549 INFO L87 Difference]: Start difference. First operand 3124 states and 4811 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:51,579 INFO L93 Difference]: Finished difference Result 8248 states and 12653 transitions. [2023-12-21 13:23:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 13:23:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:51,591 INFO L225 Difference]: With dead ends: 8248 [2023-12-21 13:23:51,591 INFO L226 Difference]: Without dead ends: 5150 [2023-12-21 13:23:51,596 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 13:23:51,598 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 115 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 367 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 13:23:51,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 367 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:51,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2023-12-21 13:23:51,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5148. [2023-12-21 13:23:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 5147 states have (on average 1.5160287546143385) internal successors, (7803), 5147 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states 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 13:23:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 7803 transitions. [2023-12-21 13:23:51,707 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 7803 transitions. Word has length 53 [2023-12-21 13:23:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:51,708 INFO L495 AbstractCegarLoop]: Abstraction has 5148 states and 7803 transitions. [2023-12-21 13:23:51,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 7803 transitions. [2023-12-21 13:23:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:23:51,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:51,709 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] [2023-12-21 13:23:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:23:51,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:51,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1165128050, now seen corresponding path program 1 times [2023-12-21 13:23:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053709643] [2023-12-21 13:23:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:51,881 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 13:23:51,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:51,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053709643] [2023-12-21 13:23:51,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053709643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:51,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:51,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:23:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297452751] [2023-12-21 13:23:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:23:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:51,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:23:51,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:51,883 INFO L87 Difference]: Start difference. First operand 5148 states and 7803 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:51,933 INFO L93 Difference]: Finished difference Result 10526 states and 15836 transitions. [2023-12-21 13:23:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:23:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-21 13:23:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:51,962 INFO L225 Difference]: With dead ends: 10526 [2023-12-21 13:23:51,962 INFO L226 Difference]: Without dead ends: 10524 [2023-12-21 13:23:51,966 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 13:23:51,969 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 248 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:51,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 766 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10524 states. [2023-12-21 13:23:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10524 to 5404. [2023-12-21 13:23:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5404 states, 5403 states have (on average 1.4915787525448825) internal successors, (8059), 5403 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states 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 13:23:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5404 states to 5404 states and 8059 transitions. [2023-12-21 13:23:52,115 INFO L78 Accepts]: Start accepts. Automaton has 5404 states and 8059 transitions. Word has length 54 [2023-12-21 13:23:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:52,116 INFO L495 AbstractCegarLoop]: Abstraction has 5404 states and 8059 transitions. [2023-12-21 13:23:52,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5404 states and 8059 transitions. [2023-12-21 13:23:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:23:52,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:52,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:23:52,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:52,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1748658131, now seen corresponding path program 1 times [2023-12-21 13:23:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949722557] [2023-12-21 13:23:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:52,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:52,174 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 13:23:52,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:52,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949722557] [2023-12-21 13:23:52,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949722557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:52,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:52,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:52,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660953187] [2023-12-21 13:23:52,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:52,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:52,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:52,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:52,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:52,177 INFO L87 Difference]: Start difference. First operand 5404 states and 8059 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:52,222 INFO L93 Difference]: Finished difference Result 13258 states and 19787 transitions. [2023-12-21 13:23:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 13:23:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:52,239 INFO L225 Difference]: With dead ends: 13258 [2023-12-21 13:23:52,240 INFO L226 Difference]: Without dead ends: 7880 [2023-12-21 13:23:52,252 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 13:23:52,253 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 92 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:52,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7880 states. [2023-12-21 13:23:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7880 to 7822. [2023-12-21 13:23:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7822 states, 7821 states have (on average 1.4812683800025572) internal successors, (11585), 7821 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states 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 13:23:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 11585 transitions. [2023-12-21 13:23:52,353 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 11585 transitions. Word has length 55 [2023-12-21 13:23:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:52,353 INFO L495 AbstractCegarLoop]: Abstraction has 7822 states and 11585 transitions. [2023-12-21 13:23:52,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:23:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 11585 transitions. [2023-12-21 13:23:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:23:52,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:52,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:52,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:23:52,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:52,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash -88776474, now seen corresponding path program 1 times [2023-12-21 13:23:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:52,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361033521] [2023-12-21 13:23:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361033521] [2023-12-21 13:23:52,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361033521] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:23:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612362356] [2023-12-21 13:23:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:52,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:23:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:23:52,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:23:52,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:23:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:52,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:23:52,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:23:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:23:52,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:23:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:23:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612362356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:23:53,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:23:53,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 13 [2023-12-21 13:23:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813629921] [2023-12-21 13:23:53,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:23:53,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:23:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:53,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:23:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:23:53,072 INFO L87 Difference]: Start difference. First operand 7822 states and 11585 transitions. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 13:23:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:58,771 INFO L93 Difference]: Finished difference Result 164214 states and 240339 transitions. [2023-12-21 13:23:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-21 13:23:58,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 0 states have call successors, (0), 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 78 [2023-12-21 13:23:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:59,115 INFO L225 Difference]: With dead ends: 164214 [2023-12-21 13:23:59,116 INFO L226 Difference]: Without dead ends: 156420 [2023-12-21 13:23:59,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7292 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2720, Invalid=14050, Unknown=0, NotChecked=0, Total=16770 [2023-12-21 13:23:59,173 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 9485 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 3605 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9485 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:59,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9485 Valid, 4015 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3605 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 13:23:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156420 states. [2023-12-21 13:24:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156420 to 53370. [2023-12-21 13:24:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53370 states, 53369 states have (on average 1.4388315314133673) internal successors, (76789), 53369 states have internal predecessors, (76789), 0 states have call successors, (0), 0 states 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 13:24:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53370 states to 53370 states and 76789 transitions. [2023-12-21 13:24:00,609 INFO L78 Accepts]: Start accepts. Automaton has 53370 states and 76789 transitions. Word has length 78 [2023-12-21 13:24:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:00,610 INFO L495 AbstractCegarLoop]: Abstraction has 53370 states and 76789 transitions. [2023-12-21 13:24:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 13:24:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 53370 states and 76789 transitions. [2023-12-21 13:24:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:24:00,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:00,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:00,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:24:00,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:24:00,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:00,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:00,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1976906248, now seen corresponding path program 1 times [2023-12-21 13:24:00,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:00,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143295517] [2023-12-21 13:24:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:00,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:00,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:00,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143295517] [2023-12-21 13:24:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143295517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:00,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:24:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581147780] [2023-12-21 13:24:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:00,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:24:00,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:24:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:00,865 INFO L87 Difference]: Start difference. First operand 53370 states and 76789 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:01,454 INFO L93 Difference]: Finished difference Result 124567 states and 179681 transitions. [2023-12-21 13:24:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:24:01,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:24:01,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:01,573 INFO L225 Difference]: With dead ends: 124567 [2023-12-21 13:24:01,574 INFO L226 Difference]: Without dead ends: 82173 [2023-12-21 13:24:01,598 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 13:24:01,599 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 93 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:01,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 381 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82173 states. [2023-12-21 13:24:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82173 to 82171. [2023-12-21 13:24:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82171 states, 82170 states have (on average 1.4268832907387123) internal successors, (117247), 82170 states have internal predecessors, (117247), 0 states have call successors, (0), 0 states 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 13:24:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82171 states to 82171 states and 117247 transitions. [2023-12-21 13:24:02,782 INFO L78 Accepts]: Start accepts. Automaton has 82171 states and 117247 transitions. Word has length 78 [2023-12-21 13:24:02,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:02,782 INFO L495 AbstractCegarLoop]: Abstraction has 82171 states and 117247 transitions. [2023-12-21 13:24:02,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 82171 states and 117247 transitions. [2023-12-21 13:24:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:24:02,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:02,793 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:24:02,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:02,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1631532212, now seen corresponding path program 1 times [2023-12-21 13:24:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253272918] [2023-12-21 13:24:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:03,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:03,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253272918] [2023-12-21 13:24:03,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253272918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:03,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:03,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:24:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293436721] [2023-12-21 13:24:03,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:24:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:24:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:03,044 INFO L87 Difference]: Start difference. First operand 82171 states and 117247 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:03,580 INFO L93 Difference]: Finished difference Result 166923 states and 238194 transitions. [2023-12-21 13:24:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:24:03,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:24:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:03,722 INFO L225 Difference]: With dead ends: 166923 [2023-12-21 13:24:03,722 INFO L226 Difference]: Without dead ends: 117641 [2023-12-21 13:24:03,750 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 13:24:03,750 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 93 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:03,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 334 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:03,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117641 states. [2023-12-21 13:24:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117641 to 108531. [2023-12-21 13:24:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108531 states, 108530 states have (on average 1.4119966829448078) internal successors, (153244), 108530 states have internal predecessors, (153244), 0 states have call successors, (0), 0 states 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 13:24:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108531 states to 108531 states and 153244 transitions. [2023-12-21 13:24:05,361 INFO L78 Accepts]: Start accepts. Automaton has 108531 states and 153244 transitions. Word has length 78 [2023-12-21 13:24:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:05,361 INFO L495 AbstractCegarLoop]: Abstraction has 108531 states and 153244 transitions. [2023-12-21 13:24:05,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 108531 states and 153244 transitions. [2023-12-21 13:24:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:24:05,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:05,371 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:24:05,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:05,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:05,371 INFO L85 PathProgramCache]: Analyzing trace with hash 786752307, now seen corresponding path program 1 times [2023-12-21 13:24:05,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:05,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000878848] [2023-12-21 13:24:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:05,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:05,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:05,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000878848] [2023-12-21 13:24:05,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000878848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:05,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:05,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:24:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692422810] [2023-12-21 13:24:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:05,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:24:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:24:05,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:05,432 INFO L87 Difference]: Start difference. First operand 108531 states and 153244 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:05,775 INFO L93 Difference]: Finished difference Result 174037 states and 244531 transitions. [2023-12-21 13:24:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:24:05,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:24:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:06,187 INFO L225 Difference]: With dead ends: 174037 [2023-12-21 13:24:06,187 INFO L226 Difference]: Without dead ends: 114172 [2023-12-21 13:24:06,200 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 13:24:06,201 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 94 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:06,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 353 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114172 states. [2023-12-21 13:24:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114172 to 107557. [2023-12-21 13:24:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107557 states, 107556 states have (on average 1.3867473688125256) internal successors, (149153), 107556 states have internal predecessors, (149153), 0 states have call successors, (0), 0 states 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 13:24:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107557 states to 107557 states and 149153 transitions. [2023-12-21 13:24:07,747 INFO L78 Accepts]: Start accepts. Automaton has 107557 states and 149153 transitions. Word has length 78 [2023-12-21 13:24:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:07,760 INFO L495 AbstractCegarLoop]: Abstraction has 107557 states and 149153 transitions. [2023-12-21 13:24:07,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 107557 states and 149153 transitions. [2023-12-21 13:24:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:24:07,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:07,783 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:07,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:24:07,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:07,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:07,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1711925903, now seen corresponding path program 1 times [2023-12-21 13:24:07,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772238929] [2023-12-21 13:24:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:07,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:24:07,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:07,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772238929] [2023-12-21 13:24:07,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772238929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:07,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:07,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:07,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527951795] [2023-12-21 13:24:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:07,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:07,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:07,877 INFO L87 Difference]: Start difference. First operand 107557 states and 149153 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:08,628 INFO L93 Difference]: Finished difference Result 239297 states and 334898 transitions. [2023-12-21 13:24:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:24:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:08,831 INFO L225 Difference]: With dead ends: 239297 [2023-12-21 13:24:08,831 INFO L226 Difference]: Without dead ends: 189134 [2023-12-21 13:24:08,860 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 13:24:08,861 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 741 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:08,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1060 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:24:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189134 states. [2023-12-21 13:24:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189134 to 147046. [2023-12-21 13:24:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147046 states, 147045 states have (on average 1.3831956203883164) internal successors, (203392), 147045 states have internal predecessors, (203392), 0 states have call successors, (0), 0 states 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 13:24:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147046 states to 147046 states and 203392 transitions. [2023-12-21 13:24:11,034 INFO L78 Accepts]: Start accepts. Automaton has 147046 states and 203392 transitions. Word has length 78 [2023-12-21 13:24:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:11,034 INFO L495 AbstractCegarLoop]: Abstraction has 147046 states and 203392 transitions. [2023-12-21 13:24:11,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 147046 states and 203392 transitions. [2023-12-21 13:24:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:24:11,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:11,057 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:11,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:24:11,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:11,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash -84065798, now seen corresponding path program 1 times [2023-12-21 13:24:11,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:11,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618859080] [2023-12-21 13:24:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:11,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:24:11,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:11,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618859080] [2023-12-21 13:24:11,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618859080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:11,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:11,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:11,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119170282] [2023-12-21 13:24:11,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:11,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:11,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:11,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:11,177 INFO L87 Difference]: Start difference. First operand 147046 states and 203392 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:12,073 INFO L93 Difference]: Finished difference Result 260631 states and 364263 transitions. [2023-12-21 13:24:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:12,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:24:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:12,392 INFO L225 Difference]: With dead ends: 260631 [2023-12-21 13:24:12,393 INFO L226 Difference]: Without dead ends: 223918 [2023-12-21 13:24:12,453 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 13:24:12,454 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 795 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:12,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 918 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223918 states. [2023-12-21 13:24:14,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223918 to 182370. [2023-12-21 13:24:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182370 states, 182369 states have (on average 1.3842374526372354) internal successors, (252442), 182369 states have internal predecessors, (252442), 0 states have call successors, (0), 0 states 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 13:24:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182370 states to 182370 states and 252442 transitions. [2023-12-21 13:24:14,855 INFO L78 Accepts]: Start accepts. Automaton has 182370 states and 252442 transitions. Word has length 78 [2023-12-21 13:24:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:14,856 INFO L495 AbstractCegarLoop]: Abstraction has 182370 states and 252442 transitions. [2023-12-21 13:24:14,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 182370 states and 252442 transitions. [2023-12-21 13:24:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:24:14,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:14,865 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:14,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:24:14,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:14,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1391804723, now seen corresponding path program 1 times [2023-12-21 13:24:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646973716] [2023-12-21 13:24:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 13:24:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646973716] [2023-12-21 13:24:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646973716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:14,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590527249] [2023-12-21 13:24:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:14,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:14,928 INFO L87 Difference]: Start difference. First operand 182370 states and 252442 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:15,761 INFO L93 Difference]: Finished difference Result 272012 states and 379423 transitions. [2023-12-21 13:24:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:15,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-21 13:24:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:16,100 INFO L225 Difference]: With dead ends: 272012 [2023-12-21 13:24:16,100 INFO L226 Difference]: Without dead ends: 247516 [2023-12-21 13:24:16,167 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 13:24:16,168 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 757 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:16,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 982 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:16,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247516 states. [2023-12-21 13:24:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247516 to 205968. [2023-12-21 13:24:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205968 states, 205967 states have (on average 1.3852413250666369) internal successors, (285314), 205967 states have internal predecessors, (285314), 0 states have call successors, (0), 0 states 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 13:24:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205968 states to 205968 states and 285314 transitions. [2023-12-21 13:24:19,137 INFO L78 Accepts]: Start accepts. Automaton has 205968 states and 285314 transitions. Word has length 78 [2023-12-21 13:24:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:19,137 INFO L495 AbstractCegarLoop]: Abstraction has 205968 states and 285314 transitions. [2023-12-21 13:24:19,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:24:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 205968 states and 285314 transitions. [2023-12-21 13:24:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:24:19,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:19,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:19,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:24:19,145 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:19,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1442337281, now seen corresponding path program 1 times [2023-12-21 13:24:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:19,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153906654] [2023-12-21 13:24:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153906654] [2023-12-21 13:24:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153906654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:24:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052088949] [2023-12-21 13:24:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:24:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:24:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:19,177 INFO L87 Difference]: Start difference. First operand 205968 states and 285314 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:24:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:20,111 INFO L93 Difference]: Finished difference Result 317444 states and 438458 transitions. [2023-12-21 13:24:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:24:20,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:24:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:20,444 INFO L225 Difference]: With dead ends: 317444 [2023-12-21 13:24:20,444 INFO L226 Difference]: Without dead ends: 206043 [2023-12-21 13:24:20,557 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 13:24:20,559 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 88 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:20,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 326 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206043 states. [2023-12-21 13:24:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206043 to 205584. [2023-12-21 13:24:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205584 states, 205583 states have (on average 1.375775234333578) internal successors, (282836), 205583 states have internal predecessors, (282836), 0 states have call successors, (0), 0 states 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 13:24:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205584 states to 205584 states and 282836 transitions. [2023-12-21 13:24:23,732 INFO L78 Accepts]: Start accepts. Automaton has 205584 states and 282836 transitions. Word has length 79 [2023-12-21 13:24:23,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:23,732 INFO L495 AbstractCegarLoop]: Abstraction has 205584 states and 282836 transitions. [2023-12-21 13:24:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:24:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 205584 states and 282836 transitions. [2023-12-21 13:24:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:24:23,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:23,741 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:23,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:24:23,741 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:23,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1727233580, now seen corresponding path program 1 times [2023-12-21 13:24:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199358185] [2023-12-21 13:24:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:24:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199358185] [2023-12-21 13:24:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199358185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:23,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359587250] [2023-12-21 13:24:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:23,814 INFO L87 Difference]: Start difference. First operand 205584 states and 282836 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:24:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:24,926 INFO L93 Difference]: Finished difference Result 295318 states and 408293 transitions. [2023-12-21 13:24:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 80 [2023-12-21 13:24:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:25,343 INFO L225 Difference]: With dead ends: 295318 [2023-12-21 13:24:25,343 INFO L226 Difference]: Without dead ends: 268639 [2023-12-21 13:24:25,446 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 13:24:25,447 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 731 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268639 states. [2023-12-21 13:24:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268639 to 226999. [2023-12-21 13:24:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226999 states, 226998 states have (on average 1.3738535141278778) internal successors, (311862), 226998 states have internal predecessors, (311862), 0 states have call successors, (0), 0 states 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 13:24:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226999 states to 226999 states and 311862 transitions. [2023-12-21 13:24:28,585 INFO L78 Accepts]: Start accepts. Automaton has 226999 states and 311862 transitions. Word has length 80 [2023-12-21 13:24:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:28,587 INFO L495 AbstractCegarLoop]: Abstraction has 226999 states and 311862 transitions. [2023-12-21 13:24:28,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:24:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 226999 states and 311862 transitions. [2023-12-21 13:24:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:24:28,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:28,956 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:28,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:24:28,956 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:28,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 428123231, now seen corresponding path program 1 times [2023-12-21 13:24:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:28,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393354119] [2023-12-21 13:24:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:28,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393354119] [2023-12-21 13:24:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393354119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:29,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:29,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:24:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639136774] [2023-12-21 13:24:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:24:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:24:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:24:29,030 INFO L87 Difference]: Start difference. First operand 226999 states and 311862 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 13:24:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:30,514 INFO L93 Difference]: Finished difference Result 588857 states and 805461 transitions. [2023-12-21 13:24:30,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:24:30,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-21 13:24:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:31,528 INFO L225 Difference]: With dead ends: 588857 [2023-12-21 13:24:31,529 INFO L226 Difference]: Without dead ends: 382689 [2023-12-21 13:24:31,614 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 13:24:31,625 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 90 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:31,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 334 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:24:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382689 states. [2023-12-21 13:24:35,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382689 to 371629. [2023-12-21 13:24:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371629 states, 371628 states have (on average 1.3505602376570118) internal successors, (501906), 371628 states have internal predecessors, (501906), 0 states have call successors, (0), 0 states 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 13:24:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371629 states to 371629 states and 501906 transitions. [2023-12-21 13:24:36,574 INFO L78 Accepts]: Start accepts. Automaton has 371629 states and 501906 transitions. Word has length 81 [2023-12-21 13:24:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:36,574 INFO L495 AbstractCegarLoop]: Abstraction has 371629 states and 501906 transitions. [2023-12-21 13:24:36,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 13:24:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 371629 states and 501906 transitions. [2023-12-21 13:24:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:24:36,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:36,595 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:36,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:24:36,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:36,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1223671146, now seen corresponding path program 1 times [2023-12-21 13:24:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:36,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791760156] [2023-12-21 13:24:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:36,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:24:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791760156] [2023-12-21 13:24:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791760156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:36,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:36,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998482469] [2023-12-21 13:24:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:24:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:24:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:24:36,658 INFO L87 Difference]: Start difference. First operand 371629 states and 501906 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:24:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:39,548 INFO L93 Difference]: Finished difference Result 911035 states and 1227934 transitions. [2023-12-21 13:24:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:24:39,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 83 [2023-12-21 13:24:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:40,607 INFO L225 Difference]: With dead ends: 911035 [2023-12-21 13:24:40,607 INFO L226 Difference]: Without dead ends: 539472 [2023-12-21 13:24:40,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:24:40,820 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 646 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:40,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 179 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:24:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539472 states. [2023-12-21 13:24:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539472 to 536430. [2023-12-21 13:24:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536430 states, 536429 states have (on average 1.3379496634223729) internal successors, (717715), 536429 states have internal predecessors, (717715), 0 states have call successors, (0), 0 states 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 13:24:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536430 states to 536430 states and 717715 transitions. [2023-12-21 13:24:48,550 INFO L78 Accepts]: Start accepts. Automaton has 536430 states and 717715 transitions. Word has length 83 [2023-12-21 13:24:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:48,550 INFO L495 AbstractCegarLoop]: Abstraction has 536430 states and 717715 transitions. [2023-12-21 13:24:48,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states 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 13:24:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 536430 states and 717715 transitions. [2023-12-21 13:24:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:24:48,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:48,566 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:24:48,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:24:48,566 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:48,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash -289513071, now seen corresponding path program 1 times [2023-12-21 13:24:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:48,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703008631] [2023-12-21 13:24:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:24:48,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:48,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703008631] [2023-12-21 13:24:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703008631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:48,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:48,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:48,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471092695] [2023-12-21 13:24:48,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:48,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:24:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:24:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:24:48,715 INFO L87 Difference]: Start difference. First operand 536430 states and 717715 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:24:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:53,418 INFO L93 Difference]: Finished difference Result 1284147 states and 1714811 transitions. [2023-12-21 13:24:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:24:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 83 [2023-12-21 13:24:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:55,256 INFO L225 Difference]: With dead ends: 1284147 [2023-12-21 13:24:55,256 INFO L226 Difference]: Without dead ends: 747846 [2023-12-21 13:24:55,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:24:55,832 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 626 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:55,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 187 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:24:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747846 states. [2023-12-21 13:25:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747846 to 745007. [2023-12-21 13:25:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745007 states, 745006 states have (on average 1.3252175150267247) internal successors, (987295), 745006 states have internal predecessors, (987295), 0 states have call successors, (0), 0 states 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 13:25:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745007 states to 745007 states and 987295 transitions. [2023-12-21 13:25:08,045 INFO L78 Accepts]: Start accepts. Automaton has 745007 states and 987295 transitions. Word has length 83 [2023-12-21 13:25:08,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:08,060 INFO L495 AbstractCegarLoop]: Abstraction has 745007 states and 987295 transitions. [2023-12-21 13:25:08,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 13:25:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 745007 states and 987295 transitions. [2023-12-21 13:25:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:25:08,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:08,095 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:25:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:25:08,096 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:08,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:08,097 INFO L85 PathProgramCache]: Analyzing trace with hash 697915126, now seen corresponding path program 1 times [2023-12-21 13:25:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:08,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155748417] [2023-12-21 13:25:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:08,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155748417] [2023-12-21 13:25:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155748417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514828469] [2023-12-21 13:25:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:08,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:08,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:08,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:25:08,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:25:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:08,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:25:08,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:08,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:08,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514828469] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:08,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:08,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-21 13:25:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985708218] [2023-12-21 13:25:08,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:08,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:25:08,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:25:08,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:25:08,727 INFO L87 Difference]: Start difference. First operand 745007 states and 987295 transitions. Second operand has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 13:25:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:16,879 INFO L93 Difference]: Finished difference Result 2140445 states and 2836632 transitions. [2023-12-21 13:25:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:25:16,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 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 83 [2023-12-21 13:25:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:21,187 INFO L225 Difference]: With dead ends: 2140445 [2023-12-21 13:25:21,187 INFO L226 Difference]: Without dead ends: 1502247 [2023-12-21 13:25:21,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:25:21,770 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 2617 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:21,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 626 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:25:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502247 states. [2023-12-21 13:25:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502247 to 807734. [2023-12-21 13:25:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807734 states, 807733 states have (on average 1.32634670119953) internal successors, (1071334), 807733 states have internal predecessors, (1071334), 0 states have call successors, (0), 0 states 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 13:25:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807734 states to 807734 states and 1071334 transitions. [2023-12-21 13:25:39,821 INFO L78 Accepts]: Start accepts. Automaton has 807734 states and 1071334 transitions. Word has length 83 [2023-12-21 13:25:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:39,821 INFO L495 AbstractCegarLoop]: Abstraction has 807734 states and 1071334 transitions. [2023-12-21 13:25:39,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 10 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 13:25:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 807734 states and 1071334 transitions. [2023-12-21 13:25:39,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:25:39,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:39,866 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:25:39,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 13:25:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-21 13:25:40,067 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:40,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1151919547, now seen corresponding path program 1 times [2023-12-21 13:25:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485141419] [2023-12-21 13:25:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 13:25:40,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485141419] [2023-12-21 13:25:40,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485141419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:40,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:40,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:25:40,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133024147] [2023-12-21 13:25:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:40,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:25:40,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:25:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:25:40,159 INFO L87 Difference]: Start difference. First operand 807734 states and 1071334 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 13:25:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:47,350 INFO L93 Difference]: Finished difference Result 1893030 states and 2507144 transitions. [2023-12-21 13:25:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:25:47,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 83 [2023-12-21 13:25:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:50,048 INFO L225 Difference]: With dead ends: 1893030 [2023-12-21 13:25:50,049 INFO L226 Difference]: Without dead ends: 1085520 [2023-12-21 13:25:50,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:25:50,790 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 608 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:50,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 195 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085520 states.