/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/eca-rers2012/Problem17_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:40:05,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:40:05,304 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:40:05,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:40:05,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:40:05,336 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:40:05,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:40:05,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:40:05,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:40:05,338 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:40:05,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:40:05,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:40:05,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:40:05,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:40:05,339 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:40:05,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:40:05,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:40:05,340 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:40:05,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:40:05,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:40:05,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:40:05,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:40:05,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:40:05,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:40:05,343 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:40:05,344 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:40:05,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:40:05,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:40:05,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:40:05,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:40:05,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:40:05,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:40:05,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:40:05,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:40:05,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:40:05,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:40:05,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:40:05,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:40:05,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:40:05,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:40:05,347 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:40:05,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:40:05,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:40:05,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:40:05,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:40:05,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:40:05,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:40:05,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:40:05,565 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:40:05,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2023-12-20 17:40:06,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:40:07,008 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:40:07,009 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2023-12-20 17:40:07,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b02a7e4/1213bb15254d4dc1bab2fb614731041c/FLAGc6b3fb2f3 [2023-12-20 17:40:07,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4b02a7e4/1213bb15254d4dc1bab2fb614731041c [2023-12-20 17:40:07,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:40:07,044 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:40:07,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:40:07,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:40:07,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:40:07,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:07,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b74b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07, skipping insertion in model container [2023-12-20 17:40:07,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:07,131 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:40:07,340 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56.c[9824,9837] [2023-12-20 17:40:07,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:40:07,744 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:40:07,765 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56.c[9824,9837] [2023-12-20 17:40:07,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:40:07,944 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:40:07,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07 WrapperNode [2023-12-20 17:40:07,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:40:07,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:40:07,945 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:40:07,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:40:07,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,147 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:40:08,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:40:08,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:40:08,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:40:08,148 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:40:08,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,272 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 17:40:08,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:40:08,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:40:08,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:40:08,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:40:08,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (1/1) ... [2023-12-20 17:40:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:40:08,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:40:08,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 17:40:08,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 17:40:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:40:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:40:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:40:08,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:40:08,631 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:40:08,633 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:40:10,867 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:40:10,904 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:40:10,905 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:40:10,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:40:10 BoogieIcfgContainer [2023-12-20 17:40:10,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:40:10,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:40:10,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:40:10,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:40:10,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:40:07" (1/3) ... [2023-12-20 17:40:10,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548f1c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:40:10, skipping insertion in model container [2023-12-20 17:40:10,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:40:07" (2/3) ... [2023-12-20 17:40:10,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548f1c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:40:10, skipping insertion in model container [2023-12-20 17:40:10,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:40:10" (3/3) ... [2023-12-20 17:40:10,911 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56.c [2023-12-20 17:40:10,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:40:10,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:40:10,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:40:10,991 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;@605065ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:40:10,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:40:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:11,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 17:40:11,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:11,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:11,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:11,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2097988258, now seen corresponding path program 1 times [2023-12-20 17:40:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:11,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130049468] [2023-12-20 17:40:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:11,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:11,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130049468] [2023-12-20 17:40:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130049468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:11,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:40:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744669648] [2023-12-20 17:40:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:40:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:40:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:40:11,209 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:11,250 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-20 17:40:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:40:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 17:40:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:11,261 INFO L225 Difference]: With dead ends: 1055 [2023-12-20 17:40:11,261 INFO L226 Difference]: Without dead ends: 526 [2023-12-20 17:40:11,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:40:11,273 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:11,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:40:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-20 17:40:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-20 17:40:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-20 17:40:11,331 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 65 [2023-12-20 17:40:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:11,332 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-20 17:40:11,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-20 17:40:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 17:40:11,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:11,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:11,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:40:11,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:11,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash 764633794, now seen corresponding path program 1 times [2023-12-20 17:40:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985534157] [2023-12-20 17:40:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:11,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985534157] [2023-12-20 17:40:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985534157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:40:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694336355] [2023-12-20 17:40:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:11,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:11,515 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:13,583 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-20 17:40:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-20 17:40:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:13,588 INFO L225 Difference]: With dead ends: 1501 [2023-12-20 17:40:13,588 INFO L226 Difference]: Without dead ends: 976 [2023-12-20 17:40:13,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:13,591 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 406 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:13,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:40:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-20 17:40:13,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-20 17:40:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-20 17:40:13,647 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 65 [2023-12-20 17:40:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:13,648 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-20 17:40:13,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:13,649 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-20 17:40:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 17:40:13,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:13,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:13,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:40:13,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:13,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1406011754, now seen corresponding path program 1 times [2023-12-20 17:40:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:13,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665128752] [2023-12-20 17:40:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:13,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665128752] [2023-12-20 17:40:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665128752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:13,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:13,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:40:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726628264] [2023-12-20 17:40:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:13,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:13,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:13,897 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:15,859 INFO L93 Difference]: Finished difference Result 2814 states and 4381 transitions. [2023-12-20 17:40:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:15,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-12-20 17:40:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:15,865 INFO L225 Difference]: With dead ends: 2814 [2023-12-20 17:40:15,865 INFO L226 Difference]: Without dead ends: 1845 [2023-12-20 17:40:15,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:15,869 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:15,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 578 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:40:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2023-12-20 17:40:15,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1840. [2023-12-20 17:40:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1839 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2484 transitions. [2023-12-20 17:40:15,898 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2484 transitions. Word has length 132 [2023-12-20 17:40:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:15,899 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2484 transitions. [2023-12-20 17:40:15,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2484 transitions. [2023-12-20 17:40:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 17:40:15,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:15,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:15,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:40:15,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:15,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash 513799246, now seen corresponding path program 1 times [2023-12-20 17:40:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:15,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926760871] [2023-12-20 17:40:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:16,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926760871] [2023-12-20 17:40:16,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926760871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:16,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885296636] [2023-12-20 17:40:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:16,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:16,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:16,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:16,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:16,086 INFO L87 Difference]: Start difference. First operand 1840 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:17,881 INFO L93 Difference]: Finished difference Result 4551 states and 6284 transitions. [2023-12-20 17:40:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:17,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-20 17:40:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:17,889 INFO L225 Difference]: With dead ends: 4551 [2023-12-20 17:40:17,889 INFO L226 Difference]: Without dead ends: 2712 [2023-12-20 17:40:17,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:17,892 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 441 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:17,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:40:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2023-12-20 17:40:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2023-12-20 17:40:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3008490217792543) internal successors, (3524), 2709 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3524 transitions. [2023-12-20 17:40:17,929 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3524 transitions. Word has length 135 [2023-12-20 17:40:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:17,930 INFO L495 AbstractCegarLoop]: Abstraction has 2710 states and 3524 transitions. [2023-12-20 17:40:17,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:17,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3524 transitions. [2023-12-20 17:40:17,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-20 17:40:17,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:17,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:17,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:40:17,943 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:17,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash 279976217, now seen corresponding path program 1 times [2023-12-20 17:40:17,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:17,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076316604] [2023-12-20 17:40:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:17,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 17:40:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076316604] [2023-12-20 17:40:18,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076316604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:18,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:18,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:40:18,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702021411] [2023-12-20 17:40:18,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:18,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:18,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:18,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:18,106 INFO L87 Difference]: Start difference. First operand 2710 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:19,711 INFO L93 Difference]: Finished difference Result 7983 states and 10363 transitions. [2023-12-20 17:40:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-20 17:40:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:19,722 INFO L225 Difference]: With dead ends: 7983 [2023-12-20 17:40:19,722 INFO L226 Difference]: Without dead ends: 4420 [2023-12-20 17:40:19,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:19,730 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:19,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 17:40:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-20 17:40:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3565. [2023-12-20 17:40:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3564 states have (on average 1.1778900112233446) internal successors, (4198), 3564 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4198 transitions. [2023-12-20 17:40:19,780 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4198 transitions. Word has length 204 [2023-12-20 17:40:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:19,781 INFO L495 AbstractCegarLoop]: Abstraction has 3565 states and 4198 transitions. [2023-12-20 17:40:19,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4198 transitions. [2023-12-20 17:40:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-20 17:40:19,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:19,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:40:19,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:40:19,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:19,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:19,784 INFO L85 PathProgramCache]: Analyzing trace with hash -577424859, now seen corresponding path program 1 times [2023-12-20 17:40:19,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:19,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228687581] [2023-12-20 17:40:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:19,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228687581] [2023-12-20 17:40:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228687581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:19,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718761302] [2023-12-20 17:40:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:19,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:19,937 INFO L87 Difference]: Start difference. First operand 3565 states and 4198 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:21,366 INFO L93 Difference]: Finished difference Result 9262 states and 11077 transitions. [2023-12-20 17:40:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:21,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2023-12-20 17:40:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:21,379 INFO L225 Difference]: With dead ends: 9262 [2023-12-20 17:40:21,379 INFO L226 Difference]: Without dead ends: 5698 [2023-12-20 17:40:21,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:21,384 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:21,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:40:21,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2023-12-20 17:40:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 5698. [2023-12-20 17:40:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5697 states have (on average 1.1597331929085484) internal successors, (6607), 5697 states have internal predecessors, (6607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6607 transitions. [2023-12-20 17:40:21,447 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6607 transitions. Word has length 217 [2023-12-20 17:40:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:21,448 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 6607 transitions. [2023-12-20 17:40:21,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6607 transitions. [2023-12-20 17:40:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-20 17:40:21,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:21,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:40:21,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:40:21,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:21,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1730723872, now seen corresponding path program 1 times [2023-12-20 17:40:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:21,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563202857] [2023-12-20 17:40:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:21,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:21,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563202857] [2023-12-20 17:40:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563202857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:21,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962149313] [2023-12-20 17:40:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:40:21,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:40:21,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:40:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:21,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:40:21,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:40:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:22,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:40:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962149313] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:22,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:40:22,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:40:22,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430023148] [2023-12-20 17:40:22,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:22,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:22,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:22,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:40:22,268 INFO L87 Difference]: Start difference. First operand 5698 states and 6607 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:24,855 INFO L93 Difference]: Finished difference Result 16960 states and 19952 transitions. [2023-12-20 17:40:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:24,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2023-12-20 17:40:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:24,880 INFO L225 Difference]: With dead ends: 16960 [2023-12-20 17:40:24,880 INFO L226 Difference]: Without dead ends: 10383 [2023-12-20 17:40:24,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:40:24,888 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 882 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:24,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 163 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:40:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2023-12-20 17:40:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10378. [2023-12-20 17:40:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10378 states, 10377 states have (on average 1.1553435482316663) internal successors, (11989), 10377 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 11989 transitions. [2023-12-20 17:40:25,018 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 11989 transitions. Word has length 219 [2023-12-20 17:40:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:25,019 INFO L495 AbstractCegarLoop]: Abstraction has 10378 states and 11989 transitions. [2023-12-20 17:40:25,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 11989 transitions. [2023-12-20 17:40:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-20 17:40:25,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:25,022 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:25,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 17:40:25,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:25,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:25,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1934631330, now seen corresponding path program 1 times [2023-12-20 17:40:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:25,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179047332] [2023-12-20 17:40:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 191 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:25,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:25,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179047332] [2023-12-20 17:40:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179047332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787804333] [2023-12-20 17:40:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:40:25,562 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:40:25,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:40:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:25,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:40:25,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:40:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 268 proven. 73 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 17:40:25,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:40:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 17:40:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787804333] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:40:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-20 17:40:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463895028] [2023-12-20 17:40:25,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:25,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:40:25,948 INFO L87 Difference]: Start difference. First operand 10378 states and 11989 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:28,410 INFO L93 Difference]: Finished difference Result 28864 states and 33387 transitions. [2023-12-20 17:40:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 293 [2023-12-20 17:40:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:28,466 INFO L225 Difference]: With dead ends: 28864 [2023-12-20 17:40:28,466 INFO L226 Difference]: Without dead ends: 18487 [2023-12-20 17:40:28,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:40:28,476 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 839 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:28,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 183 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:40:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18487 states. [2023-12-20 17:40:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18487 to 18481. [2023-12-20 17:40:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18481 states, 18480 states have (on average 1.1429112554112555) internal successors, (21121), 18480 states have internal predecessors, (21121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18481 states to 18481 states and 21121 transitions. [2023-12-20 17:40:28,694 INFO L78 Accepts]: Start accepts. Automaton has 18481 states and 21121 transitions. Word has length 293 [2023-12-20 17:40:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:28,694 INFO L495 AbstractCegarLoop]: Abstraction has 18481 states and 21121 transitions. [2023-12-20 17:40:28,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 18481 states and 21121 transitions. [2023-12-20 17:40:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-12-20 17:40:28,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:28,700 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:28,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:40:28,907 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,SelfDestructingSolverStorable7 [2023-12-20 17:40:28,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:28,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2077511684, now seen corresponding path program 1 times [2023-12-20 17:40:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:28,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586142972] [2023-12-20 17:40:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-20 17:40:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586142972] [2023-12-20 17:40:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586142972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:29,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:29,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678837606] [2023-12-20 17:40:29,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:29,228 INFO L87 Difference]: Start difference. First operand 18481 states and 21121 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:30,879 INFO L93 Difference]: Finished difference Result 50635 states and 57338 transitions. [2023-12-20 17:40:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 398 [2023-12-20 17:40:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:30,930 INFO L225 Difference]: With dead ends: 50635 [2023-12-20 17:40:30,930 INFO L226 Difference]: Without dead ends: 32155 [2023-12-20 17:40:30,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:30,952 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 426 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:30,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 666 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:40:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32155 states. [2023-12-20 17:40:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32155 to 29569. [2023-12-20 17:40:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29569 states, 29568 states have (on average 1.1311214826839826) internal successors, (33445), 29568 states have internal predecessors, (33445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29569 states to 29569 states and 33445 transitions. [2023-12-20 17:40:31,392 INFO L78 Accepts]: Start accepts. Automaton has 29569 states and 33445 transitions. Word has length 398 [2023-12-20 17:40:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:31,392 INFO L495 AbstractCegarLoop]: Abstraction has 29569 states and 33445 transitions. [2023-12-20 17:40:31,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 29569 states and 33445 transitions. [2023-12-20 17:40:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-20 17:40:31,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:31,400 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:31,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:40:31,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:31,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1375952895, now seen corresponding path program 1 times [2023-12-20 17:40:31,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:31,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135902583] [2023-12-20 17:40:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:31,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-20 17:40:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:31,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135902583] [2023-12-20 17:40:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135902583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:31,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715051884] [2023-12-20 17:40:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:31,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:31,675 INFO L87 Difference]: Start difference. First operand 29569 states and 33445 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:33,338 INFO L93 Difference]: Finished difference Result 68520 states and 77907 transitions. [2023-12-20 17:40:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 399 [2023-12-20 17:40:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:33,387 INFO L225 Difference]: With dead ends: 68520 [2023-12-20 17:40:33,387 INFO L226 Difference]: Without dead ends: 38951 [2023-12-20 17:40:33,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:33,582 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 436 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:33,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 639 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:40:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38951 states. [2023-12-20 17:40:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38951 to 36817. [2023-12-20 17:40:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36817 states, 36816 states have (on average 1.1341264667535853) internal successors, (41754), 36816 states have internal predecessors, (41754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36817 states to 36817 states and 41754 transitions. [2023-12-20 17:40:33,956 INFO L78 Accepts]: Start accepts. Automaton has 36817 states and 41754 transitions. Word has length 399 [2023-12-20 17:40:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:33,957 INFO L495 AbstractCegarLoop]: Abstraction has 36817 states and 41754 transitions. [2023-12-20 17:40:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 36817 states and 41754 transitions. [2023-12-20 17:40:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2023-12-20 17:40:33,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:33,963 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:40:33,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:33,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1633804168, now seen corresponding path program 1 times [2023-12-20 17:40:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323696691] [2023-12-20 17:40:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 17:40:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:34,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323696691] [2023-12-20 17:40:34,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323696691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:34,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:34,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:40:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390439380] [2023-12-20 17:40:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:34,373 INFO L87 Difference]: Start difference. First operand 36817 states and 41754 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:37,011 INFO L93 Difference]: Finished difference Result 99667 states and 112881 transitions. [2023-12-20 17:40:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 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 403 [2023-12-20 17:40:37,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:37,086 INFO L225 Difference]: With dead ends: 99667 [2023-12-20 17:40:37,086 INFO L226 Difference]: Without dead ends: 62851 [2023-12-20 17:40:37,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:37,102 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 826 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:37,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 189 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:40:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62851 states. [2023-12-20 17:40:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62851 to 57735. [2023-12-20 17:40:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57735 states, 57734 states have (on average 1.1359684068313298) internal successors, (65584), 57734 states have internal predecessors, (65584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57735 states to 57735 states and 65584 transitions. [2023-12-20 17:40:37,865 INFO L78 Accepts]: Start accepts. Automaton has 57735 states and 65584 transitions. Word has length 403 [2023-12-20 17:40:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:37,866 INFO L495 AbstractCegarLoop]: Abstraction has 57735 states and 65584 transitions. [2023-12-20 17:40:37,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 57735 states and 65584 transitions. [2023-12-20 17:40:37,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-20 17:40:37,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:37,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:37,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:40:37,876 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:37,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash 942603400, now seen corresponding path program 1 times [2023-12-20 17:40:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662721347] [2023-12-20 17:40:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:40:38,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662721347] [2023-12-20 17:40:38,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662721347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:38,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:38,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:38,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891089762] [2023-12-20 17:40:38,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:38,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:40:38,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:40:38,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:38,159 INFO L87 Difference]: Start difference. First operand 57735 states and 65584 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:40,581 INFO L93 Difference]: Finished difference Result 120144 states and 136109 transitions. [2023-12-20 17:40:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:40:40,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 404 [2023-12-20 17:40:40,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:40,655 INFO L225 Difference]: With dead ends: 120144 [2023-12-20 17:40:40,655 INFO L226 Difference]: Without dead ends: 61985 [2023-12-20 17:40:40,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:40:40,678 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 546 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:40,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 246 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:40:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61985 states. [2023-12-20 17:40:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61985 to 58160. [2023-12-20 17:40:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58160 states, 58159 states have (on average 1.1350091989202016) internal successors, (66011), 58159 states have internal predecessors, (66011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58160 states to 58160 states and 66011 transitions. [2023-12-20 17:40:41,295 INFO L78 Accepts]: Start accepts. Automaton has 58160 states and 66011 transitions. Word has length 404 [2023-12-20 17:40:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:41,296 INFO L495 AbstractCegarLoop]: Abstraction has 58160 states and 66011 transitions. [2023-12-20 17:40:41,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 58160 states and 66011 transitions. [2023-12-20 17:40:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-20 17:40:41,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:41,302 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-20 17:40:41,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:40:41,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:41,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1141334510, now seen corresponding path program 1 times [2023-12-20 17:40:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913813510] [2023-12-20 17:40:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 403 proven. 64 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:40:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913813510] [2023-12-20 17:40:41,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913813510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:41,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008934686] [2023-12-20 17:40:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:41,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:41,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:40:41,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:40:41,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:40:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:42,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:40:42,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:40:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 403 proven. 64 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:40:42,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:40:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-20 17:40:42,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008934686] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:40:42,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:40:42,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-12-20 17:40:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217688268] [2023-12-20 17:40:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:40:42,569 INFO L87 Difference]: Start difference. First operand 58160 states and 66011 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:44,282 INFO L93 Difference]: Finished difference Result 118855 states and 134744 transitions. [2023-12-20 17:40:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:44,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 418 [2023-12-20 17:40:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:44,361 INFO L225 Difference]: With dead ends: 118855 [2023-12-20 17:40:44,361 INFO L226 Difference]: Without dead ends: 60689 [2023-12-20 17:40:44,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:40:44,401 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 423 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:44,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 710 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:40:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60689 states. [2023-12-20 17:40:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60689 to 60219. [2023-12-20 17:40:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60219 states, 60218 states have (on average 1.1171410541698497) internal successors, (67272), 60218 states have internal predecessors, (67272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60219 states to 60219 states and 67272 transitions. [2023-12-20 17:40:45,239 INFO L78 Accepts]: Start accepts. Automaton has 60219 states and 67272 transitions. Word has length 418 [2023-12-20 17:40:45,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:45,240 INFO L495 AbstractCegarLoop]: Abstraction has 60219 states and 67272 transitions. [2023-12-20 17:40:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 60219 states and 67272 transitions. [2023-12-20 17:40:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2023-12-20 17:40:45,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:45,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:45,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 17:40:45,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:40:45,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:45,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1533367513, now seen corresponding path program 1 times [2023-12-20 17:40:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:45,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418470184] [2023-12-20 17:40:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-20 17:40:46,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:46,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418470184] [2023-12-20 17:40:46,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418470184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:46,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:46,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:46,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166238640] [2023-12-20 17:40:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:46,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:46,050 INFO L87 Difference]: Start difference. First operand 60219 states and 67272 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:47,959 INFO L93 Difference]: Finished difference Result 131516 states and 146692 transitions. [2023-12-20 17:40:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 631 [2023-12-20 17:40:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:48,039 INFO L225 Difference]: With dead ends: 131516 [2023-12-20 17:40:48,039 INFO L226 Difference]: Without dead ends: 70023 [2023-12-20 17:40:48,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:48,074 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 384 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:48,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 811 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:40:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70023 states. [2023-12-20 17:40:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70023 to 69158. [2023-12-20 17:40:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69158 states, 69157 states have (on average 1.1080006362334978) internal successors, (76626), 69157 states have internal predecessors, (76626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69158 states to 69158 states and 76626 transitions. [2023-12-20 17:40:48,928 INFO L78 Accepts]: Start accepts. Automaton has 69158 states and 76626 transitions. Word has length 631 [2023-12-20 17:40:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:48,928 INFO L495 AbstractCegarLoop]: Abstraction has 69158 states and 76626 transitions. [2023-12-20 17:40:48,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 69158 states and 76626 transitions. [2023-12-20 17:40:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-20 17:40:48,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:48,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:40:48,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:48,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash -556740669, now seen corresponding path program 1 times [2023-12-20 17:40:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:48,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400699433] [2023-12-20 17:40:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:48,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-12-20 17:40:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400699433] [2023-12-20 17:40:49,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400699433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:49,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:49,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110766179] [2023-12-20 17:40:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:49,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:49,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:49,283 INFO L87 Difference]: Start difference. First operand 69158 states and 76626 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:50,946 INFO L93 Difference]: Finished difference Result 145546 states and 161534 transitions. [2023-12-20 17:40:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 642 [2023-12-20 17:40:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:51,027 INFO L225 Difference]: With dead ends: 145546 [2023-12-20 17:40:51,027 INFO L226 Difference]: Without dead ends: 76386 [2023-12-20 17:40:51,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:51,053 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 499 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:51,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 673 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:40:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76386 states. [2023-12-20 17:40:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76386 to 76381. [2023-12-20 17:40:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76381 states, 76380 states have (on average 1.1021602513747055) internal successors, (84183), 76380 states have internal predecessors, (84183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76381 states to 76381 states and 84183 transitions. [2023-12-20 17:40:52,046 INFO L78 Accepts]: Start accepts. Automaton has 76381 states and 84183 transitions. Word has length 642 [2023-12-20 17:40:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:52,046 INFO L495 AbstractCegarLoop]: Abstraction has 76381 states and 84183 transitions. [2023-12-20 17:40:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 76381 states and 84183 transitions. [2023-12-20 17:40:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-20 17:40:52,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:52,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:52,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:40:52,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1041835093, now seen corresponding path program 1 times [2023-12-20 17:40:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167578826] [2023-12-20 17:40:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:52,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2023-12-20 17:40:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:52,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167578826] [2023-12-20 17:40:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167578826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:52,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:52,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:40:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119733674] [2023-12-20 17:40:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:40:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:40:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:40:52,999 INFO L87 Difference]: Start difference. First operand 76381 states and 84183 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:55,170 INFO L93 Difference]: Finished difference Result 152417 states and 167976 transitions. [2023-12-20 17:40:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:40:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 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 748 [2023-12-20 17:40:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:55,252 INFO L225 Difference]: With dead ends: 152417 [2023-12-20 17:40:55,253 INFO L226 Difference]: Without dead ends: 76364 [2023-12-20 17:40:55,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:40:55,285 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 847 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:55,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 154 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:40:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76364 states. [2023-12-20 17:40:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76364 to 74228. [2023-12-20 17:40:56,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74228 states, 74227 states have (on average 1.0969862718417827) internal successors, (81426), 74227 states have internal predecessors, (81426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74228 states to 74228 states and 81426 transitions. [2023-12-20 17:40:56,121 INFO L78 Accepts]: Start accepts. Automaton has 74228 states and 81426 transitions. Word has length 748 [2023-12-20 17:40:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:56,121 INFO L495 AbstractCegarLoop]: Abstraction has 74228 states and 81426 transitions. [2023-12-20 17:40:56,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 74228 states and 81426 transitions. [2023-12-20 17:40:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-12-20 17:40:56,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:56,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:56,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:40:56,155 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:56,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1073116384, now seen corresponding path program 1 times [2023-12-20 17:40:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:56,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464748194] [2023-12-20 17:40:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:40:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-20 17:40:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:40:56,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464748194] [2023-12-20 17:40:56,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464748194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:40:56,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:40:56,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:40:56,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582555667] [2023-12-20 17:40:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:40:56,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:40:56,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:40:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:40:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:56,708 INFO L87 Difference]: Start difference. First operand 74228 states and 81426 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:40:58,439 INFO L93 Difference]: Finished difference Result 155289 states and 170401 transitions. [2023-12-20 17:40:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:40:58,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 815 [2023-12-20 17:40:58,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:40:58,531 INFO L225 Difference]: With dead ends: 155289 [2023-12-20 17:40:58,532 INFO L226 Difference]: Without dead ends: 81487 [2023-12-20 17:40:58,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:40:58,575 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 482 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:40:58,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 240 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:40:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81487 states. [2023-12-20 17:40:59,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81487 to 81033. [2023-12-20 17:40:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81033 states, 81032 states have (on average 1.089804028038306) internal successors, (88309), 81032 states have internal predecessors, (88309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81033 states to 81033 states and 88309 transitions. [2023-12-20 17:40:59,559 INFO L78 Accepts]: Start accepts. Automaton has 81033 states and 88309 transitions. Word has length 815 [2023-12-20 17:40:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:40:59,559 INFO L495 AbstractCegarLoop]: Abstraction has 81033 states and 88309 transitions. [2023-12-20 17:40:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:40:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 81033 states and 88309 transitions. [2023-12-20 17:40:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2023-12-20 17:40:59,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:40:59,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:40:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 17:40:59,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:40:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:40:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1335679421, now seen corresponding path program 1 times [2023-12-20 17:40:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:40:59,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200020291] [2023-12-20 17:40:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:40:59,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:40:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 931 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:41:00,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:00,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200020291] [2023-12-20 17:41:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200020291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:00,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:41:00,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607410052] [2023-12-20 17:41:00,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:41:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:41:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:00,353 INFO L87 Difference]: Start difference. First operand 81033 states and 88309 transitions. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:02,789 INFO L93 Difference]: Finished difference Result 180790 states and 196706 transitions. [2023-12-20 17:41:02,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:41:02,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 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 871 [2023-12-20 17:41:02,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:02,918 INFO L225 Difference]: With dead ends: 180790 [2023-12-20 17:41:02,918 INFO L226 Difference]: Without dead ends: 100183 [2023-12-20 17:41:02,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:02,973 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 347 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:02,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 635 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:41:03,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100183 states. [2023-12-20 17:41:04,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100183 to 96346. [2023-12-20 17:41:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96346 states, 96345 states have (on average 1.0879132285017385) internal successors, (104815), 96345 states have internal predecessors, (104815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96346 states to 96346 states and 104815 transitions. [2023-12-20 17:41:04,339 INFO L78 Accepts]: Start accepts. Automaton has 96346 states and 104815 transitions. Word has length 871 [2023-12-20 17:41:04,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:04,340 INFO L495 AbstractCegarLoop]: Abstraction has 96346 states and 104815 transitions. [2023-12-20 17:41:04,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 96346 states and 104815 transitions. [2023-12-20 17:41:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2023-12-20 17:41:04,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:04,402 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:04,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:41:04,402 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:04,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1311358393, now seen corresponding path program 1 times [2023-12-20 17:41:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302694883] [2023-12-20 17:41:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:41:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302694883] [2023-12-20 17:41:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302694883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:05,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754958667] [2023-12-20 17:41:05,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:05,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:05,227 INFO L87 Difference]: Start difference. First operand 96346 states and 104815 transitions. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:07,156 INFO L93 Difference]: Finished difference Result 203772 states and 221749 transitions. [2023-12-20 17:41:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:07,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 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 934 [2023-12-20 17:41:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:07,283 INFO L225 Difference]: With dead ends: 203772 [2023-12-20 17:41:07,283 INFO L226 Difference]: Without dead ends: 107852 [2023-12-20 17:41:07,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:07,323 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 194 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:07,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 259 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:41:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107852 states. [2023-12-20 17:41:08,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107852 to 103583. [2023-12-20 17:41:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103583 states, 103582 states have (on average 1.0836824930972562) internal successors, (112250), 103582 states have internal predecessors, (112250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103583 states to 103583 states and 112250 transitions. [2023-12-20 17:41:08,681 INFO L78 Accepts]: Start accepts. Automaton has 103583 states and 112250 transitions. Word has length 934 [2023-12-20 17:41:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:08,682 INFO L495 AbstractCegarLoop]: Abstraction has 103583 states and 112250 transitions. [2023-12-20 17:41:08,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 103583 states and 112250 transitions. [2023-12-20 17:41:08,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2023-12-20 17:41:08,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:08,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:08,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:41:08,746 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:08,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1527669064, now seen corresponding path program 1 times [2023-12-20 17:41:08,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187120674] [2023-12-20 17:41:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-20 17:41:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187120674] [2023-12-20 17:41:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187120674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:09,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:09,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:09,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324417783] [2023-12-20 17:41:09,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:09,549 INFO L87 Difference]: Start difference. First operand 103583 states and 112250 transitions. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:11,492 INFO L93 Difference]: Finished difference Result 228433 states and 247788 transitions. [2023-12-20 17:41:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 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 958 [2023-12-20 17:41:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:11,638 INFO L225 Difference]: With dead ends: 228433 [2023-12-20 17:41:11,638 INFO L226 Difference]: Without dead ends: 125276 [2023-12-20 17:41:11,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:11,702 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 381 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:11,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 270 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:41:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125276 states. [2023-12-20 17:41:13,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125276 to 123570. [2023-12-20 17:41:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123570 states, 123569 states have (on average 1.0769853280353487) internal successors, (133082), 123569 states have internal predecessors, (133082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123570 states to 123570 states and 133082 transitions. [2023-12-20 17:41:13,297 INFO L78 Accepts]: Start accepts. Automaton has 123570 states and 133082 transitions. Word has length 958 [2023-12-20 17:41:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:13,297 INFO L495 AbstractCegarLoop]: Abstraction has 123570 states and 133082 transitions. [2023-12-20 17:41:13,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 123570 states and 133082 transitions. [2023-12-20 17:41:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2023-12-20 17:41:13,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:13,364 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:13,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 17:41:13,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:13,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash -142221107, now seen corresponding path program 1 times [2023-12-20 17:41:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057646803] [2023-12-20 17:41:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 1183 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:41:14,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057646803] [2023-12-20 17:41:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057646803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:14,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:41:14,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136930628] [2023-12-20 17:41:14,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:41:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:41:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:14,383 INFO L87 Difference]: Start difference. First operand 123570 states and 133082 transitions. Second operand has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:17,345 INFO L93 Difference]: Finished difference Result 277376 states and 298255 transitions. [2023-12-20 17:41:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:41:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 965 [2023-12-20 17:41:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:17,532 INFO L225 Difference]: With dead ends: 277376 [2023-12-20 17:41:17,533 INFO L226 Difference]: Without dead ends: 153807 [2023-12-20 17:41:17,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:17,590 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 360 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:17,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 232 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:41:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153807 states. [2023-12-20 17:41:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153807 to 147422. [2023-12-20 17:41:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147422 states, 147421 states have (on average 1.0726694297284647) internal successors, (158134), 147421 states have internal predecessors, (158134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147422 states to 147422 states and 158134 transitions. [2023-12-20 17:41:19,705 INFO L78 Accepts]: Start accepts. Automaton has 147422 states and 158134 transitions. Word has length 965 [2023-12-20 17:41:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:19,706 INFO L495 AbstractCegarLoop]: Abstraction has 147422 states and 158134 transitions. [2023-12-20 17:41:19,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 147422 states and 158134 transitions. [2023-12-20 17:41:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2023-12-20 17:41:19,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:19,782 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:19,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:41:19,782 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:19,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1966087669, now seen corresponding path program 1 times [2023-12-20 17:41:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:19,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325046577] [2023-12-20 17:41:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 1193 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-20 17:41:20,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:20,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325046577] [2023-12-20 17:41:20,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325046577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:20,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:20,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:41:20,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894933608] [2023-12-20 17:41:20,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:41:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:41:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:20,622 INFO L87 Difference]: Start difference. First operand 147422 states and 158134 transitions. Second operand has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:23,527 INFO L93 Difference]: Finished difference Result 317844 states and 340693 transitions. [2023-12-20 17:41:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:41:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 970 [2023-12-20 17:41:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:23,892 INFO L225 Difference]: With dead ends: 317844 [2023-12-20 17:41:23,892 INFO L226 Difference]: Without dead ends: 170423 [2023-12-20 17:41:23,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:23,949 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 377 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:23,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 195 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:41:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170423 states. [2023-12-20 17:41:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170423 to 149124. [2023-12-20 17:41:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149124 states, 149123 states have (on average 1.0727721411184057) internal successors, (159975), 149123 states have internal predecessors, (159975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149124 states to 149124 states and 159975 transitions. [2023-12-20 17:41:25,839 INFO L78 Accepts]: Start accepts. Automaton has 149124 states and 159975 transitions. Word has length 970 [2023-12-20 17:41:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:25,840 INFO L495 AbstractCegarLoop]: Abstraction has 149124 states and 159975 transitions. [2023-12-20 17:41:25,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 149124 states and 159975 transitions. [2023-12-20 17:41:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2023-12-20 17:41:26,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:26,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:26,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:41:26,163 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:26,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1501897933, now seen corresponding path program 1 times [2023-12-20 17:41:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:26,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067163379] [2023-12-20 17:41:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 1001 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-12-20 17:41:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067163379] [2023-12-20 17:41:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067163379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:26,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257527031] [2023-12-20 17:41:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:26,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:26,551 INFO L87 Difference]: Start difference. First operand 149124 states and 159975 transitions. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:28,556 INFO L93 Difference]: Finished difference Result 299938 states and 321713 transitions. [2023-12-20 17:41:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:28,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 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 1037 [2023-12-20 17:41:28,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:28,735 INFO L225 Difference]: With dead ends: 299938 [2023-12-20 17:41:28,735 INFO L226 Difference]: Without dead ends: 151240 [2023-12-20 17:41:28,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:28,790 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 449 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:28,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 323 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:41:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151240 states. [2023-12-20 17:41:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151240 to 144851. [2023-12-20 17:41:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144851 states, 144850 states have (on average 1.0714601311701761) internal successors, (155201), 144850 states have internal predecessors, (155201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144851 states to 144851 states and 155201 transitions. [2023-12-20 17:41:30,501 INFO L78 Accepts]: Start accepts. Automaton has 144851 states and 155201 transitions. Word has length 1037 [2023-12-20 17:41:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:30,501 INFO L495 AbstractCegarLoop]: Abstraction has 144851 states and 155201 transitions. [2023-12-20 17:41:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 144851 states and 155201 transitions. [2023-12-20 17:41:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2023-12-20 17:41:30,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:30,820 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:41:30,821 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:30,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash -544986687, now seen corresponding path program 1 times [2023-12-20 17:41:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:30,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589704008] [2023-12-20 17:41:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:30,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 945 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-12-20 17:41:31,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589704008] [2023-12-20 17:41:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589704008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:31,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563525421] [2023-12-20 17:41:31,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:31,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:31,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:31,156 INFO L87 Difference]: Start difference. First operand 144851 states and 155201 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:33,136 INFO L93 Difference]: Finished difference Result 284578 states and 304758 transitions. [2023-12-20 17:41:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 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 1052 [2023-12-20 17:41:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:33,288 INFO L225 Difference]: With dead ends: 284578 [2023-12-20 17:41:33,289 INFO L226 Difference]: Without dead ends: 140153 [2023-12-20 17:41:33,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:33,324 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 505 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:33,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 165 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:41:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140153 states. [2023-12-20 17:41:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140153 to 130349. [2023-12-20 17:41:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130349 states, 130348 states have (on average 1.0663991775861539) internal successors, (139003), 130348 states have internal predecessors, (139003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130349 states to 130349 states and 139003 transitions. [2023-12-20 17:41:35,084 INFO L78 Accepts]: Start accepts. Automaton has 130349 states and 139003 transitions. Word has length 1052 [2023-12-20 17:41:35,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:35,084 INFO L495 AbstractCegarLoop]: Abstraction has 130349 states and 139003 transitions. [2023-12-20 17:41:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 130349 states and 139003 transitions. [2023-12-20 17:41:35,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2023-12-20 17:41:35,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:35,157 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:35,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:41:35,157 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:35,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:35,157 INFO L85 PathProgramCache]: Analyzing trace with hash 248983464, now seen corresponding path program 1 times [2023-12-20 17:41:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:35,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499382623] [2023-12-20 17:41:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:35,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 902 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-20 17:41:36,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:36,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499382623] [2023-12-20 17:41:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499382623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:36,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:36,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:36,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703647344] [2023-12-20 17:41:36,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:36,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:36,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:36,008 INFO L87 Difference]: Start difference. First operand 130349 states and 139003 transitions. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:37,820 INFO L93 Difference]: Finished difference Result 267503 states and 285104 transitions. [2023-12-20 17:41:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:37,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 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 1054 [2023-12-20 17:41:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:37,978 INFO L225 Difference]: With dead ends: 267503 [2023-12-20 17:41:37,978 INFO L226 Difference]: Without dead ends: 137580 [2023-12-20 17:41:38,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:38,040 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 148 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:38,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 700 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:41:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137580 states. [2023-12-20 17:41:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137580 to 131624. [2023-12-20 17:41:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131624 states, 131623 states have (on average 1.0658015696344865) internal successors, (140284), 131623 states have internal predecessors, (140284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131624 states to 131624 states and 140284 transitions. [2023-12-20 17:41:39,720 INFO L78 Accepts]: Start accepts. Automaton has 131624 states and 140284 transitions. Word has length 1054 [2023-12-20 17:41:39,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:39,720 INFO L495 AbstractCegarLoop]: Abstraction has 131624 states and 140284 transitions. [2023-12-20 17:41:39,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 131624 states and 140284 transitions. [2023-12-20 17:41:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2023-12-20 17:41:39,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:39,788 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:41:39,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:41:39,788 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1703096549, now seen corresponding path program 1 times [2023-12-20 17:41:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745079884] [2023-12-20 17:41:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1668 backedges. 1363 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:41:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745079884] [2023-12-20 17:41:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745079884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:41:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183848933] [2023-12-20 17:41:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:41:40,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:41:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:41:40,710 INFO L87 Difference]: Start difference. First operand 131624 states and 140284 transitions. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:43,867 INFO L93 Difference]: Finished difference Result 272598 states and 290428 transitions. [2023-12-20 17:41:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:41:43,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 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 1057 [2023-12-20 17:41:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:44,034 INFO L225 Difference]: With dead ends: 272598 [2023-12-20 17:41:44,034 INFO L226 Difference]: Without dead ends: 140975 [2023-12-20 17:41:44,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:41:44,100 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 767 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:44,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 137 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 3143 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:41:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140975 states. [2023-12-20 17:41:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140975 to 111587. [2023-12-20 17:41:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111587 states, 111586 states have (on average 1.061091893248257) internal successors, (118403), 111586 states have internal predecessors, (118403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111587 states to 111587 states and 118403 transitions. [2023-12-20 17:41:45,695 INFO L78 Accepts]: Start accepts. Automaton has 111587 states and 118403 transitions. Word has length 1057 [2023-12-20 17:41:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:45,696 INFO L495 AbstractCegarLoop]: Abstraction has 111587 states and 118403 transitions. [2023-12-20 17:41:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 111587 states and 118403 transitions. [2023-12-20 17:41:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2023-12-20 17:41:45,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:45,772 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:41:45,772 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:45,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash 843920590, now seen corresponding path program 1 times [2023-12-20 17:41:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793462843] [2023-12-20 17:41:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 1498 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-12-20 17:41:46,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:46,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793462843] [2023-12-20 17:41:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793462843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106070172] [2023-12-20 17:41:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:46,712 INFO L87 Difference]: Start difference. First operand 111587 states and 118403 transitions. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:48,362 INFO L93 Difference]: Finished difference Result 223177 states and 236823 transitions. [2023-12-20 17:41:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 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 1125 [2023-12-20 17:41:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:48,504 INFO L225 Difference]: With dead ends: 223177 [2023-12-20 17:41:48,505 INFO L226 Difference]: Without dead ends: 112016 [2023-12-20 17:41:48,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:48,556 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 129 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:48,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 664 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:41:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112016 states. [2023-12-20 17:41:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112016 to 107336. [2023-12-20 17:41:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107336 states, 107335 states have (on average 1.0574928960730423) internal successors, (113506), 107335 states have internal predecessors, (113506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107336 states to 107336 states and 113506 transitions. [2023-12-20 17:41:49,901 INFO L78 Accepts]: Start accepts. Automaton has 107336 states and 113506 transitions. Word has length 1125 [2023-12-20 17:41:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:49,902 INFO L495 AbstractCegarLoop]: Abstraction has 107336 states and 113506 transitions. [2023-12-20 17:41:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 107336 states and 113506 transitions. [2023-12-20 17:41:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2023-12-20 17:41:50,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:50,199 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:50,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:41:50,200 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:50,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash -483845373, now seen corresponding path program 1 times [2023-12-20 17:41:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023420839] [2023-12-20 17:41:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 1632 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-20 17:41:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023420839] [2023-12-20 17:41:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023420839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:51,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:51,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:41:51,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537039494] [2023-12-20 17:41:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:51,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:41:51,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:41:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:41:51,967 INFO L87 Difference]: Start difference. First operand 107336 states and 113506 transitions. Second operand has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:54,885 INFO L93 Difference]: Finished difference Result 219366 states and 231943 transitions. [2023-12-20 17:41:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:41:54,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 1192 [2023-12-20 17:41:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:55,017 INFO L225 Difference]: With dead ends: 219366 [2023-12-20 17:41:55,017 INFO L226 Difference]: Without dead ends: 112456 [2023-12-20 17:41:55,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:41:55,070 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 548 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 3536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:55,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 719 Invalid, 3536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:41:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112456 states. [2023-12-20 17:41:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112456 to 110750. [2023-12-20 17:41:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110750 states, 110749 states have (on average 1.0551246512383858) internal successors, (116854), 110749 states have internal predecessors, (116854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110750 states to 110750 states and 116854 transitions. [2023-12-20 17:41:56,324 INFO L78 Accepts]: Start accepts. Automaton has 110750 states and 116854 transitions. Word has length 1192 [2023-12-20 17:41:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:41:56,324 INFO L495 AbstractCegarLoop]: Abstraction has 110750 states and 116854 transitions. [2023-12-20 17:41:56,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 110750 states and 116854 transitions. [2023-12-20 17:41:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1197 [2023-12-20 17:41:56,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:41:56,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:41:56,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 17:41:56,394 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:41:56,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:41:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 489604637, now seen corresponding path program 1 times [2023-12-20 17:41:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:41:56,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646403701] [2023-12-20 17:41:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:41:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:41:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:41:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-20 17:41:57,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:41:57,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646403701] [2023-12-20 17:41:57,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646403701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:41:57,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:41:57,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:41:57,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074312033] [2023-12-20 17:41:57,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:41:57,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:41:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:41:57,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:41:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:57,484 INFO L87 Difference]: Start difference. First operand 110750 states and 116854 transitions. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:41:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:41:59,118 INFO L93 Difference]: Finished difference Result 227456 states and 239940 transitions. [2023-12-20 17:41:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:41:59,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 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 1196 [2023-12-20 17:41:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:41:59,254 INFO L225 Difference]: With dead ends: 227456 [2023-12-20 17:41:59,254 INFO L226 Difference]: Without dead ends: 117132 [2023-12-20 17:41:59,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:41:59,316 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 207 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:41:59,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 241 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:41:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117132 states. [2023-12-20 17:42:00,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117132 to 115848. [2023-12-20 17:42:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115848 states, 115847 states have (on average 1.0519823560385682) internal successors, (121869), 115847 states have internal predecessors, (121869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115848 states to 115848 states and 121869 transitions. [2023-12-20 17:42:00,849 INFO L78 Accepts]: Start accepts. Automaton has 115848 states and 121869 transitions. Word has length 1196 [2023-12-20 17:42:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:42:00,850 INFO L495 AbstractCegarLoop]: Abstraction has 115848 states and 121869 transitions. [2023-12-20 17:42:00,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 115848 states and 121869 transitions. [2023-12-20 17:42:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1237 [2023-12-20 17:42:00,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:42:00,926 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:42:00,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 17:42:00,927 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:42:00,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:42:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash 37019515, now seen corresponding path program 1 times [2023-12-20 17:42:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:42:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724572488] [2023-12-20 17:42:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:42:00,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:42:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:42:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2762 backedges. 1805 proven. 0 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2023-12-20 17:42:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:42:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724572488] [2023-12-20 17:42:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724572488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:42:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:42:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:42:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007454798] [2023-12-20 17:42:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:42:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:42:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:42:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:42:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:42:02,102 INFO L87 Difference]: Start difference. First operand 115848 states and 121869 transitions. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:42:04,627 INFO L93 Difference]: Finished difference Result 235925 states and 247712 transitions. [2023-12-20 17:42:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:42:04,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 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 1236 [2023-12-20 17:42:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:42:04,775 INFO L225 Difference]: With dead ends: 235925 [2023-12-20 17:42:04,775 INFO L226 Difference]: Without dead ends: 120503 [2023-12-20 17:42:04,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:42:04,840 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 794 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:42:04,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 269 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:42:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120503 states. [2023-12-20 17:42:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120503 to 110293. [2023-12-20 17:42:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110293 states, 110292 states have (on average 1.0483625285605485) internal successors, (115626), 110292 states have internal predecessors, (115626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110293 states to 110293 states and 115626 transitions. [2023-12-20 17:42:06,285 INFO L78 Accepts]: Start accepts. Automaton has 110293 states and 115626 transitions. Word has length 1236 [2023-12-20 17:42:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:42:06,286 INFO L495 AbstractCegarLoop]: Abstraction has 110293 states and 115626 transitions. [2023-12-20 17:42:06,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 110293 states and 115626 transitions. [2023-12-20 17:42:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2023-12-20 17:42:06,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:42:06,347 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:42:06,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 17:42:06,347 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:42:06,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:42:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1853616977, now seen corresponding path program 1 times [2023-12-20 17:42:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:42:06,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834083889] [2023-12-20 17:42:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:42:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:42:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:42:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 1742 proven. 446 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:42:07,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:42:07,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834083889] [2023-12-20 17:42:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834083889] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:42:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217408504] [2023-12-20 17:42:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:42:07,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:42:07,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:42:07,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:42:07,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:42:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:42:08,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:42:08,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:42:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 817 proven. 82 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2023-12-20 17:42:08,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:42:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2270 backedges. 817 proven. 82 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2023-12-20 17:42:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217408504] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:42:08,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:42:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 10 [2023-12-20 17:42:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388604405] [2023-12-20 17:42:08,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:42:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 17:42:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:42:08,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 17:42:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-20 17:42:08,986 INFO L87 Difference]: Start difference. First operand 110293 states and 115626 transitions. Second operand has 10 states, 10 states have (on average 180.1) internal successors, (1801), 10 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:42:17,037 INFO L93 Difference]: Finished difference Result 275097 states and 288468 transitions. [2023-12-20 17:42:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 17:42:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 180.1) internal successors, (1801), 10 states have internal predecessors, (1801), 0 states have call successors, (0), 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 1252 [2023-12-20 17:42:17,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:42:17,232 INFO L225 Difference]: With dead ends: 275097 [2023-12-20 17:42:17,232 INFO L226 Difference]: Without dead ends: 164805 [2023-12-20 17:42:17,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2522 GetRequests, 2507 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2023-12-20 17:42:17,296 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 4656 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 9864 mSolverCounterSat, 1164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1164 IncrementalHoareTripleChecker+Valid, 9864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:42:17,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4656 Valid, 288 Invalid, 11028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1164 Valid, 9864 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-20 17:42:17,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164805 states. [2023-12-20 17:42:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164805 to 140539. [2023-12-20 17:42:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140539 states, 140538 states have (on average 1.0412699768034268) internal successors, (146338), 140538 states have internal predecessors, (146338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140539 states to 140539 states and 146338 transitions. [2023-12-20 17:42:19,178 INFO L78 Accepts]: Start accepts. Automaton has 140539 states and 146338 transitions. Word has length 1252 [2023-12-20 17:42:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:42:19,178 INFO L495 AbstractCegarLoop]: Abstraction has 140539 states and 146338 transitions. [2023-12-20 17:42:19,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 180.1) internal successors, (1801), 10 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 140539 states and 146338 transitions. [2023-12-20 17:42:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2023-12-20 17:42:19,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:42:19,287 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:42:19,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 17:42:19,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:42:19,495 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:42:19,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:42:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash -270940607, now seen corresponding path program 1 times [2023-12-20 17:42:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:42:19,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462302060] [2023-12-20 17:42:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:42:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:42:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:42:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2828 backedges. 1973 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2023-12-20 17:42:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:42:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462302060] [2023-12-20 17:42:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462302060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:42:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:42:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:42:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422705568] [2023-12-20 17:42:20,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:42:20,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:42:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:42:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:42:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:42:20,887 INFO L87 Difference]: Start difference. First operand 140539 states and 146338 transitions. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:42:22,568 INFO L93 Difference]: Finished difference Result 280232 states and 291731 transitions. [2023-12-20 17:42:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:42:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 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 1346 [2023-12-20 17:42:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:42:22,727 INFO L225 Difference]: With dead ends: 280232 [2023-12-20 17:42:22,727 INFO L226 Difference]: Without dead ends: 140119 [2023-12-20 17:42:22,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:42:22,788 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 113 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:42:22,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 681 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:42:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140119 states. [2023-12-20 17:42:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140119 to 109914. [2023-12-20 17:42:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109914 states, 109913 states have (on average 1.044380555530283) internal successors, (114791), 109913 states have internal predecessors, (114791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109914 states to 109914 states and 114791 transitions. [2023-12-20 17:42:24,432 INFO L78 Accepts]: Start accepts. Automaton has 109914 states and 114791 transitions. Word has length 1346 [2023-12-20 17:42:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:42:24,432 INFO L495 AbstractCegarLoop]: Abstraction has 109914 states and 114791 transitions. [2023-12-20 17:42:24,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 109914 states and 114791 transitions. [2023-12-20 17:42:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1352 [2023-12-20 17:42:24,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:42:24,503 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:42:24,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 17:42:24,503 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:42:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:42:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1139516903, now seen corresponding path program 1 times [2023-12-20 17:42:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:42:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339639398] [2023-12-20 17:42:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:42:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:42:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:42:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 2168 proven. 446 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-20 17:42:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:42:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339639398] [2023-12-20 17:42:26,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339639398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:42:26,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360856554] [2023-12-20 17:42:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:42:26,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:42:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:42:26,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:42:26,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:42:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:42:26,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:42:26,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:42:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 2004 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2023-12-20 17:42:26,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:42:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360856554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:42:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:42:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 17:42:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190530890] [2023-12-20 17:42:26,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:42:27,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:42:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:42:27,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:42:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:42:27,001 INFO L87 Difference]: Start difference. First operand 109914 states and 114791 transitions. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:42:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:42:28,592 INFO L93 Difference]: Finished difference Result 232230 states and 242408 transitions. [2023-12-20 17:42:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:42:28,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 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 1351 [2023-12-20 17:42:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:42:28,732 INFO L225 Difference]: With dead ends: 232230 [2023-12-20 17:42:28,733 INFO L226 Difference]: Without dead ends: 122742 [2023-12-20 17:42:28,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1356 GetRequests, 1351 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:42:28,795 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 122 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:42:28,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 665 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:42:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122742 states. [2023-12-20 17:42:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122742 to 120170. [2023-12-20 17:42:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120170 states, 120169 states have (on average 1.0414249931346686) internal successors, (125147), 120169 states have internal predecessors, (125147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)