/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:24:54,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:24:54,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:24:54,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:24:54,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:24:54,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:24:54,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:24:54,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:24:54,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:24:54,957 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:24:54,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:24:54,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:24:54,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:24:54,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:24:54,959 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:24:54,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:24:54,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:24:54,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:24:54,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:24:54,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:24:54,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:24:54,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:24:54,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:24:54,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:24:54,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:24:54,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:24:54,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:24:54,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:24:54,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:24:54,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:24:54,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:24:54,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:24:54,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:24:54,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:24:54,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:24:54,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:24:54,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:24:54,966 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:24:55,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:24:55,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:24:55,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:24:55,185 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:24:55,186 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:24:55,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c [2023-12-19 01:24:56,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:24:56,715 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:24:56,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c [2023-12-19 01:24:56,743 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8827423d/5e73b3a83f8d422db97e4e5f45ad960a/FLAG9b12897d9 [2023-12-19 01:24:56,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8827423d/5e73b3a83f8d422db97e4e5f45ad960a [2023-12-19 01:24:56,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:24:56,757 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:24:56,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:24:56,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:24:56,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:24:56,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:24:56" (1/1) ... [2023-12-19 01:24:56,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f20f02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:56, skipping insertion in model container [2023-12-19 01:24:56,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:24:56" (1/1) ... [2023-12-19 01:24:56,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:24:57,184 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[26860,26873] [2023-12-19 01:24:57,235 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[28735,28748] [2023-12-19 01:24:57,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:24:57,847 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:24:57,891 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[26860,26873] [2023-12-19 01:24:57,894 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[28735,28748] [2023-12-19 01:24:58,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:24:58,266 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:24:58,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58 WrapperNode [2023-12-19 01:24:58,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:24:58,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:24:58,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:24:58,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:24:58,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,524 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5285 [2023-12-19 01:24:58,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:24:58,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:24:58,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:24:58,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:24:58,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,836 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]. [2023-12-19 01:24:58,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:58,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:59,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:24:59,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:24:59,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:24:59,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:24:59,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (1/1) ... [2023-12-19 01:24:59,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:24:59,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:24:59,097 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) [2023-12-19 01:24:59,117 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 [2023-12-19 01:24:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:24:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:24:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:24:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:24:59,408 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:24:59,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:25:02,624 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:25:02,667 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:25:02,668 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:25:02,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:25:02 BoogieIcfgContainer [2023-12-19 01:25:02,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:25:02,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:25:02,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:25:02,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:25:02,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:24:56" (1/3) ... [2023-12-19 01:25:02,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce93331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:25:02, skipping insertion in model container [2023-12-19 01:25:02,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:24:58" (2/3) ... [2023-12-19 01:25:02,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce93331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:25:02, skipping insertion in model container [2023-12-19 01:25:02,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:25:02" (3/3) ... [2023-12-19 01:25:02,673 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c [2023-12-19 01:25:02,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:25:02,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:25:02,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:25:02,730 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;@38892be9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:25:02,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:25:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 01:25:02,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:02,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:02,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:02,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 200665812, now seen corresponding path program 1 times [2023-12-19 01:25:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178904064] [2023-12-19 01:25:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178904064] [2023-12-19 01:25:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178904064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:02,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:25:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721395788] [2023-12-19 01:25:02,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 01:25:02,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:02,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 01:25:02,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 01:25:02,914 INFO L87 Difference]: Start difference. First operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:02,988 INFO L93 Difference]: Finished difference Result 1699 states and 3336 transitions. [2023-12-19 01:25:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 01:25:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-19 01:25:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:03,001 INFO L225 Difference]: With dead ends: 1699 [2023-12-19 01:25:03,002 INFO L226 Difference]: Without dead ends: 878 [2023-12-19 01:25:03,006 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 [2023-12-19 01:25:03,008 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:03,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1661 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:03,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-12-19 01:25:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-12-19 01:25:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8961187214611872) internal successors, (1661), 877 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1661 transitions. [2023-12-19 01:25:03,062 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1661 transitions. Word has length 15 [2023-12-19 01:25:03,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:03,062 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1661 transitions. [2023-12-19 01:25:03,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1661 transitions. [2023-12-19 01:25:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 01:25:03,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:03,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:03,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:25:03,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:03,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -62126234, now seen corresponding path program 1 times [2023-12-19 01:25:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136430104] [2023-12-19 01:25:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136430104] [2023-12-19 01:25:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136430104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:03,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:03,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:25:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462449883] [2023-12-19 01:25:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:03,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:03,229 INFO L87 Difference]: Start difference. First operand 878 states and 1661 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:06,104 INFO L93 Difference]: Finished difference Result 2382 states and 4534 transitions. [2023-12-19 01:25:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-19 01:25:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:06,110 INFO L225 Difference]: With dead ends: 2382 [2023-12-19 01:25:06,110 INFO L226 Difference]: Without dead ends: 1629 [2023-12-19 01:25:06,111 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 [2023-12-19 01:25:06,112 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 1003 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:06,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 766 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:25:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-12-19 01:25:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2023-12-19 01:25:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.5783650891210816) internal successors, (2568), 1628 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2568 transitions. [2023-12-19 01:25:06,146 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2568 transitions. Word has length 15 [2023-12-19 01:25:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:06,146 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2568 transitions. [2023-12-19 01:25:06,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2568 transitions. [2023-12-19 01:25:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 01:25:06,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:06,147 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] [2023-12-19 01:25:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:25:06,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:06,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1904432747, now seen corresponding path program 1 times [2023-12-19 01:25:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:06,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17807446] [2023-12-19 01:25:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17807446] [2023-12-19 01:25:06,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17807446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:06,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:06,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:25:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366459179] [2023-12-19 01:25:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:06,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:25:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:25:06,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:25:06,279 INFO L87 Difference]: Start difference. First operand 1629 states and 2568 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:06,354 INFO L93 Difference]: Finished difference Result 1691 states and 2667 transitions. [2023-12-19 01:25:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:25:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-19 01:25:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:06,359 INFO L225 Difference]: With dead ends: 1691 [2023-12-19 01:25:06,359 INFO L226 Difference]: Without dead ends: 1629 [2023-12-19 01:25:06,360 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 [2023-12-19 01:25:06,362 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 0 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4909 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2023-12-19 01:25:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1629. [2023-12-19 01:25:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1627 states have (on average 1.5408727719729565) internal successors, (2507), 1628 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2507 transitions. [2023-12-19 01:25:06,390 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2507 transitions. Word has length 27 [2023-12-19 01:25:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:06,390 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2507 transitions. [2023-12-19 01:25:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2507 transitions. [2023-12-19 01:25:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:25:06,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:06,393 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:25:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:25:06,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:06,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1657997812, now seen corresponding path program 1 times [2023-12-19 01:25:06,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:06,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793875788] [2023-12-19 01:25:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:06,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:06,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793875788] [2023-12-19 01:25:06,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793875788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:06,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:06,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:06,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716172993] [2023-12-19 01:25:06,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:06,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:06,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:06,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:06,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:06,500 INFO L87 Difference]: Start difference. First operand 1629 states and 2507 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:09,329 INFO L93 Difference]: Finished difference Result 4635 states and 7194 transitions. [2023-12-19 01:25:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:09,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 01:25:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:09,339 INFO L225 Difference]: With dead ends: 4635 [2023-12-19 01:25:09,339 INFO L226 Difference]: Without dead ends: 3131 [2023-12-19 01:25:09,341 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 [2023-12-19 01:25:09,341 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 762 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:09,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1395 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 01:25:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2023-12-19 01:25:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3131. [2023-12-19 01:25:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3129 states have (on average 1.465324384787472) internal successors, (4585), 3130 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4585 transitions. [2023-12-19 01:25:09,384 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4585 transitions. Word has length 86 [2023-12-19 01:25:09,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:09,384 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 4585 transitions. [2023-12-19 01:25:09,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4585 transitions. [2023-12-19 01:25:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 01:25:09,386 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:09,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:09,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:25:09,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:09,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash -537634491, now seen corresponding path program 1 times [2023-12-19 01:25:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:09,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153087048] [2023-12-19 01:25:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:09,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153087048] [2023-12-19 01:25:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153087048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:25:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220637847] [2023-12-19 01:25:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:25:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:25:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:25:09,608 INFO L87 Difference]: Start difference. First operand 3131 states and 4585 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:10,050 INFO L93 Difference]: Finished difference Result 4075 states and 6121 transitions. [2023-12-19 01:25:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:25:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-19 01:25:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:10,062 INFO L225 Difference]: With dead ends: 4075 [2023-12-19 01:25:10,062 INFO L226 Difference]: Without dead ends: 4016 [2023-12-19 01:25:10,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-12-19 01:25:10,065 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 13341 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:10,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13341 Valid, 6272 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:25:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2023-12-19 01:25:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3188. [2023-12-19 01:25:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 3186 states have (on average 1.4682988072818581) internal successors, (4678), 3187 states have internal predecessors, (4678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 4678 transitions. [2023-12-19 01:25:10,123 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 4678 transitions. Word has length 87 [2023-12-19 01:25:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:10,123 INFO L495 AbstractCegarLoop]: Abstraction has 3188 states and 4678 transitions. [2023-12-19 01:25:10,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:10,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 4678 transitions. [2023-12-19 01:25:10,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 01:25:10,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:10,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:10,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:25:10,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:10,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1602141785, now seen corresponding path program 1 times [2023-12-19 01:25:10,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:10,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979589029] [2023-12-19 01:25:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:10,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:10,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979589029] [2023-12-19 01:25:10,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979589029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:10,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:10,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:25:10,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969868185] [2023-12-19 01:25:10,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:10,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:10,243 INFO L87 Difference]: Start difference. First operand 3188 states and 4678 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:12,941 INFO L93 Difference]: Finished difference Result 9200 states and 13522 transitions. [2023-12-19 01:25:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-19 01:25:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:12,975 INFO L225 Difference]: With dead ends: 9200 [2023-12-19 01:25:12,975 INFO L226 Difference]: Without dead ends: 6194 [2023-12-19 01:25:12,980 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 [2023-12-19 01:25:12,980 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 889 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:12,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 669 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:25:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2023-12-19 01:25:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6192. [2023-12-19 01:25:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 6190 states have (on average 1.3226171243941842) internal successors, (8187), 6191 states have internal predecessors, (8187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 8187 transitions. [2023-12-19 01:25:13,127 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 8187 transitions. Word has length 88 [2023-12-19 01:25:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:13,128 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 8187 transitions. [2023-12-19 01:25:13,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 8187 transitions. [2023-12-19 01:25:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 01:25:13,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:13,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:13,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:25:13,129 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:13,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1411799083, now seen corresponding path program 1 times [2023-12-19 01:25:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236556195] [2023-12-19 01:25:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:13,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:13,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236556195] [2023-12-19 01:25:13,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236556195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:13,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:13,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:13,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425613653] [2023-12-19 01:25:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:13,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:13,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:13,240 INFO L87 Difference]: Start difference. First operand 6192 states and 8187 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:13,275 INFO L93 Difference]: Finished difference Result 6413 states and 8546 transitions. [2023-12-19 01:25:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-19 01:25:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:13,288 INFO L225 Difference]: With dead ends: 6413 [2023-12-19 01:25:13,288 INFO L226 Difference]: Without dead ends: 6297 [2023-12-19 01:25:13,290 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 [2023-12-19 01:25:13,291 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1504 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:13,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1685 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:13,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6297 states. [2023-12-19 01:25:13,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6297 to 6295. [2023-12-19 01:25:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 6293 states have (on average 1.3273478468139202) internal successors, (8353), 6294 states have internal predecessors, (8353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 8353 transitions. [2023-12-19 01:25:13,367 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 8353 transitions. Word has length 89 [2023-12-19 01:25:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:13,368 INFO L495 AbstractCegarLoop]: Abstraction has 6295 states and 8353 transitions. [2023-12-19 01:25:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 8353 transitions. [2023-12-19 01:25:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 01:25:13,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:13,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:25:13,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:13,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:13,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1409654131, now seen corresponding path program 1 times [2023-12-19 01:25:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638545553] [2023-12-19 01:25:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:13,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638545553] [2023-12-19 01:25:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638545553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:13,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:25:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376259091] [2023-12-19 01:25:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:13,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:25:13,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:25:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:25:13,733 INFO L87 Difference]: Start difference. First operand 6295 states and 8353 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:14,120 INFO L93 Difference]: Finished difference Result 6516 states and 8709 transitions. [2023-12-19 01:25:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:25:14,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-19 01:25:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:14,142 INFO L225 Difference]: With dead ends: 6516 [2023-12-19 01:25:14,142 INFO L226 Difference]: Without dead ends: 6297 [2023-12-19 01:25:14,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:25:14,145 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 4596 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4596 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:14,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4596 Valid, 2243 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:25:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6297 states. [2023-12-19 01:25:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6297 to 6295. [2023-12-19 01:25:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6295 states, 6293 states have (on average 1.3270300333704115) internal successors, (8351), 6294 states have internal predecessors, (8351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 8351 transitions. [2023-12-19 01:25:14,251 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 8351 transitions. Word has length 89 [2023-12-19 01:25:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:14,251 INFO L495 AbstractCegarLoop]: Abstraction has 6295 states and 8351 transitions. [2023-12-19 01:25:14,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 8351 transitions. [2023-12-19 01:25:14,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 01:25:14,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:14,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:14,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:25:14,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:14,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -878536132, now seen corresponding path program 1 times [2023-12-19 01:25:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:14,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047873527] [2023-12-19 01:25:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:14,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:14,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047873527] [2023-12-19 01:25:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047873527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:25:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237260315] [2023-12-19 01:25:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:25:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:25:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:25:14,437 INFO L87 Difference]: Start difference. First operand 6295 states and 8351 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:14,474 INFO L93 Difference]: Finished difference Result 6303 states and 8360 transitions. [2023-12-19 01:25:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:25:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-19 01:25:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:14,482 INFO L225 Difference]: With dead ends: 6303 [2023-12-19 01:25:14,484 INFO L226 Difference]: Without dead ends: 6301 [2023-12-19 01:25:14,487 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 [2023-12-19 01:25:14,488 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:14,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4780 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2023-12-19 01:25:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 6299. [2023-12-19 01:25:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 6297 states have (on average 1.3266634905510561) internal successors, (8354), 6298 states have internal predecessors, (8354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 8354 transitions. [2023-12-19 01:25:14,556 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 8354 transitions. Word has length 90 [2023-12-19 01:25:14,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:14,556 INFO L495 AbstractCegarLoop]: Abstraction has 6299 states and 8354 transitions. [2023-12-19 01:25:14,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,556 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 8354 transitions. [2023-12-19 01:25:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:14,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:14,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:14,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:25:14,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:14,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1337203597, now seen corresponding path program 1 times [2023-12-19 01:25:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187814396] [2023-12-19 01:25:14,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:14,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:14,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:14,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187814396] [2023-12-19 01:25:14,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187814396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:14,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:14,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:14,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763800662] [2023-12-19 01:25:14,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:14,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:14,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:14,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:14,612 INFO L87 Difference]: Start difference. First operand 6299 states and 8354 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:14,644 INFO L93 Difference]: Finished difference Result 6533 states and 8727 transitions. [2023-12-19 01:25:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:14,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:14,653 INFO L225 Difference]: With dead ends: 6533 [2023-12-19 01:25:14,653 INFO L226 Difference]: Without dead ends: 6413 [2023-12-19 01:25:14,654 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 [2023-12-19 01:25:14,655 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1524 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:14,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1773 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2023-12-19 01:25:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 6411. [2023-12-19 01:25:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6409 states have (on average 1.3310968949914184) internal successors, (8531), 6410 states have internal predecessors, (8531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 8531 transitions. [2023-12-19 01:25:14,724 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 8531 transitions. Word has length 91 [2023-12-19 01:25:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:14,725 INFO L495 AbstractCegarLoop]: Abstraction has 6411 states and 8531 transitions. [2023-12-19 01:25:14,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 8531 transitions. [2023-12-19 01:25:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:14,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:14,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:14,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:25:14,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:14,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1411816077, now seen corresponding path program 1 times [2023-12-19 01:25:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:14,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873118814] [2023-12-19 01:25:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:14,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873118814] [2023-12-19 01:25:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873118814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:14,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:14,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:14,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534086537] [2023-12-19 01:25:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:14,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:14,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:14,784 INFO L87 Difference]: Start difference. First operand 6411 states and 8531 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:14,823 INFO L93 Difference]: Finished difference Result 7053 states and 9551 transitions. [2023-12-19 01:25:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:14,832 INFO L225 Difference]: With dead ends: 7053 [2023-12-19 01:25:14,832 INFO L226 Difference]: Without dead ends: 6720 [2023-12-19 01:25:14,834 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 [2023-12-19 01:25:14,834 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:14,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:14,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2023-12-19 01:25:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 6718. [2023-12-19 01:25:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6718 states, 6716 states have (on average 1.342019058963669) internal successors, (9013), 6717 states have internal predecessors, (9013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9013 transitions. [2023-12-19 01:25:14,902 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9013 transitions. Word has length 91 [2023-12-19 01:25:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:14,902 INFO L495 AbstractCegarLoop]: Abstraction has 6718 states and 9013 transitions. [2023-12-19 01:25:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9013 transitions. [2023-12-19 01:25:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:14,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:14,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:25:14,903 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:14,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1756813453, now seen corresponding path program 1 times [2023-12-19 01:25:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612838424] [2023-12-19 01:25:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612838424] [2023-12-19 01:25:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612838424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:14,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:14,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:14,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262596392] [2023-12-19 01:25:14,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:14,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:14,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:14,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:14,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:14,955 INFO L87 Difference]: Start difference. First operand 6718 states and 9013 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:14,996 INFO L93 Difference]: Finished difference Result 7950 states and 10955 transitions. [2023-12-19 01:25:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:14,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:15,008 INFO L225 Difference]: With dead ends: 7950 [2023-12-19 01:25:15,009 INFO L226 Difference]: Without dead ends: 7310 [2023-12-19 01:25:15,013 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 [2023-12-19 01:25:15,013 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1518 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:15,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1775 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2023-12-19 01:25:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 7308. [2023-12-19 01:25:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7308 states, 7306 states have (on average 1.3590199835751438) internal successors, (9929), 7307 states have internal predecessors, (9929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7308 states to 7308 states and 9929 transitions. [2023-12-19 01:25:15,112 INFO L78 Accepts]: Start accepts. Automaton has 7308 states and 9929 transitions. Word has length 91 [2023-12-19 01:25:15,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:15,112 INFO L495 AbstractCegarLoop]: Abstraction has 7308 states and 9929 transitions. [2023-12-19 01:25:15,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 7308 states and 9929 transitions. [2023-12-19 01:25:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:15,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:15,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:15,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:25:15,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:15,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1488230285, now seen corresponding path program 1 times [2023-12-19 01:25:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:15,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060396434] [2023-12-19 01:25:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:15,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060396434] [2023-12-19 01:25:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060396434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:15,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:15,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996209347] [2023-12-19 01:25:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:15,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:15,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:15,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:15,198 INFO L87 Difference]: Start difference. First operand 7308 states and 9929 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:15,321 INFO L93 Difference]: Finished difference Result 9672 states and 13619 transitions. [2023-12-19 01:25:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:15,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:15,346 INFO L225 Difference]: With dead ends: 9672 [2023-12-19 01:25:15,346 INFO L226 Difference]: Without dead ends: 8442 [2023-12-19 01:25:15,359 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 [2023-12-19 01:25:15,360 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1516 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:15,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1777 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2023-12-19 01:25:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 8440. [2023-12-19 01:25:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8440 states, 8438 states have (on average 1.382436596349846) internal successors, (11665), 8439 states have internal predecessors, (11665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8440 states to 8440 states and 11665 transitions. [2023-12-19 01:25:15,472 INFO L78 Accepts]: Start accepts. Automaton has 8440 states and 11665 transitions. Word has length 91 [2023-12-19 01:25:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:15,472 INFO L495 AbstractCegarLoop]: Abstraction has 8440 states and 11665 transitions. [2023-12-19 01:25:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8440 states and 11665 transitions. [2023-12-19 01:25:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:15,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:15,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:25:15,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:15,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1528174221, now seen corresponding path program 1 times [2023-12-19 01:25:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659946432] [2023-12-19 01:25:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:15,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:15,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659946432] [2023-12-19 01:25:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659946432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:15,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971805939] [2023-12-19 01:25:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:15,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:15,528 INFO L87 Difference]: Start difference. First operand 8440 states and 11665 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:15,607 INFO L93 Difference]: Finished difference Result 12972 states and 18659 transitions. [2023-12-19 01:25:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:15,621 INFO L225 Difference]: With dead ends: 12972 [2023-12-19 01:25:15,621 INFO L226 Difference]: Without dead ends: 10610 [2023-12-19 01:25:15,625 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 [2023-12-19 01:25:15,626 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:15,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10610 states. [2023-12-19 01:25:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10610 to 10608. [2023-12-19 01:25:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10606 states have (on average 1.4091080520460117) internal successors, (14945), 10607 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14945 transitions. [2023-12-19 01:25:15,766 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14945 transitions. Word has length 91 [2023-12-19 01:25:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:15,766 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14945 transitions. [2023-12-19 01:25:15,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14945 transitions. [2023-12-19 01:25:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:15,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:15,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:15,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:25:15,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:15,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:15,768 INFO L85 PathProgramCache]: Analyzing trace with hash 902518157, now seen corresponding path program 1 times [2023-12-19 01:25:15,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:15,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179638632] [2023-12-19 01:25:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:15,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:15,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:15,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179638632] [2023-12-19 01:25:15,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179638632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:15,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:15,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924519786] [2023-12-19 01:25:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:15,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:15,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:15,826 INFO L87 Difference]: Start difference. First operand 10608 states and 14945 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:15,975 INFO L93 Difference]: Finished difference Result 19284 states and 28163 transitions. [2023-12-19 01:25:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:15,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:15,992 INFO L225 Difference]: With dead ends: 19284 [2023-12-19 01:25:15,992 INFO L226 Difference]: Without dead ends: 14754 [2023-12-19 01:25:15,999 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 [2023-12-19 01:25:15,999 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1512 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:15,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14754 states. [2023-12-19 01:25:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14754 to 14752. [2023-12-19 01:25:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14752 states, 14750 states have (on average 1.4319322033898305) internal successors, (21121), 14751 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) [2023-12-19 01:25:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14752 states to 14752 states and 21121 transitions. [2023-12-19 01:25:16,210 INFO L78 Accepts]: Start accepts. Automaton has 14752 states and 21121 transitions. Word has length 91 [2023-12-19 01:25:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:16,210 INFO L495 AbstractCegarLoop]: Abstraction has 14752 states and 21121 transitions. [2023-12-19 01:25:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14752 states and 21121 transitions. [2023-12-19 01:25:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:16,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:16,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:16,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:25:16,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:16,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1791251597, now seen corresponding path program 1 times [2023-12-19 01:25:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934275374] [2023-12-19 01:25:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:16,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934275374] [2023-12-19 01:25:16,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934275374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:16,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884361237] [2023-12-19 01:25:16,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:16,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:16,259 INFO L87 Difference]: Start difference. First operand 14752 states and 21121 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:16,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:16,547 INFO L93 Difference]: Finished difference Result 31332 states and 46019 transitions. [2023-12-19 01:25:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:16,578 INFO L225 Difference]: With dead ends: 31332 [2023-12-19 01:25:16,578 INFO L226 Difference]: Without dead ends: 22658 [2023-12-19 01:25:16,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:16,591 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1510 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:16,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22658 states. [2023-12-19 01:25:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22658 to 22656. [2023-12-19 01:25:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22656 states, 22654 states have (on average 1.4436744062858657) internal successors, (32705), 22655 states have internal predecessors, (32705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22656 states to 22656 states and 32705 transitions. [2023-12-19 01:25:16,953 INFO L78 Accepts]: Start accepts. Automaton has 22656 states and 32705 transitions. Word has length 91 [2023-12-19 01:25:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:16,953 INFO L495 AbstractCegarLoop]: Abstraction has 22656 states and 32705 transitions. [2023-12-19 01:25:16,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22656 states and 32705 transitions. [2023-12-19 01:25:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 01:25:16,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:16,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:16,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:25:16,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:16,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2127767155, now seen corresponding path program 1 times [2023-12-19 01:25:16,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:16,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735949324] [2023-12-19 01:25:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:17,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:17,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735949324] [2023-12-19 01:25:17,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735949324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:17,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818725898] [2023-12-19 01:25:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:25:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:25:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:25:17,001 INFO L87 Difference]: Start difference. First operand 22656 states and 32705 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:17,491 INFO L93 Difference]: Finished difference Result 54276 states and 79427 transitions. [2023-12-19 01:25:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:25:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 01:25:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:17,549 INFO L225 Difference]: With dead ends: 54276 [2023-12-19 01:25:17,549 INFO L226 Difference]: Without dead ends: 37698 [2023-12-19 01:25:17,576 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 [2023-12-19 01:25:17,576 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1520 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:17,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:25:17,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37698 states. [2023-12-19 01:25:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37698 to 37696. [2023-12-19 01:25:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37696 states, 37694 states have (on average 1.4415291558338197) internal successors, (54337), 37695 states have internal predecessors, (54337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37696 states to 37696 states and 54337 transitions. [2023-12-19 01:25:18,441 INFO L78 Accepts]: Start accepts. Automaton has 37696 states and 54337 transitions. Word has length 91 [2023-12-19 01:25:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:18,441 INFO L495 AbstractCegarLoop]: Abstraction has 37696 states and 54337 transitions. [2023-12-19 01:25:18,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 37696 states and 54337 transitions. [2023-12-19 01:25:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 01:25:18,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:18,442 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:25:18,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:25:18,442 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:18,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:18,443 INFO L85 PathProgramCache]: Analyzing trace with hash -164689117, now seen corresponding path program 1 times [2023-12-19 01:25:18,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:18,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399368901] [2023-12-19 01:25:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:18,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:25:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399368901] [2023-12-19 01:25:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399368901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:18,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:25:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190889717] [2023-12-19 01:25:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:25:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:25:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:25:18,585 INFO L87 Difference]: Start difference. First operand 37696 states and 54337 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:23,151 INFO L93 Difference]: Finished difference Result 44457 states and 63067 transitions. [2023-12-19 01:25:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:25:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-19 01:25:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:23,227 INFO L225 Difference]: With dead ends: 44457 [2023-12-19 01:25:23,227 INFO L226 Difference]: Without dead ends: 38447 [2023-12-19 01:25:23,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:25:23,248 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 2504 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 5418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:23,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 416 Invalid, 5418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 4867 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 01:25:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38447 states. [2023-12-19 01:25:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38447 to 38447. [2023-12-19 01:25:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38447 states, 38445 states have (on average 1.4299388737156977) internal successors, (54974), 38446 states have internal predecessors, (54974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38447 states to 38447 states and 54974 transitions. [2023-12-19 01:25:24,229 INFO L78 Accepts]: Start accepts. Automaton has 38447 states and 54974 transitions. Word has length 92 [2023-12-19 01:25:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:24,230 INFO L495 AbstractCegarLoop]: Abstraction has 38447 states and 54974 transitions. [2023-12-19 01:25:24,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 38447 states and 54974 transitions. [2023-12-19 01:25:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:25:24,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:24,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:24,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:25:24,237 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:24,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1879818090, now seen corresponding path program 1 times [2023-12-19 01:25:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276530407] [2023-12-19 01:25:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:25:24,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276530407] [2023-12-19 01:25:24,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276530407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:24,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:24,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:25:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104737904] [2023-12-19 01:25:24,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:24,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:25:24,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:25:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:25:24,581 INFO L87 Difference]: Start difference. First operand 38447 states and 54974 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:28,915 INFO L93 Difference]: Finished difference Result 288065 states and 420679 transitions. [2023-12-19 01:25:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:25:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:25:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:29,481 INFO L225 Difference]: With dead ends: 288065 [2023-12-19 01:25:29,481 INFO L226 Difference]: Without dead ends: 266047 [2023-12-19 01:25:29,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:25:29,599 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 11678 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11678 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:29,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11678 Valid, 5224 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:25:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266047 states. [2023-12-19 01:25:32,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266047 to 65327. [2023-12-19 01:25:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65327 states, 65325 states have (on average 1.4391733639494833) internal successors, (94014), 65326 states have internal predecessors, (94014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65327 states to 65327 states and 94014 transitions. [2023-12-19 01:25:33,135 INFO L78 Accepts]: Start accepts. Automaton has 65327 states and 94014 transitions. Word has length 115 [2023-12-19 01:25:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:33,135 INFO L495 AbstractCegarLoop]: Abstraction has 65327 states and 94014 transitions. [2023-12-19 01:25:33,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 65327 states and 94014 transitions. [2023-12-19 01:25:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:25:33,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:33,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:33,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:25:33,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:33,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1805205610, now seen corresponding path program 1 times [2023-12-19 01:25:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:33,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046451567] [2023-12-19 01:25:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:25:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046451567] [2023-12-19 01:25:33,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046451567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:33,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:33,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:25:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004724804] [2023-12-19 01:25:33,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:33,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:25:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:25:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:25:33,417 INFO L87 Difference]: Start difference. First operand 65327 states and 94014 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:39,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:39,506 INFO L93 Difference]: Finished difference Result 319681 states and 466759 transitions. [2023-12-19 01:25:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:25:39,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 115 [2023-12-19 01:25:39,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:40,125 INFO L225 Difference]: With dead ends: 319681 [2023-12-19 01:25:40,126 INFO L226 Difference]: Without dead ends: 288063 [2023-12-19 01:25:40,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:25:40,225 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11680 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:40,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11680 Valid, 5181 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 01:25:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288063 states. [2023-12-19 01:25:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288063 to 107951. [2023-12-19 01:25:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107951 states, 107949 states have (on average 1.443626156796265) internal successors, (155838), 107950 states have internal predecessors, (155838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107951 states to 107951 states and 155838 transitions. [2023-12-19 01:25:45,008 INFO L78 Accepts]: Start accepts. Automaton has 107951 states and 155838 transitions. Word has length 115 [2023-12-19 01:25:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:45,008 INFO L495 AbstractCegarLoop]: Abstraction has 107951 states and 155838 transitions. [2023-12-19 01:25:45,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 107951 states and 155838 transitions. [2023-12-19 01:25:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:25:45,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:45,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:45,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:25:45,049 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:45,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1460208234, now seen corresponding path program 1 times [2023-12-19 01:25:45,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:45,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587166937] [2023-12-19 01:25:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:45,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:25:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:45,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587166937] [2023-12-19 01:25:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587166937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:45,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:45,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:25:45,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519731394] [2023-12-19 01:25:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:45,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:25:45,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:25:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:25:45,222 INFO L87 Difference]: Start difference. First operand 107951 states and 155838 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:25:52,697 INFO L93 Difference]: Finished difference Result 351297 states and 512711 transitions. [2023-12-19 01:25:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:25:52,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:25:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:25:53,503 INFO L225 Difference]: With dead ends: 351297 [2023-12-19 01:25:53,503 INFO L226 Difference]: Without dead ends: 319679 [2023-12-19 01:25:53,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:25:53,566 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 11720 mSDsluCounter, 3516 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11720 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:25:53,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11720 Valid, 5206 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:25:53,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319679 states. [2023-12-19 01:25:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319679 to 139567. [2023-12-19 01:25:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139567 states, 139565 states have (on average 1.4458496041271092) internal successors, (201790), 139566 states have internal predecessors, (201790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139567 states to 139567 states and 201790 transitions. [2023-12-19 01:25:59,754 INFO L78 Accepts]: Start accepts. Automaton has 139567 states and 201790 transitions. Word has length 115 [2023-12-19 01:25:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:25:59,754 INFO L495 AbstractCegarLoop]: Abstraction has 139567 states and 201790 transitions. [2023-12-19 01:25:59,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:25:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 139567 states and 201790 transitions. [2023-12-19 01:25:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:25:59,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:25:59,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:25:59,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:25:59,763 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:25:59,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:25:59,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1728791402, now seen corresponding path program 1 times [2023-12-19 01:25:59,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:25:59,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853485159] [2023-12-19 01:25:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:25:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:25:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:25:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:25:59,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:25:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853485159] [2023-12-19 01:25:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853485159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:25:59,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:25:59,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:25:59,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518907799] [2023-12-19 01:25:59,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:25:59,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:25:59,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:25:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:25:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:25:59,967 INFO L87 Difference]: Start difference. First operand 139567 states and 201790 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:26:09,038 INFO L93 Difference]: Finished difference Result 382913 states and 558663 transitions. [2023-12-19 01:26:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:26:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 115 [2023-12-19 01:26:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:26:09,933 INFO L225 Difference]: With dead ends: 382913 [2023-12-19 01:26:09,933 INFO L226 Difference]: Without dead ends: 351295 [2023-12-19 01:26:10,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:26:10,060 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 11776 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11776 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:26:10,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11776 Valid, 5054 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:26:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351295 states. [2023-12-19 01:26:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351295 to 171183. [2023-12-19 01:26:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171183 states, 171181 states have (on average 1.4472517393869646) internal successors, (247742), 171182 states have internal predecessors, (247742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171183 states to 171183 states and 247742 transitions. [2023-12-19 01:26:17,842 INFO L78 Accepts]: Start accepts. Automaton has 171183 states and 247742 transitions. Word has length 115 [2023-12-19 01:26:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:26:17,842 INFO L495 AbstractCegarLoop]: Abstraction has 171183 states and 247742 transitions. [2023-12-19 01:26:17,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 171183 states and 247742 transitions. [2023-12-19 01:26:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:26:17,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:26:17,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:26:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:26:17,852 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:26:17,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:26:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1688847466, now seen corresponding path program 1 times [2023-12-19 01:26:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:26:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581143614] [2023-12-19 01:26:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:26:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:26:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:26:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:26:18,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:26:18,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581143614] [2023-12-19 01:26:18,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581143614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:26:18,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:26:18,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:26:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370901707] [2023-12-19 01:26:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:26:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:26:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:26:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:26:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:26:18,065 INFO L87 Difference]: Start difference. First operand 171183 states and 247742 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:26:29,367 INFO L93 Difference]: Finished difference Result 414529 states and 604615 transitions. [2023-12-19 01:26:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:26:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 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 115 [2023-12-19 01:26:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:26:30,145 INFO L225 Difference]: With dead ends: 414529 [2023-12-19 01:26:30,145 INFO L226 Difference]: Without dead ends: 382911 [2023-12-19 01:26:30,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:26:30,325 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 11829 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11829 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:26:30,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11829 Valid, 5048 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:26:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382911 states. [2023-12-19 01:26:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382911 to 202799. [2023-12-19 01:26:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202799 states, 202797 states have (on average 1.448216689596) internal successors, (293694), 202798 states have internal predecessors, (293694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202799 states to 202799 states and 293694 transitions. [2023-12-19 01:26:39,615 INFO L78 Accepts]: Start accepts. Automaton has 202799 states and 293694 transitions. Word has length 115 [2023-12-19 01:26:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:26:39,615 INFO L495 AbstractCegarLoop]: Abstraction has 202799 states and 293694 transitions. [2023-12-19 01:26:39,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 202799 states and 293694 transitions. [2023-12-19 01:26:39,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:26:39,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:26:39,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:26:39,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:26:39,625 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:26:39,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:26:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1980463766, now seen corresponding path program 1 times [2023-12-19 01:26:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:26:39,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005444821] [2023-12-19 01:26:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:26:39,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:26:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:26:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:26:39,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:26:39,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005444821] [2023-12-19 01:26:39,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005444821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:26:39,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:26:39,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:26:39,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477211245] [2023-12-19 01:26:39,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:26:39,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:26:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:26:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:26:39,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:26:39,856 INFO L87 Difference]: Start difference. First operand 202799 states and 293694 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:26:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:26:52,205 INFO L93 Difference]: Finished difference Result 446145 states and 650567 transitions. [2023-12-19 01:26:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:26:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 01:26:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:26:53,287 INFO L225 Difference]: With dead ends: 446145 [2023-12-19 01:26:53,287 INFO L226 Difference]: Without dead ends: 414527 [2023-12-19 01:26:53,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:26:53,378 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11893 mSDsluCounter, 3404 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11893 SdHoareTripleChecker+Valid, 5088 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:26:53,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11893 Valid, 5088 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:26:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414527 states. [2023-12-19 01:27:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414527 to 234415. [2023-12-19 01:27:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234415 states, 234413 states have (on average 1.4489213482187422) internal successors, (339646), 234414 states have internal predecessors, (339646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:27:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234415 states to 234415 states and 339646 transitions. [2023-12-19 01:27:04,329 INFO L78 Accepts]: Start accepts. Automaton has 234415 states and 339646 transitions. Word has length 115 [2023-12-19 01:27:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:27:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 234415 states and 339646 transitions. [2023-12-19 01:27:04,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:27:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 234415 states and 339646 transitions. [2023-12-19 01:27:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:27:04,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:27:04,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:27:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:27:04,340 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:27:04,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:27:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1425770090, now seen corresponding path program 1 times [2023-12-19 01:27:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:27:04,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081543998] [2023-12-19 01:27:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:27:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:27:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:27:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 01:27:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:27:04,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081543998] [2023-12-19 01:27:04,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081543998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:27:04,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:27:04,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:27:04,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923127585] [2023-12-19 01:27:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:27:04,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:27:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:27:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:27:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:27:04,816 INFO L87 Difference]: Start difference. First operand 234415 states and 339646 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:27:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:27:18,307 INFO L93 Difference]: Finished difference Result 477761 states and 696519 transitions. [2023-12-19 01:27:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:27:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 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 115 [2023-12-19 01:27:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:27:19,607 INFO L225 Difference]: With dead ends: 477761 [2023-12-19 01:27:19,607 INFO L226 Difference]: Without dead ends: 446143 [2023-12-19 01:27:19,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:27:19,740 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11704 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11704 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:27:19,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11704 Valid, 5212 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:27:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446143 states. [2023-12-19 01:27:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446143 to 266031. [2023-12-19 01:27:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266031 states, 266029 states have (on average 1.4494585176804033) internal successors, (385598), 266030 states have internal predecessors, (385598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:27:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266031 states to 266031 states and 385598 transitions. [2023-12-19 01:27:31,504 INFO L78 Accepts]: Start accepts. Automaton has 266031 states and 385598 transitions. Word has length 115 [2023-12-19 01:27:31,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:27:31,505 INFO L495 AbstractCegarLoop]: Abstraction has 266031 states and 385598 transitions. [2023-12-19 01:27:31,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:27:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 266031 states and 385598 transitions. [2023-12-19 01:27:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:27:31,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:27:31,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:27:31,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:27:31,515 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:27:31,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:27:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1049821546, now seen corresponding path program 1 times [2023-12-19 01:27:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:27:31,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950568638] [2023-12-19 01:27:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:27:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:27:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:27:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:27:31,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:27:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950568638] [2023-12-19 01:27:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950568638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:27:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:27:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:27:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447794066] [2023-12-19 01:27:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:27:31,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:27:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:27:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:27:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:27:31,691 INFO L87 Difference]: Start difference. First operand 266031 states and 385598 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:27:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:27:47,385 INFO L93 Difference]: Finished difference Result 509377 states and 742471 transitions. [2023-12-19 01:27:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:27:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 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 115 [2023-12-19 01:27:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:27:48,716 INFO L225 Difference]: With dead ends: 509377 [2023-12-19 01:27:48,716 INFO L226 Difference]: Without dead ends: 477759 [2023-12-19 01:27:48,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:27:48,849 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 11609 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11609 SdHoareTripleChecker+Valid, 5524 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:27:48,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11609 Valid, 5524 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:27:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477759 states. [2023-12-19 01:28:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477759 to 297647. [2023-12-19 01:28:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297647 states, 297645 states have (on average 1.4498815703270675) internal successors, (431550), 297646 states have internal predecessors, (431550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297647 states to 297647 states and 431550 transitions. [2023-12-19 01:28:03,154 INFO L78 Accepts]: Start accepts. Automaton has 297647 states and 431550 transitions. Word has length 115 [2023-12-19 01:28:03,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:03,155 INFO L495 AbstractCegarLoop]: Abstraction has 297647 states and 431550 transitions. [2023-12-19 01:28:03,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 297647 states and 431550 transitions. [2023-12-19 01:28:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 01:28:03,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:03,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:03,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:28:03,167 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:03,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash 654455618, now seen corresponding path program 1 times [2023-12-19 01:28:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:03,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110593121] [2023-12-19 01:28:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:03,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110593121] [2023-12-19 01:28:03,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110593121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:03,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:03,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407964991] [2023-12-19 01:28:03,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:03,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:03,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:03,605 INFO L87 Difference]: Start difference. First operand 297647 states and 431550 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:14,348 INFO L93 Difference]: Finished difference Result 588467 states and 854464 transitions. [2023-12-19 01:28:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:14,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-12-19 01:28:14,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:14,917 INFO L225 Difference]: With dead ends: 588467 [2023-12-19 01:28:14,917 INFO L226 Difference]: Without dead ends: 297649 [2023-12-19 01:28:15,037 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 [2023-12-19 01:28:15,038 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 69 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:15,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 3241 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297649 states. [2023-12-19 01:28:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297649 to 297647. [2023-12-19 01:28:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297647 states, 297645 states have (on average 1.4380554015689833) internal successors, (428030), 297646 states have internal predecessors, (428030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297647 states to 297647 states and 428030 transitions. [2023-12-19 01:28:28,165 INFO L78 Accepts]: Start accepts. Automaton has 297647 states and 428030 transitions. Word has length 116 [2023-12-19 01:28:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:28,165 INFO L495 AbstractCegarLoop]: Abstraction has 297647 states and 428030 transitions. [2023-12-19 01:28:28,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 297647 states and 428030 transitions. [2023-12-19 01:28:28,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 01:28:28,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:28,172 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:28:28,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:28:28,173 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:28,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 225212574, now seen corresponding path program 1 times [2023-12-19 01:28:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946253482] [2023-12-19 01:28:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:28,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946253482] [2023-12-19 01:28:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946253482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:28,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631477888] [2023-12-19 01:28:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:28,650 INFO L87 Difference]: Start difference. First operand 297647 states and 428030 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:33,004 INFO L93 Difference]: Finished difference Result 402251 states and 580057 transitions. [2023-12-19 01:28:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-19 01:28:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:33,186 INFO L225 Difference]: With dead ends: 402251 [2023-12-19 01:28:33,186 INFO L226 Difference]: Without dead ends: 111433 [2023-12-19 01:28:33,282 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 [2023-12-19 01:28:33,283 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 63 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:33,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3238 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111433 states. [2023-12-19 01:28:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111433 to 111426. [2023-12-19 01:28:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111426 states, 111424 states have (on average 1.430939474439977) internal successors, (159441), 111425 states have internal predecessors, (159441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111426 states to 111426 states and 159441 transitions. [2023-12-19 01:28:38,054 INFO L78 Accepts]: Start accepts. Automaton has 111426 states and 159441 transitions. Word has length 117 [2023-12-19 01:28:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:38,055 INFO L495 AbstractCegarLoop]: Abstraction has 111426 states and 159441 transitions. [2023-12-19 01:28:38,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:38,055 INFO L276 IsEmpty]: Start isEmpty. Operand 111426 states and 159441 transitions. [2023-12-19 01:28:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 01:28:38,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:38,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:38,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:28:38,059 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:38,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1402918288, now seen corresponding path program 1 times [2023-12-19 01:28:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:38,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947190351] [2023-12-19 01:28:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:38,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:38,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:38,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947190351] [2023-12-19 01:28:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947190351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:38,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217109974] [2023-12-19 01:28:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:38,138 INFO L87 Difference]: Start difference. First operand 111426 states and 159441 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:40,180 INFO L93 Difference]: Finished difference Result 163718 states and 234835 transitions. [2023-12-19 01:28:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-19 01:28:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:40,268 INFO L225 Difference]: With dead ends: 163718 [2023-12-19 01:28:40,268 INFO L226 Difference]: Without dead ends: 59140 [2023-12-19 01:28:40,308 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 [2023-12-19 01:28:40,308 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 65 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:40,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:40,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59140 states. [2023-12-19 01:28:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59140 to 59138. [2023-12-19 01:28:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59138 states, 59136 states have (on average 1.4110017586580086) internal successors, (83441), 59137 states have internal predecessors, (83441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59138 states to 59138 states and 83441 transitions. [2023-12-19 01:28:42,618 INFO L78 Accepts]: Start accepts. Automaton has 59138 states and 83441 transitions. Word has length 118 [2023-12-19 01:28:42,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:42,618 INFO L495 AbstractCegarLoop]: Abstraction has 59138 states and 83441 transitions. [2023-12-19 01:28:42,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:42,618 INFO L276 IsEmpty]: Start isEmpty. Operand 59138 states and 83441 transitions. [2023-12-19 01:28:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 01:28:42,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:42,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:42,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:28:42,621 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:42,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1067057502, now seen corresponding path program 1 times [2023-12-19 01:28:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584138381] [2023-12-19 01:28:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:42,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:42,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584138381] [2023-12-19 01:28:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584138381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:42,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379108847] [2023-12-19 01:28:42,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:42,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:42,708 INFO L87 Difference]: Start difference. First operand 59138 states and 83441 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:43,784 INFO L93 Difference]: Finished difference Result 85286 states and 120835 transitions. [2023-12-19 01:28:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:43,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-12-19 01:28:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:43,826 INFO L225 Difference]: With dead ends: 85286 [2023-12-19 01:28:43,826 INFO L226 Difference]: Without dead ends: 32996 [2023-12-19 01:28:43,853 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 [2023-12-19 01:28:43,854 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 62 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:43,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3202 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32996 states. [2023-12-19 01:28:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32996 to 32994. [2023-12-19 01:28:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32994 states, 32992 states have (on average 1.3865482541222114) internal successors, (45745), 32993 states have internal predecessors, (45745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32994 states to 32994 states and 45745 transitions. [2023-12-19 01:28:45,002 INFO L78 Accepts]: Start accepts. Automaton has 32994 states and 45745 transitions. Word has length 120 [2023-12-19 01:28:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:45,002 INFO L495 AbstractCegarLoop]: Abstraction has 32994 states and 45745 transitions. [2023-12-19 01:28:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 32994 states and 45745 transitions. [2023-12-19 01:28:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 01:28:45,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:45,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:28:45,007 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:45,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:45,007 INFO L85 PathProgramCache]: Analyzing trace with hash -844327252, now seen corresponding path program 1 times [2023-12-19 01:28:45,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:45,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169981469] [2023-12-19 01:28:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:45,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169981469] [2023-12-19 01:28:45,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169981469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:45,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:45,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421175399] [2023-12-19 01:28:45,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:45,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:45,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:45,210 INFO L87 Difference]: Start difference. First operand 32994 states and 45745 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:45,734 INFO L93 Difference]: Finished difference Result 46070 states and 64291 transitions. [2023-12-19 01:28:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:45,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-12-19 01:28:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:45,760 INFO L225 Difference]: With dead ends: 46070 [2023-12-19 01:28:45,760 INFO L226 Difference]: Without dead ends: 19924 [2023-12-19 01:28:45,777 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 [2023-12-19 01:28:45,778 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 59 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:45,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3187 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:45,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19924 states. [2023-12-19 01:28:46,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19924 to 19922. [2023-12-19 01:28:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19922 states, 19920 states have (on average 1.3578815261044177) internal successors, (27049), 19921 states have internal predecessors, (27049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19922 states to 19922 states and 27049 transitions. [2023-12-19 01:28:46,423 INFO L78 Accepts]: Start accepts. Automaton has 19922 states and 27049 transitions. Word has length 122 [2023-12-19 01:28:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:46,423 INFO L495 AbstractCegarLoop]: Abstraction has 19922 states and 27049 transitions. [2023-12-19 01:28:46,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 19922 states and 27049 transitions. [2023-12-19 01:28:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 01:28:46,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:46,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:46,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 01:28:46,425 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:46,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash 573011322, now seen corresponding path program 1 times [2023-12-19 01:28:46,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:46,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34591060] [2023-12-19 01:28:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:46,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34591060] [2023-12-19 01:28:46,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34591060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:46,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:46,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:46,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459427706] [2023-12-19 01:28:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:46,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:46,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:46,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:46,598 INFO L87 Difference]: Start difference. First operand 19922 states and 27049 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:46,838 INFO L93 Difference]: Finished difference Result 26462 states and 36247 transitions. [2023-12-19 01:28:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:46,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-12-19 01:28:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:46,852 INFO L225 Difference]: With dead ends: 26462 [2023-12-19 01:28:46,852 INFO L226 Difference]: Without dead ends: 13388 [2023-12-19 01:28:46,861 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 [2023-12-19 01:28:46,862 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 56 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:46,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3172 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2023-12-19 01:28:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 13386. [2023-12-19 01:28:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13386 states, 13384 states have (on average 1.3282277346084876) internal successors, (17777), 13385 states have internal predecessors, (17777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13386 states to 13386 states and 17777 transitions. [2023-12-19 01:28:47,287 INFO L78 Accepts]: Start accepts. Automaton has 13386 states and 17777 transitions. Word has length 124 [2023-12-19 01:28:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:47,287 INFO L495 AbstractCegarLoop]: Abstraction has 13386 states and 17777 transitions. [2023-12-19 01:28:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13386 states and 17777 transitions. [2023-12-19 01:28:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 01:28:47,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:47,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:47,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 01:28:47,288 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:47,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1895005640, now seen corresponding path program 1 times [2023-12-19 01:28:47,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:47,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128867606] [2023-12-19 01:28:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:47,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:47,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128867606] [2023-12-19 01:28:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128867606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:47,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:47,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:47,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4650594] [2023-12-19 01:28:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:47,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:47,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:47,366 INFO L87 Difference]: Start difference. First operand 13386 states and 17777 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:47,504 INFO L93 Difference]: Finished difference Result 16658 states and 22339 transitions. [2023-12-19 01:28:47,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:47,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-12-19 01:28:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:47,515 INFO L225 Difference]: With dead ends: 16658 [2023-12-19 01:28:47,515 INFO L226 Difference]: Without dead ends: 10120 [2023-12-19 01:28:47,522 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 [2023-12-19 01:28:47,523 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 53 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:47,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3157 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10120 states. [2023-12-19 01:28:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10120 to 10118. [2023-12-19 01:28:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10118 states, 10116 states have (on average 1.3027876631079478) internal successors, (13179), 10117 states have internal predecessors, (13179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10118 states to 10118 states and 13179 transitions. [2023-12-19 01:28:47,702 INFO L78 Accepts]: Start accepts. Automaton has 10118 states and 13179 transitions. Word has length 126 [2023-12-19 01:28:47,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:47,702 INFO L495 AbstractCegarLoop]: Abstraction has 10118 states and 13179 transitions. [2023-12-19 01:28:47,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 10118 states and 13179 transitions. [2023-12-19 01:28:47,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 01:28:47,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:47,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:47,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 01:28:47,703 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:47,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:47,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1267830678, now seen corresponding path program 1 times [2023-12-19 01:28:47,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:47,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225347995] [2023-12-19 01:28:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:47,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:47,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225347995] [2023-12-19 01:28:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225347995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:28:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:28:47,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:28:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952678824] [2023-12-19 01:28:47,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:28:47,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:28:47,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:47,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:28:47,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:47,773 INFO L87 Difference]: Start difference. First operand 10118 states and 13179 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:47,861 INFO L93 Difference]: Finished difference Result 11756 states and 15442 transitions. [2023-12-19 01:28:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:28:47,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-12-19 01:28:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:47,870 INFO L225 Difference]: With dead ends: 11756 [2023-12-19 01:28:47,870 INFO L226 Difference]: Without dead ends: 8486 [2023-12-19 01:28:47,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:28:47,873 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 50 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:47,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3142 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:28:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2023-12-19 01:28:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 8484. [2023-12-19 01:28:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8484 states, 8482 states have (on average 1.2849563782126856) internal successors, (10899), 8483 states have internal predecessors, (10899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8484 states to 8484 states and 10899 transitions. [2023-12-19 01:28:48,051 INFO L78 Accepts]: Start accepts. Automaton has 8484 states and 10899 transitions. Word has length 128 [2023-12-19 01:28:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:48,051 INFO L495 AbstractCegarLoop]: Abstraction has 8484 states and 10899 transitions. [2023-12-19 01:28:48,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8484 states and 10899 transitions. [2023-12-19 01:28:48,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 01:28:48,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:48,053 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:28:48,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-19 01:28:48,053 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:48,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1864010468, now seen corresponding path program 1 times [2023-12-19 01:28:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897694000] [2023-12-19 01:28:48,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897694000] [2023-12-19 01:28:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897694000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:28:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871178964] [2023-12-19 01:28:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:48,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:28:48,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:28:48,806 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) [2023-12-19 01:28:48,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:28:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:49,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:28:49,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:28:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:28:49,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:28:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:28:49,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871178964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:28:49,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:28:49,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 01:28:49,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838999390] [2023-12-19 01:28:49,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:28:49,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 01:28:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:49,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 01:28:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 01:28:49,528 INFO L87 Difference]: Start difference. First operand 8484 states and 10899 transitions. Second operand has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:51,761 INFO L93 Difference]: Finished difference Result 19863 states and 26096 transitions. [2023-12-19 01:28:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 01:28:51,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 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 130 [2023-12-19 01:28:51,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:51,778 INFO L225 Difference]: With dead ends: 19863 [2023-12-19 01:28:51,779 INFO L226 Difference]: Without dead ends: 18227 [2023-12-19 01:28:51,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 01:28:51,784 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 13998 mSDsluCounter, 6655 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13998 SdHoareTripleChecker+Valid, 8211 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:51,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13998 Valid, 8211 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:28:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18227 states. [2023-12-19 01:28:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18227 to 17675. [2023-12-19 01:28:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17675 states, 17673 states have (on average 1.2963843150568664) internal successors, (22911), 17674 states have internal predecessors, (22911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17675 states to 17675 states and 22911 transitions. [2023-12-19 01:28:52,305 INFO L78 Accepts]: Start accepts. Automaton has 17675 states and 22911 transitions. Word has length 130 [2023-12-19 01:28:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:28:52,305 INFO L495 AbstractCegarLoop]: Abstraction has 17675 states and 22911 transitions. [2023-12-19 01:28:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 17675 states and 22911 transitions. [2023-12-19 01:28:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:28:52,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:28:52,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:28:52,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 01:28:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 01:28:52,513 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:28:52,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:28:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1497519242, now seen corresponding path program 1 times [2023-12-19 01:28:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:28:52,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790204466] [2023-12-19 01:28:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:28:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:28:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790204466] [2023-12-19 01:28:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790204466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:28:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352596309] [2023-12-19 01:28:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:28:53,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:28:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:28:53,216 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) [2023-12-19 01:28:53,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:28:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:28:53,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:28:53,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:28:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:54,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:28:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:28:54,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352596309] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:28:54,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:28:54,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-19 01:28:54,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219592420] [2023-12-19 01:28:54,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:28:54,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 01:28:54,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:28:54,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 01:28:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:28:54,932 INFO L87 Difference]: Start difference. First operand 17675 states and 22911 transitions. Second operand has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:28:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:28:58,736 INFO L93 Difference]: Finished difference Result 67836 states and 89097 transitions. [2023-12-19 01:28:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-19 01:28:58,737 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 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 131 [2023-12-19 01:28:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:28:58,818 INFO L225 Difference]: With dead ends: 67836 [2023-12-19 01:28:58,818 INFO L226 Difference]: Without dead ends: 57324 [2023-12-19 01:28:58,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=914, Invalid=3642, Unknown=0, NotChecked=0, Total=4556 [2023-12-19 01:28:58,839 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 23309 mSDsluCounter, 8309 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23309 SdHoareTripleChecker+Valid, 9861 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:28:58,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23309 Valid, 9861 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:28:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57324 states. [2023-12-19 01:29:00,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57324 to 54824. [2023-12-19 01:29:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54824 states, 54822 states have (on average 1.3023238845718872) internal successors, (71396), 54823 states have internal predecessors, (71396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54824 states to 54824 states and 71396 transitions. [2023-12-19 01:29:01,084 INFO L78 Accepts]: Start accepts. Automaton has 54824 states and 71396 transitions. Word has length 131 [2023-12-19 01:29:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:29:01,084 INFO L495 AbstractCegarLoop]: Abstraction has 54824 states and 71396 transitions. [2023-12-19 01:29:01,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 54824 states and 71396 transitions. [2023-12-19 01:29:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:29:01,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:29:01,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:29:01,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:29:01,292 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,SelfDestructingSolverStorable35 [2023-12-19 01:29:01,292 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:29:01,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:29:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash 461844106, now seen corresponding path program 1 times [2023-12-19 01:29:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:29:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851034402] [2023-12-19 01:29:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:29:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:29:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:29:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:29:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851034402] [2023-12-19 01:29:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851034402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:29:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237651221] [2023-12-19 01:29:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:29:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:29:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:29:03,070 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) [2023-12-19 01:29:03,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:29:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:29:03,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:29:03,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:29:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:03,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:29:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237651221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:29:04,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:29:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2023-12-19 01:29:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439429285] [2023-12-19 01:29:04,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:29:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 01:29:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:29:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 01:29:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:29:04,658 INFO L87 Difference]: Start difference. First operand 54824 states and 71396 transitions. Second operand has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:29:08,260 INFO L93 Difference]: Finished difference Result 152232 states and 198323 transitions. [2023-12-19 01:29:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:29:08,261 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 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 131 [2023-12-19 01:29:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:29:08,409 INFO L225 Difference]: With dead ends: 152232 [2023-12-19 01:29:08,410 INFO L226 Difference]: Without dead ends: 109628 [2023-12-19 01:29:08,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 01:29:08,434 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 19073 mSDsluCounter, 6580 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19073 SdHoareTripleChecker+Valid, 8130 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:29:08,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19073 Valid, 8130 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:29:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109628 states. [2023-12-19 01:29:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109628 to 104232. [2023-12-19 01:29:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104232 states, 104230 states have (on average 1.290626499088554) internal successors, (134522), 104231 states have internal predecessors, (134522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104232 states to 104232 states and 134522 transitions. [2023-12-19 01:29:12,771 INFO L78 Accepts]: Start accepts. Automaton has 104232 states and 134522 transitions. Word has length 131 [2023-12-19 01:29:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:29:12,771 INFO L495 AbstractCegarLoop]: Abstraction has 104232 states and 134522 transitions. [2023-12-19 01:29:12,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 104232 states and 134522 transitions. [2023-12-19 01:29:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 01:29:12,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:29:12,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:29:12,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:29:12,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:29:12,984 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:29:12,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:29:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2144445994, now seen corresponding path program 1 times [2023-12-19 01:29:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:29:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289292017] [2023-12-19 01:29:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:29:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:29:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:29:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:14,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:29:14,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289292017] [2023-12-19 01:29:14,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289292017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:29:14,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709044452] [2023-12-19 01:29:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:29:14,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:29:14,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:29:14,132 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) [2023-12-19 01:29:14,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:29:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:29:14,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:29:14,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:29:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:14,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:29:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709044452] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:29:15,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:29:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:29:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165819540] [2023-12-19 01:29:15,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:29:15,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:29:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:29:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:29:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:29:15,736 INFO L87 Difference]: Start difference. First operand 104232 states and 134522 transitions. Second operand has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:29:25,465 INFO L93 Difference]: Finished difference Result 312950 states and 401847 transitions. [2023-12-19 01:29:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 01:29:25,466 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 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 [2023-12-19 01:29:25,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:29:26,026 INFO L225 Difference]: With dead ends: 312950 [2023-12-19 01:29:26,026 INFO L226 Difference]: Without dead ends: 220992 [2023-12-19 01:29:26,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=697, Invalid=2963, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 01:29:26,138 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 26327 mSDsluCounter, 7935 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26327 SdHoareTripleChecker+Valid, 9562 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:29:26,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26327 Valid, 9562 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:29:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220992 states. [2023-12-19 01:29:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220992 to 183898. [2023-12-19 01:29:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183898 states, 183896 states have (on average 1.273888502196894) internal successors, (234263), 183897 states have internal predecessors, (234263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183898 states to 183898 states and 234263 transitions. [2023-12-19 01:29:35,330 INFO L78 Accepts]: Start accepts. Automaton has 183898 states and 234263 transitions. Word has length 132 [2023-12-19 01:29:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:29:35,330 INFO L495 AbstractCegarLoop]: Abstraction has 183898 states and 234263 transitions. [2023-12-19 01:29:35,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:29:35,330 INFO L276 IsEmpty]: Start isEmpty. Operand 183898 states and 234263 transitions. [2023-12-19 01:29:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 01:29:35,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:29:35,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:29:35,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:29:35,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 01:29:35,543 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:29:35,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:29:35,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1929597782, now seen corresponding path program 1 times [2023-12-19 01:29:35,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:29:35,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102415573] [2023-12-19 01:29:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:29:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:29:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:29:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:36,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:29:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102415573] [2023-12-19 01:29:36,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102415573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:29:36,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720201928] [2023-12-19 01:29:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:29:36,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:29:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:29:36,533 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) [2023-12-19 01:29:36,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:29:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:29:36,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:29:36,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:29:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:37,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:29:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:29:38,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720201928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:29:38,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:29:38,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:29:38,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109767723] [2023-12-19 01:29:38,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:29:38,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:29:38,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:29:38,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:29:38,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:29:38,267 INFO L87 Difference]: Start difference. First operand 183898 states and 234263 transitions. Second operand has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:30:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:30:00,017 INFO L93 Difference]: Finished difference Result 727848 states and 930202 transitions. [2023-12-19 01:30:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-19 01:30:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 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 133 [2023-12-19 01:30:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:30:01,466 INFO L225 Difference]: With dead ends: 727848 [2023-12-19 01:30:01,466 INFO L226 Difference]: Without dead ends: 564108 [2023-12-19 01:30:01,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=737, Invalid=3295, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 01:30:01,688 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 20830 mSDsluCounter, 8731 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20830 SdHoareTripleChecker+Valid, 10284 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:30:01,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20830 Valid, 10284 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:30:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564108 states. [2023-12-19 01:30:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564108 to 354790. [2023-12-19 01:30:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354790 states, 354788 states have (on average 1.2708490704307924) internal successors, (450882), 354789 states have internal predecessors, (450882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:30:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354790 states to 354790 states and 450882 transitions. [2023-12-19 01:30:20,331 INFO L78 Accepts]: Start accepts. Automaton has 354790 states and 450882 transitions. Word has length 133 [2023-12-19 01:30:20,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:30:20,332 INFO L495 AbstractCegarLoop]: Abstraction has 354790 states and 450882 transitions. [2023-12-19 01:30:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:30:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 354790 states and 450882 transitions. [2023-12-19 01:30:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 01:30:20,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:30:20,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:30:20,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 01:30:20,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 01:30:20,546 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:30:20,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:30:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1199371178, now seen corresponding path program 1 times [2023-12-19 01:30:20,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:30:20,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157680111] [2023-12-19 01:30:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:30:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:21,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:30:21,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157680111] [2023-12-19 01:30:21,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157680111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:30:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016018353] [2023-12-19 01:30:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:30:21,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:30:21,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:30:21,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:30:21,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 01:30:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:30:22,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:30:22,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:30:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:22,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:30:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:30:24,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016018353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:30:24,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:30:24,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-19 01:30:24,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501387486] [2023-12-19 01:30:24,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:30:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 01:30:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:30:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 01:30:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 01:30:24,197 INFO L87 Difference]: Start difference. First operand 354790 states and 450882 transitions. Second operand has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:31:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:31:13,637 INFO L93 Difference]: Finished difference Result 1694666 states and 2164860 transitions. [2023-12-19 01:31:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:31:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 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 134 [2023-12-19 01:31:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:31:17,166 INFO L225 Difference]: With dead ends: 1694666 [2023-12-19 01:31:17,166 INFO L226 Difference]: Without dead ends: 1356163 [2023-12-19 01:31:17,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1186, Invalid=5134, Unknown=0, NotChecked=0, Total=6320 [2023-12-19 01:31:17,852 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 25233 mSDsluCounter, 8758 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25233 SdHoareTripleChecker+Valid, 10313 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:31:17,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25233 Valid, 10313 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:31:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356163 states.