/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:00:56,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:00:56,926 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 13:00:56,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:00:56,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:00:56,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:00:56,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:00:56,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:00:56,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:00:56,955 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:00:56,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:00:56,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:00:56,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:00:56,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:00:56,957 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:00:56,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:00:56,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:00:56,958 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:00:56,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:00:56,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:00:56,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:00:56,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:00:56,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:00:56,959 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:00:56,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:00:56,959 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:00:56,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:00:56,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:00:56,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:00:56,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:00:56,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:00:56,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:00:56,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:00:56,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:00:56,962 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:00:56,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:00:56,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:00:56,962 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:00:57,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:00:57,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:00:57,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:00:57,174 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:00:57,174 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:00:57,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2023-12-20 13:00:58,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:00:58,616 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:00:58,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2023-12-20 13:00:58,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96a7a4663/d9ea01bf6df24d30864f518204c3d229/FLAGcccf85c55 [2023-12-20 13:00:58,660 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96a7a4663/d9ea01bf6df24d30864f518204c3d229 [2023-12-20 13:00:58,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:00:58,662 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:00:58,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:00:58,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:00:58,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:00:58,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:00:58" (1/1) ... [2023-12-20 13:00:58,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b010a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:58, skipping insertion in model container [2023-12-20 13:00:58,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:00:58" (1/1) ... [2023-12-20 13:00:58,757 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:00:59,027 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.4.ufo.BOUNDED-8.pals+Problem12_label04.c[8616,8629] [2023-12-20 13:00:59,073 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.4.ufo.BOUNDED-8.pals+Problem12_label04.c[15677,15690] [2023-12-20 13:00:59,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:00:59,547 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:00:59,580 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.4.ufo.BOUNDED-8.pals+Problem12_label04.c[8616,8629] [2023-12-20 13:00:59,587 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.4.ufo.BOUNDED-8.pals+Problem12_label04.c[15677,15690] [2023-12-20 13:00:59,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:00:59,924 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:00:59,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59 WrapperNode [2023-12-20 13:00:59,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:00:59,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:00:59,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:00:59,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:00:59,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:00:59,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,232 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5035 [2023-12-20 13:01:00,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:01:00,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:01:00,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:01:00,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:01:00,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,433 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 13:01:00,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,655 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:01:00,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:01:00,657 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:01:00,657 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:01:00,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (1/1) ... [2023-12-20 13:01:00,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:01:00,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:00,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 13:01:00,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 13:01:00,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:01:00,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:01:00,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:01:00,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:01:00,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:01:00,906 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:01:03,781 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:01:03,820 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:01:03,820 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:01:03,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:03 BoogieIcfgContainer [2023-12-20 13:01:03,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:01:03,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:01:03,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:01:03,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:01:03,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:00:58" (1/3) ... [2023-12-20 13:01:03,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7deca59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:03, skipping insertion in model container [2023-12-20 13:01:03,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:00:59" (2/3) ... [2023-12-20 13:01:03,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7deca59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:01:03, skipping insertion in model container [2023-12-20 13:01:03,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:01:03" (3/3) ... [2023-12-20 13:01:03,825 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2023-12-20 13:01:03,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:01:03,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:01:03,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:01:03,907 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;@12367641, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:01:03,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:01:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:01:03,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:03,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:03,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:03,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -404549255, now seen corresponding path program 1 times [2023-12-20 13:01:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:03,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530499660] [2023-12-20 13:01:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530499660] [2023-12-20 13:01:04,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530499660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:01:04,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616712854] [2023-12-20 13:01:04,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:01:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:01:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:01:04,139 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,214 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-12-20 13:01:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:01:04,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 13:01:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,226 INFO L225 Difference]: With dead ends: 1613 [2023-12-20 13:01:04,226 INFO L226 Difference]: Without dead ends: 816 [2023-12-20 13:01:04,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:01:04,232 INFO L413 NwaCegarLoop]: 1545 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, 1545 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 [2023-12-20 13:01:04,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-20 13:01:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-20 13:01:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-20 13:01:04,274 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-20 13:01:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,274 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-20 13:01:04,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-20 13:01:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 13:01:04,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:04,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:01:04,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1684412933, now seen corresponding path program 1 times [2023-12-20 13:01:04,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92078248] [2023-12-20 13:01:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92078248] [2023-12-20 13:01:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92078248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:01:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244312527] [2023-12-20 13:01:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:01:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:01:04,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:04,436 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,509 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-12-20 13:01:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:01:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-20 13:01:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,512 INFO L225 Difference]: With dead ends: 889 [2023-12-20 13:01:04,512 INFO L226 Difference]: Without dead ends: 851 [2023-12-20 13:01:04,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:04,514 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:04,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:01:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-20 13:01:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-12-20 13:01:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-20 13:01:04,526 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-20 13:01:04,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,526 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-20 13:01:04,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,526 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-20 13:01:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-20 13:01:04,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,527 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] [2023-12-20 13:01:04,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:01:04,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1796642934, now seen corresponding path program 1 times [2023-12-20 13:01:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237786109] [2023-12-20 13:01:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237786109] [2023-12-20 13:01:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237786109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159151903] [2023-12-20 13:01:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:04,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:04,627 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,837 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-20 13:01:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 13:01:04,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-20 13:01:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,841 INFO L225 Difference]: With dead ends: 1096 [2023-12-20 13:01:04,841 INFO L226 Difference]: Without dead ends: 1061 [2023-12-20 13:01:04,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:01:04,842 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:04,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:01:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-20 13:01:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-20 13:01:04,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-20 13:01:04,855 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-20 13:01:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,855 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-20 13:01:04,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,855 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-20 13:01:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 13:01:04,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,856 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] [2023-12-20 13:01:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:01:04,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash -125681594, now seen corresponding path program 1 times [2023-12-20 13:01:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444240814] [2023-12-20 13:01:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:04,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:04,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:04,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444240814] [2023-12-20 13:01:04,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444240814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:04,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:04,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610816137] [2023-12-20 13:01:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:04,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:04,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:04,896 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:04,918 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-20 13:01:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 13:01:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:04,921 INFO L225 Difference]: With dead ends: 974 [2023-12-20 13:01:04,921 INFO L226 Difference]: Without dead ends: 906 [2023-12-20 13:01:04,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:04,922 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 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 [2023-12-20 13:01:04,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-20 13:01:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-20 13:01:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 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) [2023-12-20 13:01:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-20 13:01:04,934 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-20 13:01:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:04,935 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-20 13:01:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-20 13:01:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-20 13:01:04,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:04,936 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] [2023-12-20 13:01:04,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:01:04,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:04,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -123536642, now seen corresponding path program 1 times [2023-12-20 13:01:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095781219] [2023-12-20 13:01:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095781219] [2023-12-20 13:01:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095781219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104970089] [2023-12-20 13:01:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:05,067 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,168 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-20 13:01:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:05,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-20 13:01:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,171 INFO L225 Difference]: With dead ends: 1029 [2023-12-20 13:01:05,171 INFO L226 Difference]: Without dead ends: 906 [2023-12-20 13:01:05,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 13:01:05,172 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 4440 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:05,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1669 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-20 13:01:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-20 13:01:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-20 13:01:05,185 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-20 13:01:05,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,185 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-20 13:01:05,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-20 13:01:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-20 13:01:05,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,186 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] [2023-12-20 13:01:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:01:05,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash 336976631, now seen corresponding path program 1 times [2023-12-20 13:01:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954000424] [2023-12-20 13:01:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954000424] [2023-12-20 13:01:05,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954000424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:01:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222481961] [2023-12-20 13:01:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:01:05,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:01:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:05,273 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,303 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-20 13:01:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:01:05,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-20 13:01:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,307 INFO L225 Difference]: With dead ends: 912 [2023-12-20 13:01:05,307 INFO L226 Difference]: Without dead ends: 910 [2023-12-20 13:01:05,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:05,309 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 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 [2023-12-20 13:01:05,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-20 13:01:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-20 13:01:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-20 13:01:05,331 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-20 13:01:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,332 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-20 13:01:05,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-20 13:01:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:05,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:01:05,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash 514996542, now seen corresponding path program 1 times [2023-12-20 13:01:05,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834038130] [2023-12-20 13:01:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834038130] [2023-12-20 13:01:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834038130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019527511] [2023-12-20 13:01:05,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,397 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,423 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-20 13:01:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,427 INFO L225 Difference]: With dead ends: 1046 [2023-12-20 13:01:05,428 INFO L226 Difference]: Without dead ends: 974 [2023-12-20 13:01:05,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,430 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 [2023-12-20 13:01:05,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-20 13:01:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-20 13:01:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-20 13:01:05,444 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-20 13:01:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,446 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-20 13:01:05,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-20 13:01:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,447 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] [2023-12-20 13:01:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:01:05,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -70715586, now seen corresponding path program 1 times [2023-12-20 13:01:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640918122] [2023-12-20 13:01:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640918122] [2023-12-20 13:01:05,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640918122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059764966] [2023-12-20 13:01:05,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,509 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,534 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-20 13:01:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,538 INFO L225 Difference]: With dead ends: 1326 [2023-12-20 13:01:05,538 INFO L226 Difference]: Without dead ends: 1137 [2023-12-20 13:01:05,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,540 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 [2023-12-20 13:01:05,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-20 13:01:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-20 13:01:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-20 13:01:05,564 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-20 13:01:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,564 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-20 13:01:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-20 13:01:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,565 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] [2023-12-20 13:01:05,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:01:05,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 818017854, now seen corresponding path program 1 times [2023-12-20 13:01:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228324780] [2023-12-20 13:01:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228324780] [2023-12-20 13:01:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228324780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826108935] [2023-12-20 13:01:05,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,596 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,624 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-20 13:01:05,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,629 INFO L225 Difference]: With dead ends: 1791 [2023-12-20 13:01:05,629 INFO L226 Difference]: Without dead ends: 1439 [2023-12-20 13:01:05,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,630 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 [2023-12-20 13:01:05,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-20 13:01:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-20 13:01:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-20 13:01:05,655 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-20 13:01:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,656 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-20 13:01:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-20 13:01:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-20 13:01:05,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,657 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] [2023-12-20 13:01:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:01:05,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash 554940478, now seen corresponding path program 1 times [2023-12-20 13:01:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131253005] [2023-12-20 13:01:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131253005] [2023-12-20 13:01:05,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131253005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379739715] [2023-12-20 13:01:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,687 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:05,722 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-20 13:01:05,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:05,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-20 13:01:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:05,727 INFO L225 Difference]: With dead ends: 2649 [2023-12-20 13:01:05,728 INFO L226 Difference]: Without dead ends: 1995 [2023-12-20 13:01:05,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:05,729 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 [2023-12-20 13:01:05,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-20 13:01:05,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-20 13:01:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-20 13:01:05,767 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-20 13:01:05,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:05,767 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-20 13:01:05,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:05,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-20 13:01:05,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 13:01:05,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:05,768 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] [2023-12-20 13:01:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:01:05,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:05,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:05,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2121035277, now seen corresponding path program 1 times [2023-12-20 13:01:05,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:05,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927851701] [2023-12-20 13:01:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:05,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927851701] [2023-12-20 13:01:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927851701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:05,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:05,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:05,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347427828] [2023-12-20 13:01:05,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:05,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:01:05,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:01:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:01:05,853 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:10,747 INFO L93 Difference]: Finished difference Result 4248 states and 7522 transitions. [2023-12-20 13:01:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:01:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-20 13:01:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:10,757 INFO L225 Difference]: With dead ends: 4248 [2023-12-20 13:01:10,758 INFO L226 Difference]: Without dead ends: 3495 [2023-12-20 13:01:10,759 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 [2023-12-20 13:01:10,764 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2364 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:10,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 791 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-20 13:01:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2023-12-20 13:01:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2023-12-20 13:01:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3493 states have (on average 1.4855425135986258) internal successors, (5189), 3494 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5189 transitions. [2023-12-20 13:01:10,823 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5189 transitions. Word has length 60 [2023-12-20 13:01:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 5189 transitions. [2023-12-20 13:01:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5189 transitions. [2023-12-20 13:01:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:10,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:10,824 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:01:10,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:01:10,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:10,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1873610167, now seen corresponding path program 1 times [2023-12-20 13:01:10,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:10,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888842250] [2023-12-20 13:01:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:01:10,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:10,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888842250] [2023-12-20 13:01:10,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888842250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:10,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:10,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:10,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919716390] [2023-12-20 13:01:10,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:10,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:10,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:10,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:10,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:10,901 INFO L87 Difference]: Start difference. First operand 3495 states and 5189 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:11,065 INFO L93 Difference]: Finished difference Result 8257 states and 12050 transitions. [2023-12-20 13:01:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:11,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:11,083 INFO L225 Difference]: With dead ends: 8257 [2023-12-20 13:01:11,083 INFO L226 Difference]: Without dead ends: 7391 [2023-12-20 13:01:11,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:11,086 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:11,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:01:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2023-12-20 13:01:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 4535. [2023-12-20 13:01:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.471211118464593) internal successors, (6669), 4534 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6669 transitions. [2023-12-20 13:01:11,205 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6669 transitions. Word has length 61 [2023-12-20 13:01:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:11,206 INFO L495 AbstractCegarLoop]: Abstraction has 4535 states and 6669 transitions. [2023-12-20 13:01:11,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:11,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6669 transitions. [2023-12-20 13:01:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:11,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:11,207 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:01:11,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:01:11,207 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:11,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:11,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1287898039, now seen corresponding path program 1 times [2023-12-20 13:01:11,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:11,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207431903] [2023-12-20 13:01:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:01:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207431903] [2023-12-20 13:01:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207431903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:11,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:11,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230534381] [2023-12-20 13:01:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:11,303 INFO L87 Difference]: Start difference. First operand 4535 states and 6669 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:11,538 INFO L93 Difference]: Finished difference Result 9465 states and 13778 transitions. [2023-12-20 13:01:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:11,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:11,564 INFO L225 Difference]: With dead ends: 9465 [2023-12-20 13:01:11,564 INFO L226 Difference]: Without dead ends: 8255 [2023-12-20 13:01:11,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:11,568 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:11,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2023-12-20 13:01:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 6175. [2023-12-20 13:01:11,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6173 states have (on average 1.4574761056212537) internal successors, (8997), 6174 states have internal predecessors, (8997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 8997 transitions. [2023-12-20 13:01:11,758 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 8997 transitions. Word has length 61 [2023-12-20 13:01:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:11,758 INFO L495 AbstractCegarLoop]: Abstraction has 6175 states and 8997 transitions. [2023-12-20 13:01:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 8997 transitions. [2023-12-20 13:01:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:11,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:11,760 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:01:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:01:11,760 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:11,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2118335817, now seen corresponding path program 1 times [2023-12-20 13:01:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132511132] [2023-12-20 13:01:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:01:11,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:11,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132511132] [2023-12-20 13:01:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132511132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:11,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398047295] [2023-12-20 13:01:11,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:11,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:11,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:11,841 INFO L87 Difference]: Start difference. First operand 6175 states and 8997 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:12,057 INFO L93 Difference]: Finished difference Result 10673 states and 15498 transitions. [2023-12-20 13:01:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:12,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:12,071 INFO L225 Difference]: With dead ends: 10673 [2023-12-20 13:01:12,071 INFO L226 Difference]: Without dead ends: 9463 [2023-12-20 13:01:12,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:12,075 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:12,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2023-12-20 13:01:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 7383. [2023-12-20 13:01:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7381 states have (on average 1.4519712776046607) internal successors, (10717), 7382 states have internal predecessors, (10717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10717 transitions. [2023-12-20 13:01:12,253 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10717 transitions. Word has length 61 [2023-12-20 13:01:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:12,253 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 10717 transitions. [2023-12-20 13:01:12,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10717 transitions. [2023-12-20 13:01:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 13:01:12,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:12,257 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:01:12,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:01:12,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:12,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:12,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1913554103, now seen corresponding path program 1 times [2023-12-20 13:01:12,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:12,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559103756] [2023-12-20 13:01:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:12,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:01:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559103756] [2023-12-20 13:01:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559103756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:12,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:12,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 13:01:12,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169423696] [2023-12-20 13:01:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:12,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 13:01:12,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:12,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 13:01:12,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 13:01:12,334 INFO L87 Difference]: Start difference. First operand 7383 states and 10717 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:12,537 INFO L93 Difference]: Finished difference Result 11881 states and 17218 transitions. [2023-12-20 13:01:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:01:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-20 13:01:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:12,551 INFO L225 Difference]: With dead ends: 11881 [2023-12-20 13:01:12,551 INFO L226 Difference]: Without dead ends: 10671 [2023-12-20 13:01:12,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:01:12,556 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:12,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2023-12-20 13:01:12,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 8591. [2023-12-20 13:01:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.448014902782629) internal successors, (12437), 8590 states have internal predecessors, (12437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12437 transitions. [2023-12-20 13:01:12,743 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12437 transitions. Word has length 61 [2023-12-20 13:01:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:12,744 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12437 transitions. [2023-12-20 13:01:12,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12437 transitions. [2023-12-20 13:01:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 13:01:12,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:12,745 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] [2023-12-20 13:01:12,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:01:12,745 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:12,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1134695091, now seen corresponding path program 1 times [2023-12-20 13:01:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:12,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411062326] [2023-12-20 13:01:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:12,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:12,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411062326] [2023-12-20 13:01:12,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411062326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:12,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:12,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507887452] [2023-12-20 13:01:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:12,793 INFO L87 Difference]: Start difference. First operand 8591 states and 12437 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:12,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:12,992 INFO L93 Difference]: Finished difference Result 14899 states and 21431 transitions. [2023-12-20 13:01:12,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-20 13:01:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:13,002 INFO L225 Difference]: With dead ends: 14899 [2023-12-20 13:01:13,002 INFO L226 Difference]: Without dead ends: 8593 [2023-12-20 13:01:13,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,007 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 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 [2023-12-20 13:01:13,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2023-12-20 13:01:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2023-12-20 13:01:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4335778321108394) internal successors, (12313), 8590 states have internal predecessors, (12313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12313 transitions. [2023-12-20 13:01:13,194 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12313 transitions. Word has length 62 [2023-12-20 13:01:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:13,194 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 12313 transitions. [2023-12-20 13:01:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12313 transitions. [2023-12-20 13:01:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 13:01:13,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:13,195 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] [2023-12-20 13:01:13,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:01:13,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:13,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash 558947071, now seen corresponding path program 1 times [2023-12-20 13:01:13,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:13,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466408917] [2023-12-20 13:01:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:13,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:13,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:13,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466408917] [2023-12-20 13:01:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466408917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:13,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495705641] [2023-12-20 13:01:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:13,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:13,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,241 INFO L87 Difference]: Start difference. First operand 8591 states and 12313 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:13,307 INFO L93 Difference]: Finished difference Result 10987 states and 15720 transitions. [2023-12-20 13:01:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:13,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-20 13:01:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:13,313 INFO L225 Difference]: With dead ends: 10987 [2023-12-20 13:01:13,313 INFO L226 Difference]: Without dead ends: 4681 [2023-12-20 13:01:13,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,319 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 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 [2023-12-20 13:01:13,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2023-12-20 13:01:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4674. [2023-12-20 13:01:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4672 states have (on average 1.4554794520547945) internal successors, (6800), 4673 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6800 transitions. [2023-12-20 13:01:13,390 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6800 transitions. Word has length 63 [2023-12-20 13:01:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:13,390 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 6800 transitions. [2023-12-20 13:01:13,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6800 transitions. [2023-12-20 13:01:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 13:01:13,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:13,391 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:01:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:01:13,391 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:13,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1485090395, now seen corresponding path program 1 times [2023-12-20 13:01:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:13,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535883021] [2023-12-20 13:01:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:13,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:13,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535883021] [2023-12-20 13:01:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535883021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:13,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:13,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570501129] [2023-12-20 13:01:13,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:13,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:13,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,446 INFO L87 Difference]: Start difference. First operand 4674 states and 6800 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:13,482 INFO L93 Difference]: Finished difference Result 5866 states and 8474 transitions. [2023-12-20 13:01:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:13,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-20 13:01:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:13,487 INFO L225 Difference]: With dead ends: 5866 [2023-12-20 13:01:13,488 INFO L226 Difference]: Without dead ends: 3488 [2023-12-20 13:01:13,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,491 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 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 [2023-12-20 13:01:13,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:13,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2023-12-20 13:01:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2023-12-20 13:01:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3484 states have (on average 1.465556831228473) internal successors, (5106), 3485 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5106 transitions. [2023-12-20 13:01:13,538 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5106 transitions. Word has length 64 [2023-12-20 13:01:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:13,538 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 5106 transitions. [2023-12-20 13:01:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5106 transitions. [2023-12-20 13:01:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 13:01:13,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:13,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:01:13,540 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:13,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1800255255, now seen corresponding path program 1 times [2023-12-20 13:01:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184885074] [2023-12-20 13:01:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184885074] [2023-12-20 13:01:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184885074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:01:13,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:01:13,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:01:13,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832882957] [2023-12-20 13:01:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:01:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:01:13,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:13,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:01:13,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,596 INFO L87 Difference]: Start difference. First operand 3486 states and 5106 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:13,623 INFO L93 Difference]: Finished difference Result 4084 states and 5933 transitions. [2023-12-20 13:01:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:01:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-20 13:01:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:13,627 INFO L225 Difference]: With dead ends: 4084 [2023-12-20 13:01:13,627 INFO L226 Difference]: Without dead ends: 2894 [2023-12-20 13:01:13,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:01:13,629 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 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 [2023-12-20 13:01:13,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:01:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2023-12-20 13:01:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2892. [2023-12-20 13:01:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2890 states have (on average 1.4775086505190311) internal successors, (4270), 2891 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4270 transitions. [2023-12-20 13:01:13,661 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4270 transitions. Word has length 66 [2023-12-20 13:01:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:13,662 INFO L495 AbstractCegarLoop]: Abstraction has 2892 states and 4270 transitions. [2023-12-20 13:01:13,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4270 transitions. [2023-12-20 13:01:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 13:01:13,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:13,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:13,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:01:13,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:13,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash -200565513, now seen corresponding path program 1 times [2023-12-20 13:01:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:13,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720591976] [2023-12-20 13:01:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720591976] [2023-12-20 13:01:14,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720591976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026011338] [2023-12-20 13:01:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:14,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:14,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:14,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 13:01:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:14,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 13:01:14,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:01:14,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:01:15,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026011338] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:15,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:15,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 13:01:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900468867] [2023-12-20 13:01:15,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 13:01:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 13:01:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 13:01:15,115 INFO L87 Difference]: Start difference. First operand 2892 states and 4270 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:17,086 INFO L93 Difference]: Finished difference Result 7047 states and 9763 transitions. [2023-12-20 13:01:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-20 13:01:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 68 [2023-12-20 13:01:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:17,095 INFO L225 Difference]: With dead ends: 7047 [2023-12-20 13:01:17,096 INFO L226 Difference]: Without dead ends: 6451 [2023-12-20 13:01:17,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 13:01:17,099 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 12838 mSDsluCounter, 6253 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12838 SdHoareTripleChecker+Valid, 7755 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:17,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12838 Valid, 7755 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:01:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2023-12-20 13:01:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6123. [2023-12-20 13:01:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6121 states have (on average 1.3719980395360236) internal successors, (8398), 6122 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 8398 transitions. [2023-12-20 13:01:17,292 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 8398 transitions. Word has length 68 [2023-12-20 13:01:17,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:17,293 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 8398 transitions. [2023-12-20 13:01:17,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:17,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 8398 transitions. [2023-12-20 13:01:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 13:01:17,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:17,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:17,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:17,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:17,500 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:17,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1703842709, now seen corresponding path program 1 times [2023-12-20 13:01:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:17,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003765180] [2023-12-20 13:01:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:18,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003765180] [2023-12-20 13:01:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003765180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:18,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640153106] [2023-12-20 13:01:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:18,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:18,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:18,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 13:01:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:18,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:18,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:19,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:19,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640153106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:19,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:19,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-20 13:01:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922868018] [2023-12-20 13:01:19,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 13:01:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 13:01:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 13:01:19,899 INFO L87 Difference]: Start difference. First operand 6123 states and 8398 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:22,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:22,528 INFO L93 Difference]: Finished difference Result 20650 states and 27142 transitions. [2023-12-20 13:01:22,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:01:22,529 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-20 13:01:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:22,552 INFO L225 Difference]: With dead ends: 20650 [2023-12-20 13:01:22,552 INFO L226 Difference]: Without dead ends: 16960 [2023-12-20 13:01:22,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 13:01:22,557 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 24602 mSDsluCounter, 9349 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24602 SdHoareTripleChecker+Valid, 10847 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:22,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24602 Valid, 10847 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:01:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16960 states. [2023-12-20 13:01:22,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16960 to 15272. [2023-12-20 13:01:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15272 states, 15270 states have (on average 1.3167648984937788) internal successors, (20107), 15271 states have internal predecessors, (20107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15272 states to 15272 states and 20107 transitions. [2023-12-20 13:01:22,875 INFO L78 Accepts]: Start accepts. Automaton has 15272 states and 20107 transitions. Word has length 69 [2023-12-20 13:01:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:22,875 INFO L495 AbstractCegarLoop]: Abstraction has 15272 states and 20107 transitions. [2023-12-20 13:01:22,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 15272 states and 20107 transitions. [2023-12-20 13:01:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 13:01:22,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:22,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:22,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 13:01:23,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-20 13:01:23,082 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:23,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1383295715, now seen corresponding path program 1 times [2023-12-20 13:01:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146747592] [2023-12-20 13:01:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:23,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146747592] [2023-12-20 13:01:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146747592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059339359] [2023-12-20 13:01:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:23,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:23,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:23,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:23,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 13:01:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:23,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:23,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:23,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059339359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:24,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:24,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 13:01:24,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588256765] [2023-12-20 13:01:24,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:24,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:01:24,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:24,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:01:24,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:01:24,588 INFO L87 Difference]: Start difference. First operand 15272 states and 20107 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:26,830 INFO L93 Difference]: Finished difference Result 41402 states and 53130 transitions. [2023-12-20 13:01:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 13:01:26,830 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-12-20 13:01:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:26,864 INFO L225 Difference]: With dead ends: 41402 [2023-12-20 13:01:26,865 INFO L226 Difference]: Without dead ends: 28854 [2023-12-20 13:01:26,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 13:01:26,885 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 26280 mSDsluCounter, 9343 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26280 SdHoareTripleChecker+Valid, 10845 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:26,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26280 Valid, 10845 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 13:01:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28854 states. [2023-12-20 13:01:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28854 to 22568. [2023-12-20 13:01:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22568 states, 22566 states have (on average 1.286714526278472) internal successors, (29036), 22567 states have internal predecessors, (29036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22568 states to 22568 states and 29036 transitions. [2023-12-20 13:01:27,519 INFO L78 Accepts]: Start accepts. Automaton has 22568 states and 29036 transitions. Word has length 69 [2023-12-20 13:01:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:27,519 INFO L495 AbstractCegarLoop]: Abstraction has 22568 states and 29036 transitions. [2023-12-20 13:01:27,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22568 states and 29036 transitions. [2023-12-20 13:01:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 13:01:27,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:27,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:27,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:27,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:27,726 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:27,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1708631371, now seen corresponding path program 1 times [2023-12-20 13:01:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:27,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865527659] [2023-12-20 13:01:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:28,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:28,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865527659] [2023-12-20 13:01:28,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865527659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:28,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102078591] [2023-12-20 13:01:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:28,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:28,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:28,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:28,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:01:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:28,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:28,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:28,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:29,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102078591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:29,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:29,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-12-20 13:01:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63301554] [2023-12-20 13:01:29,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 13:01:29,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 13:01:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-12-20 13:01:29,469 INFO L87 Difference]: Start difference. First operand 22568 states and 29036 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:32,907 INFO L93 Difference]: Finished difference Result 62775 states and 78648 transitions. [2023-12-20 13:01:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 13:01:32,907 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-20 13:01:32,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:32,951 INFO L225 Difference]: With dead ends: 62775 [2023-12-20 13:01:32,952 INFO L226 Difference]: Without dead ends: 44016 [2023-12-20 13:01:32,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-12-20 13:01:32,971 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 11508 mSDsluCounter, 18245 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11508 SdHoareTripleChecker+Valid, 19741 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:32,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11508 Valid, 19741 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:01:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44016 states. [2023-12-20 13:01:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44016 to 36004. [2023-12-20 13:01:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36004 states, 36002 states have (on average 1.2568746180767736) internal successors, (45250), 36003 states have internal predecessors, (45250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36004 states to 36004 states and 45250 transitions. [2023-12-20 13:01:34,032 INFO L78 Accepts]: Start accepts. Automaton has 36004 states and 45250 transitions. Word has length 70 [2023-12-20 13:01:34,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:34,032 INFO L495 AbstractCegarLoop]: Abstraction has 36004 states and 45250 transitions. [2023-12-20 13:01:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:34,032 INFO L276 IsEmpty]: Start isEmpty. Operand 36004 states and 45250 transitions. [2023-12-20 13:01:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 13:01:34,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:34,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:34,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 13:01:34,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:34,239 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:34,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:34,240 INFO L85 PathProgramCache]: Analyzing trace with hash -993642665, now seen corresponding path program 1 times [2023-12-20 13:01:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158292554] [2023-12-20 13:01:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:34,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158292554] [2023-12-20 13:01:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158292554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123615946] [2023-12-20 13:01:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:34,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:34,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:34,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:01:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:34,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:01:34,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:36,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:37,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123615946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:37,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:37,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-12-20 13:01:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3990126] [2023-12-20 13:01:37,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-20 13:01:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-20 13:01:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 13:01:37,447 INFO L87 Difference]: Start difference. First operand 36004 states and 45250 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:48,543 INFO L93 Difference]: Finished difference Result 92442 states and 116362 transitions. [2023-12-20 13:01:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-12-20 13:01:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-20 13:01:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:48,623 INFO L225 Difference]: With dead ends: 92442 [2023-12-20 13:01:48,623 INFO L226 Difference]: Without dead ends: 79076 [2023-12-20 13:01:48,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-12-20 13:01:48,638 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 23642 mSDsluCounter, 19375 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23642 SdHoareTripleChecker+Valid, 20941 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:48,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23642 Valid, 20941 Invalid, 2370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 13:01:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79076 states. [2023-12-20 13:01:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79076 to 31888. [2023-12-20 13:01:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31888 states, 31886 states have (on average 1.2563193878191055) internal successors, (40059), 31887 states have internal predecessors, (40059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31888 states to 31888 states and 40059 transitions. [2023-12-20 13:01:49,964 INFO L78 Accepts]: Start accepts. Automaton has 31888 states and 40059 transitions. Word has length 71 [2023-12-20 13:01:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:49,964 INFO L495 AbstractCegarLoop]: Abstraction has 31888 states and 40059 transitions. [2023-12-20 13:01:49,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 31888 states and 40059 transitions. [2023-12-20 13:01:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 13:01:49,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:49,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:49,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:50,170 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,SelfDestructingSolverStorable23 [2023-12-20 13:01:50,172 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:50,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1559480371, now seen corresponding path program 1 times [2023-12-20 13:01:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:50,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150583515] [2023-12-20 13:01:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:50,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:50,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150583515] [2023-12-20 13:01:50,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150583515] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:50,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125148419] [2023-12-20 13:01:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:50,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:50,601 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) [2023-12-20 13:01:50,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:01:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:50,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:01:50,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:51,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:52,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125148419] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:52,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-12-20 13:01:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654772182] [2023-12-20 13:01:52,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 13:01:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:52,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 13:01:52,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 13:01:52,538 INFO L87 Difference]: Start difference. First operand 31888 states and 40059 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:01:54,373 INFO L93 Difference]: Finished difference Result 44456 states and 55071 transitions. [2023-12-20 13:01:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 13:01:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 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 71 [2023-12-20 13:01:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:01:54,406 INFO L225 Difference]: With dead ends: 44456 [2023-12-20 13:01:54,407 INFO L226 Difference]: Without dead ends: 31088 [2023-12-20 13:01:54,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 13:01:54,419 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 9368 mSDsluCounter, 12071 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9368 SdHoareTripleChecker+Valid, 13565 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:01:54,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9368 Valid, 13565 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:01:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31088 states. [2023-12-20 13:01:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31088 to 26579. [2023-12-20 13:01:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26579 states, 26577 states have (on average 1.2584565601836175) internal successors, (33446), 26578 states have internal predecessors, (33446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26579 states to 26579 states and 33446 transitions. [2023-12-20 13:01:55,697 INFO L78 Accepts]: Start accepts. Automaton has 26579 states and 33446 transitions. Word has length 71 [2023-12-20 13:01:55,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:01:55,699 INFO L495 AbstractCegarLoop]: Abstraction has 26579 states and 33446 transitions. [2023-12-20 13:01:55,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:01:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 26579 states and 33446 transitions. [2023-12-20 13:01:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 13:01:55,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:01:55,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:01:55,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:01:55,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:55,933 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:01:55,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:01:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1823993817, now seen corresponding path program 1 times [2023-12-20 13:01:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:01:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704501903] [2023-12-20 13:01:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:55,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:01:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:57,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:01:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704501903] [2023-12-20 13:01:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704501903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:01:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889227699] [2023-12-20 13:01:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:01:57,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:01:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:01:57,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:01:57,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:01:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:01:57,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:01:57,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:01:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:58,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:01:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:01:59,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889227699] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:01:59,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:01:59,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-12-20 13:01:59,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500186864] [2023-12-20 13:01:59,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:01:59,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-20 13:01:59,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:01:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-20 13:01:59,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 13:01:59,557 INFO L87 Difference]: Start difference. First operand 26579 states and 33446 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:20,881 INFO L93 Difference]: Finished difference Result 62805 states and 77806 transitions. [2023-12-20 13:02:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-20 13:02:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 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 72 [2023-12-20 13:02:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:20,935 INFO L225 Difference]: With dead ends: 62805 [2023-12-20 13:02:20,935 INFO L226 Difference]: Without dead ends: 51308 [2023-12-20 13:02:20,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=9044, Invalid=40462, Unknown=0, NotChecked=0, Total=49506 [2023-12-20 13:02:20,945 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 21582 mSDsluCounter, 28349 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21582 SdHoareTripleChecker+Valid, 29962 SdHoareTripleChecker+Invalid, 4963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:20,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21582 Valid, 29962 Invalid, 4963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 4795 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 13:02:20,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51308 states. [2023-12-20 13:02:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51308 to 23104. [2023-12-20 13:02:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23104 states, 23102 states have (on average 1.2619253744264567) internal successors, (29153), 23103 states have internal predecessors, (29153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 29153 transitions. [2023-12-20 13:02:21,981 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 29153 transitions. Word has length 72 [2023-12-20 13:02:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:21,981 INFO L495 AbstractCegarLoop]: Abstraction has 23104 states and 29153 transitions. [2023-12-20 13:02:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 29153 transitions. [2023-12-20 13:02:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 13:02:21,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:21,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:02:21,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:02:22,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:22,190 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:22,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash 112844093, now seen corresponding path program 1 times [2023-12-20 13:02:22,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:22,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405802216] [2023-12-20 13:02:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405802216] [2023-12-20 13:02:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405802216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142029785] [2023-12-20 13:02:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:22,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:22,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:23,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:02:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:23,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:23,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:23,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:25,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142029785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:25,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:25,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:02:25,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971824853] [2023-12-20 13:02:25,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:02:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:02:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:02:25,026 INFO L87 Difference]: Start difference. First operand 23104 states and 29153 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:26,572 INFO L93 Difference]: Finished difference Result 35052 states and 44012 transitions. [2023-12-20 13:02:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 13:02:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 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 113 [2023-12-20 13:02:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:26,598 INFO L225 Difference]: With dead ends: 35052 [2023-12-20 13:02:26,598 INFO L226 Difference]: Without dead ends: 24420 [2023-12-20 13:02:26,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 13:02:26,611 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 10521 mSDsluCounter, 9116 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10521 SdHoareTripleChecker+Valid, 10632 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10521 Valid, 10632 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 13:02:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24420 states. [2023-12-20 13:02:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24420 to 23104. [2023-12-20 13:02:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23104 states, 23102 states have (on average 1.2512336594234266) internal successors, (28906), 23103 states have internal predecessors, (28906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23104 states to 23104 states and 28906 transitions. [2023-12-20 13:02:27,689 INFO L78 Accepts]: Start accepts. Automaton has 23104 states and 28906 transitions. Word has length 113 [2023-12-20 13:02:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:27,690 INFO L495 AbstractCegarLoop]: Abstraction has 23104 states and 28906 transitions. [2023-12-20 13:02:27,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 23104 states and 28906 transitions. [2023-12-20 13:02:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-20 13:02:27,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:27,693 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:02:27,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 13:02:27,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 13:02:27,915 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:27,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2082253373, now seen corresponding path program 1 times [2023-12-20 13:02:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816866696] [2023-12-20 13:02:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:28,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816866696] [2023-12-20 13:02:28,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816866696] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:28,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011843672] [2023-12-20 13:02:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:28,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:28,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:28,453 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:28,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:02:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:28,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:02:28,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:29,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:30,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011843672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:30,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:30,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-20 13:02:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097915805] [2023-12-20 13:02:30,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 13:02:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:30,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 13:02:30,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 13:02:30,778 INFO L87 Difference]: Start difference. First operand 23104 states and 28906 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:02:34,468 INFO L93 Difference]: Finished difference Result 39933 states and 49685 transitions. [2023-12-20 13:02:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 13:02:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 113 [2023-12-20 13:02:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:02:34,490 INFO L225 Difference]: With dead ends: 39933 [2023-12-20 13:02:34,490 INFO L226 Difference]: Without dead ends: 24152 [2023-12-20 13:02:34,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1384, Invalid=5588, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 13:02:34,503 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 19825 mSDsluCounter, 12417 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19825 SdHoareTripleChecker+Valid, 13922 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:02:34,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19825 Valid, 13922 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:02:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24152 states. [2023-12-20 13:02:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24152 to 17211. [2023-12-20 13:02:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17211 states, 17209 states have (on average 1.2419664129234702) internal successors, (21373), 17210 states have internal predecessors, (21373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17211 states to 17211 states and 21373 transitions. [2023-12-20 13:02:35,401 INFO L78 Accepts]: Start accepts. Automaton has 17211 states and 21373 transitions. Word has length 113 [2023-12-20 13:02:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:02:35,401 INFO L495 AbstractCegarLoop]: Abstraction has 17211 states and 21373 transitions. [2023-12-20 13:02:35,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:02:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17211 states and 21373 transitions. [2023-12-20 13:02:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 13:02:35,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:02:35,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:02:35,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 13:02:35,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:02:35,609 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:02:35,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:02:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash -52835317, now seen corresponding path program 1 times [2023-12-20 13:02:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:02:35,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060615920] [2023-12-20 13:02:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:35,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:02:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:02:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060615920] [2023-12-20 13:02:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060615920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:02:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831291386] [2023-12-20 13:02:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:02:36,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:02:36,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:02:36,098 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:02:36,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:02:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:02:36,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 13:02:36,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:02:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:37,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:02:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:02:39,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831291386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:02:39,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:02:39,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-12-20 13:02:39,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950956643] [2023-12-20 13:02:39,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:02:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-20 13:02:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:02:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-20 13:02:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 13:02:39,872 INFO L87 Difference]: Start difference. First operand 17211 states and 21373 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:03:17,056 INFO L93 Difference]: Finished difference Result 38114 states and 46409 transitions. [2023-12-20 13:03:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-12-20 13:03:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-20 13:03:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:03:17,088 INFO L225 Difference]: With dead ends: 38114 [2023-12-20 13:03:17,088 INFO L226 Difference]: Without dead ends: 28829 [2023-12-20 13:03:17,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34604 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=10783, Invalid=79517, Unknown=0, NotChecked=0, Total=90300 [2023-12-20 13:03:17,113 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 31851 mSDsluCounter, 27062 mSDsCounter, 0 mSdLazyCounter, 4225 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31851 SdHoareTripleChecker+Valid, 28635 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:03:17,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31851 Valid, 28635 Invalid, 4458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [233 Valid, 4225 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 13:03:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28829 states. [2023-12-20 13:03:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28829 to 20392. [2023-12-20 13:03:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20392 states, 20390 states have (on average 1.221824423737126) internal successors, (24913), 20391 states have internal predecessors, (24913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20392 states to 20392 states and 24913 transitions. [2023-12-20 13:03:18,324 INFO L78 Accepts]: Start accepts. Automaton has 20392 states and 24913 transitions. Word has length 114 [2023-12-20 13:03:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:03:18,324 INFO L495 AbstractCegarLoop]: Abstraction has 20392 states and 24913 transitions. [2023-12-20 13:03:18,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:03:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 20392 states and 24913 transitions. [2023-12-20 13:03:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-20 13:03:18,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:03:18,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 13:03:18,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 13:03:18,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 13:03:18,548 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:03:18,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:03:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash -751252595, now seen corresponding path program 1 times [2023-12-20 13:03:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:03:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815500787] [2023-12-20 13:03:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:03:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:03:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815500787] [2023-12-20 13:03:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815500787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:03:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925750370] [2023-12-20 13:03:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:03:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:03:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:03:20,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:03:20,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:03:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:03:20,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:03:20,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:03:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:21,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:03:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:03:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925750370] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:03:24,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:03:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-12-20 13:03:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989418098] [2023-12-20 13:03:24,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:03:24,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-20 13:03:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:03:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-20 13:03:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 13:03:24,443 INFO L87 Difference]: Start difference. First operand 20392 states and 24913 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 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) [2023-12-20 13:05:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:05:02,797 INFO L93 Difference]: Finished difference Result 48341 states and 57937 transitions. [2023-12-20 13:05:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-12-20 13:05:02,798 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 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 115 [2023-12-20 13:05:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:05:02,835 INFO L225 Difference]: With dead ends: 48341 [2023-12-20 13:05:02,835 INFO L226 Difference]: Without dead ends: 42011 [2023-12-20 13:05:02,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84027 ImplicationChecksByTransitivity, 88.2s TimeCoverageRelationStatistics Valid=20781, Invalid=190359, Unknown=0, NotChecked=0, Total=211140 [2023-12-20 13:05:02,848 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 28829 mSDsluCounter, 49069 mSDsCounter, 0 mSdLazyCounter, 11802 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28829 SdHoareTripleChecker+Valid, 50826 SdHoareTripleChecker+Invalid, 12267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 11802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:05:02,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28829 Valid, 50826 Invalid, 12267 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [465 Valid, 11802 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-20 13:05:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42011 states. [2023-12-20 13:05:04,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42011 to 24368. [2023-12-20 13:05:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24368 states, 24366 states have (on average 1.2101288680948863) internal successors, (29486), 24367 states have internal predecessors, (29486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:05:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24368 states to 24368 states and 29486 transitions. [2023-12-20 13:05:04,779 INFO L78 Accepts]: Start accepts. Automaton has 24368 states and 29486 transitions. Word has length 115 [2023-12-20 13:05:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:05:04,779 INFO L495 AbstractCegarLoop]: Abstraction has 24368 states and 29486 transitions. [2023-12-20 13:05:04,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 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) [2023-12-20 13:05:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 24368 states and 29486 transitions. [2023-12-20 13:05:04,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 13:05:04,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:05:04,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:05:04,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 13:05:04,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:05:04,987 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:05:04,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:05:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1699959909, now seen corresponding path program 1 times [2023-12-20 13:05:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:05:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804155577] [2023-12-20 13:05:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:05:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:05:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:05:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:05:05,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:05:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804155577] [2023-12-20 13:05:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804155577] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:05:05,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844805869] [2023-12-20 13:05:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:05:05,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:05:05,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:05:05,696 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:05:05,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:05:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:05:05,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-20 13:05:05,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:05:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:05:09,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:05:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:05:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844805869] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:05:17,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:05:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-12-20 13:05:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335413208] [2023-12-20 13:05:17,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:05:17,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-20 13:05:17,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:05:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-20 13:05:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 13:05:17,483 INFO L87 Difference]: Start difference. First operand 24368 states and 29486 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:14:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:14:55,247 INFO L93 Difference]: Finished difference Result 99662 states and 119626 transitions. [2023-12-20 13:14:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1000 states. [2023-12-20 13:14:55,248 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-20 13:14:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:14:55,344 INFO L225 Difference]: With dead ends: 99662 [2023-12-20 13:14:55,345 INFO L226 Difference]: Without dead ends: 94221 [2023-12-20 13:14:55,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 1074 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528501 ImplicationChecksByTransitivity, 548.9s TimeCoverageRelationStatistics Valid=60963, Invalid=1095737, Unknown=0, NotChecked=0, Total=1156700 [2023-12-20 13:14:55,550 INFO L413 NwaCegarLoop]: 1750 mSDtfsCounter, 45920 mSDsluCounter, 49549 mSDsCounter, 0 mSdLazyCounter, 12619 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45920 SdHoareTripleChecker+Valid, 51299 SdHoareTripleChecker+Invalid, 13640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 12619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:14:55,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45920 Valid, 51299 Invalid, 13640 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1021 Valid, 12619 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-12-20 13:14:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94221 states. [2023-12-20 13:14:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94221 to 35811. [2023-12-20 13:14:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35811 states, 35809 states have (on average 1.202379290122595) internal successors, (43056), 35810 states have internal predecessors, (43056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:14:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35811 states to 35811 states and 43056 transitions. [2023-12-20 13:14:59,862 INFO L78 Accepts]: Start accepts. Automaton has 35811 states and 43056 transitions. Word has length 116 [2023-12-20 13:14:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:14:59,862 INFO L495 AbstractCegarLoop]: Abstraction has 35811 states and 43056 transitions. [2023-12-20 13:14:59,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:14:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 35811 states and 43056 transitions. [2023-12-20 13:14:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 13:14:59,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:14:59,865 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:14:59,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 13:15:00,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:15:00,070 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:15:00,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:15:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -744351429, now seen corresponding path program 1 times [2023-12-20 13:15:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:15:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542972880] [2023-12-20 13:15:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:15:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:15:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-20 13:15:01,067 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:15:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 13:15:01,068 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 117 with TraceHistMax 4,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 115 interpolants. [2023-12-20 13:15:01,069 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:15:01,071 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-20 13:15:01,073 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:15:01,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:15:01 BoogieIcfgContainer [2023-12-20 13:15:01,075 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:15:01,076 INFO L158 Benchmark]: Toolchain (without parser) took 842413.26ms. Allocated memory was 330.3MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 269.6MB in the beginning and 674.5MB in the end (delta: -404.9MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-20 13:15:01,076 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:15:01,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1260.29ms. Allocated memory is still 330.3MB. Free memory was 269.6MB in the beginning and 261.1MB in the end (delta: 8.5MB). Peak memory consumption was 193.0MB. Max. memory is 8.0GB. [2023-12-20 13:15:01,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 307.38ms. Allocated memory is still 330.3MB. Free memory was 261.1MB in the beginning and 230.5MB in the end (delta: 30.7MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. [2023-12-20 13:15:01,078 INFO L158 Benchmark]: Boogie Preprocessor took 422.27ms. Allocated memory was 330.3MB in the beginning and 660.6MB in the end (delta: 330.3MB). Free memory was 230.5MB in the beginning and 493.1MB in the end (delta: -262.7MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. [2023-12-20 13:15:01,079 INFO L158 Benchmark]: RCFGBuilder took 3163.89ms. Allocated memory was 660.6MB in the beginning and 1.0GB in the end (delta: 386.9MB). Free memory was 493.1MB in the beginning and 818.7MB in the end (delta: -325.6MB). Peak memory consumption was 162.4MB. Max. memory is 8.0GB. [2023-12-20 13:15:01,082 INFO L158 Benchmark]: TraceAbstraction took 837253.46ms. Allocated memory was 1.0GB in the beginning and 2.2GB in the end (delta: 1.2GB). Free memory was 818.2MB in the beginning and 674.5MB in the end (delta: 143.7MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-20 13:15:01,084 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1260.29ms. Allocated memory is still 330.3MB. Free memory was 269.6MB in the beginning and 261.1MB in the end (delta: 8.5MB). Peak memory consumption was 193.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 307.38ms. Allocated memory is still 330.3MB. Free memory was 261.1MB in the beginning and 230.5MB in the end (delta: 30.7MB). Peak memory consumption was 110.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 422.27ms. Allocated memory was 330.3MB in the beginning and 660.6MB in the end (delta: 330.3MB). Free memory was 230.5MB in the beginning and 493.1MB in the end (delta: -262.7MB). Peak memory consumption was 73.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3163.89ms. Allocated memory was 660.6MB in the beginning and 1.0GB in the end (delta: 386.9MB). Free memory was 493.1MB in the beginning and 818.7MB in the end (delta: -325.6MB). Peak memory consumption was 162.4MB. Max. memory is 8.0GB. * TraceAbstraction took 837253.46ms. Allocated memory was 1.0GB in the beginning and 2.2GB in the end (delta: 1.2GB). Free memory was 818.2MB in the beginning and 674.5MB in the end (delta: 143.7MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 359]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 359). Cancelled while NwaCegarLoop was analyzing trace of length 117 with TraceHistMax 4,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 115 interpolants. - TimeoutResultAtElement [Line: 557]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 557). Cancelled while NwaCegarLoop was analyzing trace of length 117 with TraceHistMax 4,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 115 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 837.2s, OverallIterations: 32, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 770.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306014 SdHoareTripleChecker+Valid, 45.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306014 mSDsluCounter, 317694 SdHoareTripleChecker+Invalid, 40.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 270363 mSDsCounter, 3636 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47416 IncrementalHoareTripleChecker+Invalid, 51052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3636 mSolverCounterUnsat, 47331 mSDtfsCounter, 47416 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4590 GetRequests, 1863 SyntacticMatches, 2 SemanticMatches, 2725 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680451 ImplicationChecksByTransitivity, 708.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36004occurred in iteration=23, InterpolantAutomatonStates: 2313, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.5s AutomataMinimizationTime, 31 MinimizatonAttempts, 198332 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 44.0s InterpolantComputationTime, 3070 NumberOfCodeBlocks, 3070 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 4076 ConstructedInterpolants, 0 QuantifiedInterpolants, 80683 SizeOfPredicates, 102 NumberOfNonLiveVariables, 5052 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 55 InterpolantComputations, 19 PerfectInterpolantSequences, 656/1802 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown