/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 12:03:26,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 12:03:26,848 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 12:03:26,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 12:03:26,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 12:03:26,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 12:03:26,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 12:03:26,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 12:03:26,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 12:03:26,891 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 12:03:26,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 12:03:26,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 12:03:26,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 12:03:26,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 12:03:26,893 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 12:03:26,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 12:03:26,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 12:03:26,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 12:03:26,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 12:03:26,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 12:03:26,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 12:03:26,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 12:03:26,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 12:03:26,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 12:03:26,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 12:03:26,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 12:03:26,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 12:03:26,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 12:03:26,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 12:03:26,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 12:03:26,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 12:03:26,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 12:03:26,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 12:03:26,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 12:03:26,907 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 12:03:26,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 12:03:26,907 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 12:03:26,907 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 12:03:27,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 12:03:27,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 12:03:27,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 12:03:27,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 12:03:27,111 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 12:03:27,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2023-12-21 12:03:28,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 12:03:28,367 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 12:03:28,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2023-12-21 12:03:28,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b2f536f/4cc7653f5ecf40788a946c8bf7fe007f/FLAG9f0a80d72 [2023-12-21 12:03:28,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b2f536f/4cc7653f5ecf40788a946c8bf7fe007f [2023-12-21 12:03:28,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 12:03:28,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 12:03:28,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 12:03:28,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 12:03:28,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 12:03:28,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bb6492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28, skipping insertion in model container [2023-12-21 12:03:28,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 12:03:28,666 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c[31172,31185] [2023-12-21 12:03:28,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 12:03:28,677 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 12:03:28,743 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c[31172,31185] [2023-12-21 12:03:28,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 12:03:28,759 INFO L206 MainTranslator]: Completed translation [2023-12-21 12:03:28,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28 WrapperNode [2023-12-21 12:03:28,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 12:03:28,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 12:03:28,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 12:03:28,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 12:03:28,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,828 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1003 [2023-12-21 12:03:28,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 12:03:28,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 12:03:28,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 12:03:28,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 12:03:28,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,876 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 12:03:28,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 12:03:28,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 12:03:28,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 12:03:28,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 12:03:28,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (1/1) ... [2023-12-21 12:03:28,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 12:03:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 12:03:28,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 12:03:28,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 12:03:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 12:03:28,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 12:03:28,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 12:03:28,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 12:03:29,108 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 12:03:29,110 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 12:03:29,831 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 12:03:29,932 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 12:03:29,932 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 12:03:29,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:03:29 BoogieIcfgContainer [2023-12-21 12:03:29,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 12:03:29,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 12:03:29,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 12:03:29,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 12:03:29,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:03:28" (1/3) ... [2023-12-21 12:03:29,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43891ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:03:29, skipping insertion in model container [2023-12-21 12:03:29,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:03:28" (2/3) ... [2023-12-21 12:03:29,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43891ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:03:29, skipping insertion in model container [2023-12-21 12:03:29,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:03:29" (3/3) ... [2023-12-21 12:03:29,940 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2023-12-21 12:03:29,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 12:03:29,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 12:03:30,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 12:03:30,007 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;@50fc6cdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 12:03:30,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 12:03:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 301 states have (on average 1.8372093023255813) internal successors, (553), 302 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 12:03:30,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:30,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:30,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:30,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 272906659, now seen corresponding path program 1 times [2023-12-21 12:03:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068450294] [2023-12-21 12:03:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:30,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:30,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:30,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068450294] [2023-12-21 12:03:30,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068450294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:30,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:30,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 12:03:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420429058] [2023-12-21 12:03:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:30,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 12:03:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 12:03:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 12:03:30,345 INFO L87 Difference]: Start difference. First operand has 303 states, 301 states have (on average 1.8372093023255813) internal successors, (553), 302 states have internal predecessors, (553), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:30,406 INFO L93 Difference]: Finished difference Result 411 states and 745 transitions. [2023-12-21 12:03:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 12:03:30,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 12:03:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:30,420 INFO L225 Difference]: With dead ends: 411 [2023-12-21 12:03:30,420 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 12:03:30,423 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 [2023-12-21 12:03:30,428 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:30,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 12:03:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-21 12:03:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.8266666666666667) internal successors, (548), 300 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 548 transitions. [2023-12-21 12:03:30,486 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 548 transitions. Word has length 74 [2023-12-21 12:03:30,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:30,486 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 548 transitions. [2023-12-21 12:03:30,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 548 transitions. [2023-12-21 12:03:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 12:03:30,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:30,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:30,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 12:03:30,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:30,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1532531675, now seen corresponding path program 1 times [2023-12-21 12:03:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:30,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212112092] [2023-12-21 12:03:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:30,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:30,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212112092] [2023-12-21 12:03:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212112092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:03:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060945828] [2023-12-21 12:03:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:03:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:03:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:03:30,748 INFO L87 Difference]: Start difference. First operand 301 states and 548 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:30,810 INFO L93 Difference]: Finished difference Result 411 states and 739 transitions. [2023-12-21 12:03:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:03:30,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 12:03:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:30,815 INFO L225 Difference]: With dead ends: 411 [2023-12-21 12:03:30,815 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 12:03:30,816 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 [2023-12-21 12:03:30,818 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 0 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:30,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1586 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 12:03:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-21 12:03:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.6733333333333333) internal successors, (502), 300 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 502 transitions. [2023-12-21 12:03:30,833 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 502 transitions. Word has length 74 [2023-12-21 12:03:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:30,833 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 502 transitions. [2023-12-21 12:03:30,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 502 transitions. [2023-12-21 12:03:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 12:03:30,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:30,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:30,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 12:03:30,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:30,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 232458923, now seen corresponding path program 1 times [2023-12-21 12:03:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:30,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581454228] [2023-12-21 12:03:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581454228] [2023-12-21 12:03:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581454228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:31,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123934068] [2023-12-21 12:03:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:31,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,041 INFO L87 Difference]: Start difference. First operand 301 states and 502 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:31,084 INFO L93 Difference]: Finished difference Result 503 states and 856 transitions. [2023-12-21 12:03:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-21 12:03:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:31,088 INFO L225 Difference]: With dead ends: 503 [2023-12-21 12:03:31,088 INFO L226 Difference]: Without dead ends: 396 [2023-12-21 12:03:31,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,094 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 157 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:31,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 938 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-12-21 12:03:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2023-12-21 12:03:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.683673469387755) internal successors, (660), 392 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 660 transitions. [2023-12-21 12:03:31,106 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 660 transitions. Word has length 119 [2023-12-21 12:03:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:31,107 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 660 transitions. [2023-12-21 12:03:31,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 660 transitions. [2023-12-21 12:03:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 12:03:31,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:31,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 12:03:31,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:31,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1587207086, now seen corresponding path program 1 times [2023-12-21 12:03:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:31,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834065716] [2023-12-21 12:03:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834065716] [2023-12-21 12:03:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834065716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293780007] [2023-12-21 12:03:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:31,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,206 INFO L87 Difference]: Start difference. First operand 393 states and 660 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:31,231 INFO L93 Difference]: Finished difference Result 771 states and 1316 transitions. [2023-12-21 12:03:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-21 12:03:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:31,236 INFO L225 Difference]: With dead ends: 771 [2023-12-21 12:03:31,236 INFO L226 Difference]: Without dead ends: 572 [2023-12-21 12:03:31,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,246 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 158 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:31,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 951 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-21 12:03:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2023-12-21 12:03:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 1.6984126984126984) internal successors, (963), 567 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 963 transitions. [2023-12-21 12:03:31,266 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 963 transitions. Word has length 122 [2023-12-21 12:03:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:31,267 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 963 transitions. [2023-12-21 12:03:31,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 963 transitions. [2023-12-21 12:03:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 12:03:31,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:31,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:31,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 12:03:31,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:31,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:31,269 INFO L85 PathProgramCache]: Analyzing trace with hash -11270241, now seen corresponding path program 1 times [2023-12-21 12:03:31,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:31,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661409641] [2023-12-21 12:03:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:31,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661409641] [2023-12-21 12:03:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661409641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382584181] [2023-12-21 12:03:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:31,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:31,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,442 INFO L87 Difference]: Start difference. First operand 568 states and 963 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:31,482 INFO L93 Difference]: Finished difference Result 1276 states and 2189 transitions. [2023-12-21 12:03:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:31,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2023-12-21 12:03:31,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:31,486 INFO L225 Difference]: With dead ends: 1276 [2023-12-21 12:03:31,486 INFO L226 Difference]: Without dead ends: 902 [2023-12-21 12:03:31,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,489 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 151 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:31,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 952 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-12-21 12:03:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 896. [2023-12-21 12:03:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.706145251396648) internal successors, (1527), 895 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1527 transitions. [2023-12-21 12:03:31,507 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1527 transitions. Word has length 125 [2023-12-21 12:03:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:31,508 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1527 transitions. [2023-12-21 12:03:31,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1527 transitions. [2023-12-21 12:03:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-21 12:03:31,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:31,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 12:03:31,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:31,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash -445983774, now seen corresponding path program 1 times [2023-12-21 12:03:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:31,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435800807] [2023-12-21 12:03:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435800807] [2023-12-21 12:03:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435800807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:31,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932629021] [2023-12-21 12:03:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:31,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,629 INFO L87 Difference]: Start difference. First operand 896 states and 1527 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:31,670 INFO L93 Difference]: Finished difference Result 2220 states and 3809 transitions. [2023-12-21 12:03:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:31,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-12-21 12:03:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:31,675 INFO L225 Difference]: With dead ends: 2220 [2023-12-21 12:03:31,675 INFO L226 Difference]: Without dead ends: 1518 [2023-12-21 12:03:31,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:31,677 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 144 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:31,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 953 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-12-21 12:03:31,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1508. [2023-12-21 12:03:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 1.7060384870603849) internal successors, (2571), 1507 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2571 transitions. [2023-12-21 12:03:31,723 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2571 transitions. Word has length 128 [2023-12-21 12:03:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:31,725 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2571 transitions. [2023-12-21 12:03:31,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2571 transitions. [2023-12-21 12:03:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 12:03:31,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:31,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 12:03:31,727 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:31,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1318801555, now seen corresponding path program 1 times [2023-12-21 12:03:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:31,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707085474] [2023-12-21 12:03:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:31,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:31,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707085474] [2023-12-21 12:03:31,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707085474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:31,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:03:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806184923] [2023-12-21 12:03:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:31,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:03:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:03:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:03:31,881 INFO L87 Difference]: Start difference. First operand 1508 states and 2571 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:32,138 INFO L93 Difference]: Finished difference Result 7704 states and 13323 transitions. [2023-12-21 12:03:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 12:03:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-21 12:03:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:32,159 INFO L225 Difference]: With dead ends: 7704 [2023-12-21 12:03:32,159 INFO L226 Difference]: Without dead ends: 6390 [2023-12-21 12:03:32,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 12:03:32,165 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1749 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 3465 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:03:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2023-12-21 12:03:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 2733. [2023-12-21 12:03:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2732 states have (on average 1.7104685212298683) internal successors, (4673), 2732 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4673 transitions. [2023-12-21 12:03:32,271 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4673 transitions. Word has length 131 [2023-12-21 12:03:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:32,272 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4673 transitions. [2023-12-21 12:03:32,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4673 transitions. [2023-12-21 12:03:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 12:03:32,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:32,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 12:03:32,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:32,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2135028336, now seen corresponding path program 1 times [2023-12-21 12:03:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239755424] [2023-12-21 12:03:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:32,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:32,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239755424] [2023-12-21 12:03:32,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239755424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:32,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:32,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:03:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969632874] [2023-12-21 12:03:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:32,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:03:32,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:03:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:03:32,379 INFO L87 Difference]: Start difference. First operand 2733 states and 4673 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:32,531 INFO L93 Difference]: Finished difference Result 7964 states and 13730 transitions. [2023-12-21 12:03:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:03:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-21 12:03:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:32,549 INFO L225 Difference]: With dead ends: 7964 [2023-12-21 12:03:32,550 INFO L226 Difference]: Without dead ends: 5425 [2023-12-21 12:03:32,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 12:03:32,558 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 543 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:32,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2023-12-21 12:03:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 4062. [2023-12-21 12:03:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 4061 states have (on average 1.7141098251662152) internal successors, (6961), 4061 states have internal predecessors, (6961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6961 transitions. [2023-12-21 12:03:32,680 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6961 transitions. Word has length 132 [2023-12-21 12:03:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:32,681 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 6961 transitions. [2023-12-21 12:03:32,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6961 transitions. [2023-12-21 12:03:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 12:03:32,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:32,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:32,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 12:03:32,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:32,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1824120804, now seen corresponding path program 1 times [2023-12-21 12:03:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490715604] [2023-12-21 12:03:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:32,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:32,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490715604] [2023-12-21 12:03:32,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490715604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:32,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:32,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:03:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804770637] [2023-12-21 12:03:32,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:32,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:03:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:03:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:03:32,776 INFO L87 Difference]: Start difference. First operand 4062 states and 6961 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:32,909 INFO L93 Difference]: Finished difference Result 11894 states and 20466 transitions. [2023-12-21 12:03:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:03:32,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-21 12:03:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:32,937 INFO L225 Difference]: With dead ends: 11894 [2023-12-21 12:03:32,938 INFO L226 Difference]: Without dead ends: 8026 [2023-12-21 12:03:32,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 12:03:32,948 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 541 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:32,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1607 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2023-12-21 12:03:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 6020. [2023-12-21 12:03:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 6019 states have (on average 1.7114138561222794) internal successors, (10301), 6019 states have internal predecessors, (10301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 10301 transitions. [2023-12-21 12:03:33,108 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 10301 transitions. Word has length 133 [2023-12-21 12:03:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:33,109 INFO L495 AbstractCegarLoop]: Abstraction has 6020 states and 10301 transitions. [2023-12-21 12:03:33,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 10301 transitions. [2023-12-21 12:03:33,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 12:03:33,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:33,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 12:03:33,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash -770470151, now seen corresponding path program 1 times [2023-12-21 12:03:33,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:33,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622818436] [2023-12-21 12:03:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:33,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622818436] [2023-12-21 12:03:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622818436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:03:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477957190] [2023-12-21 12:03:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:03:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:03:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:03:33,199 INFO L87 Difference]: Start difference. First operand 6020 states and 10301 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:33,394 INFO L93 Difference]: Finished difference Result 17710 states and 30410 transitions. [2023-12-21 12:03:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:03:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 12:03:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:33,421 INFO L225 Difference]: With dead ends: 17710 [2023-12-21 12:03:33,421 INFO L226 Difference]: Without dead ends: 11884 [2023-12-21 12:03:33,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 12:03:33,434 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 539 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:33,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1616 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11884 states. [2023-12-21 12:03:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11884 to 8918. [2023-12-21 12:03:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8918 states, 8917 states have (on average 1.708309969720758) internal successors, (15233), 8917 states have internal predecessors, (15233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 15233 transitions. [2023-12-21 12:03:33,661 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 15233 transitions. Word has length 134 [2023-12-21 12:03:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:33,661 INFO L495 AbstractCegarLoop]: Abstraction has 8918 states and 15233 transitions. [2023-12-21 12:03:33,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 15233 transitions. [2023-12-21 12:03:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 12:03:33,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:33,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:33,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 12:03:33,665 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1324148635, now seen corresponding path program 1 times [2023-12-21 12:03:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:33,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111960003] [2023-12-21 12:03:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:33,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111960003] [2023-12-21 12:03:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111960003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:33,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975267069] [2023-12-21 12:03:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:33,729 INFO L87 Difference]: Start difference. First operand 8918 states and 15233 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:33,878 INFO L93 Difference]: Finished difference Result 20042 states and 34224 transitions. [2023-12-21 12:03:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 12:03:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:33,907 INFO L225 Difference]: With dead ends: 20042 [2023-12-21 12:03:33,907 INFO L226 Difference]: Without dead ends: 13882 [2023-12-21 12:03:33,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:33,921 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 150 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:33,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1044 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13882 states. [2023-12-21 12:03:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13882 to 13880. [2023-12-21 12:03:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13880 states, 13879 states have (on average 1.697816845594063) internal successors, (23564), 13879 states have internal predecessors, (23564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13880 states to 13880 states and 23564 transitions. [2023-12-21 12:03:34,273 INFO L78 Accepts]: Start accepts. Automaton has 13880 states and 23564 transitions. Word has length 135 [2023-12-21 12:03:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:34,274 INFO L495 AbstractCegarLoop]: Abstraction has 13880 states and 23564 transitions. [2023-12-21 12:03:34,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13880 states and 23564 transitions. [2023-12-21 12:03:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 12:03:34,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:34,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:34,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 12:03:34,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:34,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1589484159, now seen corresponding path program 1 times [2023-12-21 12:03:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:34,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032964142] [2023-12-21 12:03:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:34,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:34,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032964142] [2023-12-21 12:03:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032964142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:34,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:34,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:34,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844274129] [2023-12-21 12:03:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:34,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:34,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:34,359 INFO L87 Difference]: Start difference. First operand 13880 states and 23564 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:34,622 INFO L93 Difference]: Finished difference Result 27586 states and 46858 transitions. [2023-12-21 12:03:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:34,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 12:03:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:34,665 INFO L225 Difference]: With dead ends: 27586 [2023-12-21 12:03:34,665 INFO L226 Difference]: Without dead ends: 19896 [2023-12-21 12:03:34,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:34,679 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 143 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:34,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1030 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19896 states. [2023-12-21 12:03:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19896 to 19894. [2023-12-21 12:03:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19894 states, 19893 states have (on average 1.6889358065651234) internal successors, (33598), 19893 states have internal predecessors, (33598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 33598 transitions. [2023-12-21 12:03:35,157 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 33598 transitions. Word has length 135 [2023-12-21 12:03:35,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:35,157 INFO L495 AbstractCegarLoop]: Abstraction has 19894 states and 33598 transitions. [2023-12-21 12:03:35,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 33598 transitions. [2023-12-21 12:03:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 12:03:35,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:35,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 12:03:35,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:35,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1833380773, now seen corresponding path program 1 times [2023-12-21 12:03:35,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746936722] [2023-12-21 12:03:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746936722] [2023-12-21 12:03:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746936722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:03:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919158757] [2023-12-21 12:03:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:35,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:03:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:35,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:03:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:03:35,273 INFO L87 Difference]: Start difference. First operand 19894 states and 33598 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:35,840 INFO L93 Difference]: Finished difference Result 63080 states and 106771 transitions. [2023-12-21 12:03:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:03:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 12:03:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:35,941 INFO L225 Difference]: With dead ends: 63080 [2023-12-21 12:03:35,942 INFO L226 Difference]: Without dead ends: 43666 [2023-12-21 12:03:35,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 12:03:35,971 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 537 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:35,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1609 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43666 states. [2023-12-21 12:03:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43666 to 31700. [2023-12-21 12:03:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31700 states, 31699 states have (on average 1.6837755134231365) internal successors, (53374), 31699 states have internal predecessors, (53374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31700 states to 31700 states and 53374 transitions. [2023-12-21 12:03:36,954 INFO L78 Accepts]: Start accepts. Automaton has 31700 states and 53374 transitions. Word has length 135 [2023-12-21 12:03:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:36,955 INFO L495 AbstractCegarLoop]: Abstraction has 31700 states and 53374 transitions. [2023-12-21 12:03:36,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 31700 states and 53374 transitions. [2023-12-21 12:03:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 12:03:36,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:36,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 12:03:36,957 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:36,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1291984129, now seen corresponding path program 1 times [2023-12-21 12:03:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368621941] [2023-12-21 12:03:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:36,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:37,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:37,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368621941] [2023-12-21 12:03:37,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368621941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:37,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:37,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:37,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894802613] [2023-12-21 12:03:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:37,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:37,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:37,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:37,018 INFO L87 Difference]: Start difference. First operand 31700 states and 53374 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:37,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:37,631 INFO L93 Difference]: Finished difference Result 70564 states and 118760 transitions. [2023-12-21 12:03:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 12:03:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:37,735 INFO L225 Difference]: With dead ends: 70564 [2023-12-21 12:03:37,735 INFO L226 Difference]: Without dead ends: 48204 [2023-12-21 12:03:37,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:37,755 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 157 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:37,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1080 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48204 states. [2023-12-21 12:03:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48204 to 48202. [2023-12-21 12:03:38,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48202 states, 48201 states have (on average 1.6715420841891246) internal successors, (80570), 48201 states have internal predecessors, (80570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48202 states to 48202 states and 80570 transitions. [2023-12-21 12:03:38,865 INFO L78 Accepts]: Start accepts. Automaton has 48202 states and 80570 transitions. Word has length 135 [2023-12-21 12:03:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:38,865 INFO L495 AbstractCegarLoop]: Abstraction has 48202 states and 80570 transitions. [2023-12-21 12:03:38,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:38,865 INFO L276 IsEmpty]: Start isEmpty. Operand 48202 states and 80570 transitions. [2023-12-21 12:03:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 12:03:38,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:38,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:38,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 12:03:38,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:38,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash 136179941, now seen corresponding path program 1 times [2023-12-21 12:03:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636449421] [2023-12-21 12:03:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:38,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636449421] [2023-12-21 12:03:38,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636449421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:38,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:38,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:03:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472694745] [2023-12-21 12:03:39,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:39,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:03:39,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:03:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:39,061 INFO L87 Difference]: Start difference. First operand 48202 states and 80570 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:39,987 INFO L93 Difference]: Finished difference Result 108381 states and 181956 transitions. [2023-12-21 12:03:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:03:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 12:03:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:40,183 INFO L225 Difference]: With dead ends: 108381 [2023-12-21 12:03:40,183 INFO L226 Difference]: Without dead ends: 73593 [2023-12-21 12:03:40,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:03:40,225 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 164 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:40,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1108 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73593 states. [2023-12-21 12:03:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73593 to 73591. [2023-12-21 12:03:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73591 states, 73590 states have (on average 1.6629025682837342) internal successors, (122373), 73590 states have internal predecessors, (122373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73591 states to 73591 states and 122373 transitions. [2023-12-21 12:03:42,029 INFO L78 Accepts]: Start accepts. Automaton has 73591 states and 122373 transitions. Word has length 135 [2023-12-21 12:03:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:42,029 INFO L495 AbstractCegarLoop]: Abstraction has 73591 states and 122373 transitions. [2023-12-21 12:03:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 73591 states and 122373 transitions. [2023-12-21 12:03:42,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 12:03:42,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:42,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:42,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 12:03:42,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:42,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash -534970547, now seen corresponding path program 1 times [2023-12-21 12:03:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983348638] [2023-12-21 12:03:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:42,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983348638] [2023-12-21 12:03:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983348638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:42,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:03:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604565071] [2023-12-21 12:03:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:03:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:03:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:03:42,430 INFO L87 Difference]: Start difference. First operand 73591 states and 122373 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:43,669 INFO L93 Difference]: Finished difference Result 146958 states and 244383 transitions. [2023-12-21 12:03:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 12:03:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 12:03:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:43,857 INFO L225 Difference]: With dead ends: 146958 [2023-12-21 12:03:43,857 INFO L226 Difference]: Without dead ends: 73593 [2023-12-21 12:03:43,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 12:03:43,924 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 149 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:43,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2348 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:03:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73593 states. [2023-12-21 12:03:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73593 to 73591. [2023-12-21 12:03:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73591 states, 73590 states have (on average 1.6544095665171898) internal successors, (121748), 73590 states have internal predecessors, (121748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73591 states to 73591 states and 121748 transitions. [2023-12-21 12:03:45,501 INFO L78 Accepts]: Start accepts. Automaton has 73591 states and 121748 transitions. Word has length 137 [2023-12-21 12:03:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:45,501 INFO L495 AbstractCegarLoop]: Abstraction has 73591 states and 121748 transitions. [2023-12-21 12:03:45,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 73591 states and 121748 transitions. [2023-12-21 12:03:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 12:03:45,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:45,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 12:03:45,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:45,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -180174314, now seen corresponding path program 1 times [2023-12-21 12:03:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539282210] [2023-12-21 12:03:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:45,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:45,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539282210] [2023-12-21 12:03:45,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539282210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:45,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:03:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359299174] [2023-12-21 12:03:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:03:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:03:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:03:45,896 INFO L87 Difference]: Start difference. First operand 73591 states and 121748 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:47,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:47,491 INFO L93 Difference]: Finished difference Result 215228 states and 356507 transitions. [2023-12-21 12:03:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 12:03:47,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2023-12-21 12:03:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:47,776 INFO L225 Difference]: With dead ends: 215228 [2023-12-21 12:03:47,777 INFO L226 Difference]: Without dead ends: 141863 [2023-12-21 12:03:47,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-21 12:03:47,834 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 147 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:47,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 2363 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:03:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141863 states. [2023-12-21 12:03:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141863 to 141861. [2023-12-21 12:03:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141861 states, 141860 states have (on average 1.6432045678838292) internal successors, (233105), 141860 states have internal predecessors, (233105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141861 states to 141861 states and 233105 transitions. [2023-12-21 12:03:50,856 INFO L78 Accepts]: Start accepts. Automaton has 141861 states and 233105 transitions. Word has length 140 [2023-12-21 12:03:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:50,856 INFO L495 AbstractCegarLoop]: Abstraction has 141861 states and 233105 transitions. [2023-12-21 12:03:50,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 141861 states and 233105 transitions. [2023-12-21 12:03:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 12:03:50,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:50,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:50,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 12:03:50,858 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:50,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1304986428, now seen corresponding path program 1 times [2023-12-21 12:03:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:50,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727163671] [2023-12-21 12:03:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 12:03:51,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:51,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727163671] [2023-12-21 12:03:51,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727163671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:51,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:51,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:03:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496623412] [2023-12-21 12:03:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:51,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:03:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:03:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:03:51,356 INFO L87 Difference]: Start difference. First operand 141861 states and 233105 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:52,573 INFO L93 Difference]: Finished difference Result 147671 states and 240850 transitions. [2023-12-21 12:03:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:03:52,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2023-12-21 12:03:52,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:03:52,882 INFO L225 Difference]: With dead ends: 147671 [2023-12-21 12:03:52,882 INFO L226 Difference]: Without dead ends: 147669 [2023-12-21 12:03:52,924 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 [2023-12-21 12:03:52,924 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:03:52,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1480 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:03:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147669 states. [2023-12-21 12:03:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147669 to 145733. [2023-12-21 12:03:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145733 states, 145732 states have (on average 1.6259297889276205) internal successors, (236950), 145732 states have internal predecessors, (236950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145733 states to 145733 states and 236950 transitions. [2023-12-21 12:03:56,091 INFO L78 Accepts]: Start accepts. Automaton has 145733 states and 236950 transitions. Word has length 141 [2023-12-21 12:03:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:03:56,091 INFO L495 AbstractCegarLoop]: Abstraction has 145733 states and 236950 transitions. [2023-12-21 12:03:56,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 145733 states and 236950 transitions. [2023-12-21 12:03:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 12:03:56,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:03:56,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:03:56,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 12:03:56,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:03:56,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:03:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash -785799495, now seen corresponding path program 1 times [2023-12-21 12:03:56,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:03:56,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489539304] [2023-12-21 12:03:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:03:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:03:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:03:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 12:03:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:03:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489539304] [2023-12-21 12:03:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489539304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:03:56,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:03:56,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:03:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216767248] [2023-12-21 12:03:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:03:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:03:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:03:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:03:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:03:56,236 INFO L87 Difference]: Start difference. First operand 145733 states and 236950 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:03:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:03:59,329 INFO L93 Difference]: Finished difference Result 400383 states and 652747 transitions. [2023-12-21 12:03:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 12:03:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-21 12:03:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:04:00,357 INFO L225 Difference]: With dead ends: 400383 [2023-12-21 12:04:00,357 INFO L226 Difference]: Without dead ends: 335731 [2023-12-21 12:04:00,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 12:04:00,462 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1174 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:04:00,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 2439 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:04:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335731 states. [2023-12-21 12:04:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335731 to 234849. [2023-12-21 12:04:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234849 states, 234848 states have (on average 1.623313802970432) internal successors, (381232), 234848 states have internal predecessors, (381232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234849 states to 234849 states and 381232 transitions. [2023-12-21 12:04:06,348 INFO L78 Accepts]: Start accepts. Automaton has 234849 states and 381232 transitions. Word has length 178 [2023-12-21 12:04:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:04:06,349 INFO L495 AbstractCegarLoop]: Abstraction has 234849 states and 381232 transitions. [2023-12-21 12:04:06,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 234849 states and 381232 transitions. [2023-12-21 12:04:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 12:04:06,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:04:06,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:04:06,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 12:04:06,353 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:04:06,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:04:06,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1051135019, now seen corresponding path program 1 times [2023-12-21 12:04:06,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:04:06,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553148852] [2023-12-21 12:04:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:04:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:04:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:04:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 12:04:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:04:06,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553148852] [2023-12-21 12:04:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553148852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:04:06,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:04:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:04:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905138859] [2023-12-21 12:04:06,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:04:06,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:04:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:04:06,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:04:06,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:04:06,487 INFO L87 Difference]: Start difference. First operand 234849 states and 381232 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:04:10,100 INFO L93 Difference]: Finished difference Result 426403 states and 695167 transitions. [2023-12-21 12:04:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 12:04:10,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 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 178 [2023-12-21 12:04:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:04:10,854 INFO L225 Difference]: With dead ends: 426403 [2023-12-21 12:04:10,855 INFO L226 Difference]: Without dead ends: 361751 [2023-12-21 12:04:10,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 12:04:10,958 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1157 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:04:10,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 2461 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:04:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361751 states. [2023-12-21 12:04:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361751 to 318423. [2023-12-21 12:04:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318423 states, 318422 states have (on average 1.6239267387303642) internal successors, (517094), 318422 states have internal predecessors, (517094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318423 states to 318423 states and 517094 transitions. [2023-12-21 12:04:17,812 INFO L78 Accepts]: Start accepts. Automaton has 318423 states and 517094 transitions. Word has length 178 [2023-12-21 12:04:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:04:17,812 INFO L495 AbstractCegarLoop]: Abstraction has 318423 states and 517094 transitions. [2023-12-21 12:04:17,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 318423 states and 517094 transitions. [2023-12-21 12:04:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 12:04:17,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:04:17,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:04:17,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 12:04:17,817 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:04:17,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:04:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1830333269, now seen corresponding path program 1 times [2023-12-21 12:04:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:04:17,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709682823] [2023-12-21 12:04:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:04:17,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:04:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:04:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 12:04:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:04:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709682823] [2023-12-21 12:04:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709682823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:04:17,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:04:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:04:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382394410] [2023-12-21 12:04:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:04:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:04:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:04:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:04:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:04:17,954 INFO L87 Difference]: Start difference. First operand 318423 states and 517094 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:04:22,347 INFO L93 Difference]: Finished difference Result 467971 states and 763099 transitions. [2023-12-21 12:04:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 12:04:22,348 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 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 178 [2023-12-21 12:04:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:04:23,327 INFO L225 Difference]: With dead ends: 467971 [2023-12-21 12:04:23,327 INFO L226 Difference]: Without dead ends: 403319 [2023-12-21 12:04:23,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 12:04:23,420 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1083 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:04:23,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 2648 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:04:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403319 states. [2023-12-21 12:04:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403319 to 369447. [2023-12-21 12:04:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369447 states, 369446 states have (on average 1.625422930550067) internal successors, (600506), 369446 states have internal predecessors, (600506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369447 states to 369447 states and 600506 transitions. [2023-12-21 12:04:31,469 INFO L78 Accepts]: Start accepts. Automaton has 369447 states and 600506 transitions. Word has length 178 [2023-12-21 12:04:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:04:31,469 INFO L495 AbstractCegarLoop]: Abstraction has 369447 states and 600506 transitions. [2023-12-21 12:04:31,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 369447 states and 600506 transitions. [2023-12-21 12:04:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 12:04:31,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:04:31,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:04:31,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 12:04:31,474 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:04:31,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:04:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash 674529081, now seen corresponding path program 1 times [2023-12-21 12:04:31,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:04:31,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578177781] [2023-12-21 12:04:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:04:31,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:04:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:04:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 12:04:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:04:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578177781] [2023-12-21 12:04:31,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578177781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:04:31,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:04:31,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 12:04:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128864623] [2023-12-21 12:04:31,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:04:31,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 12:04:31,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:04:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 12:04:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 12:04:31,599 INFO L87 Difference]: Start difference. First operand 369447 states and 600506 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:04:36,258 INFO L93 Difference]: Finished difference Result 520881 states and 850119 transitions. [2023-12-21 12:04:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 12:04:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 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 178 [2023-12-21 12:04:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:04:37,390 INFO L225 Difference]: With dead ends: 520881 [2023-12-21 12:04:37,390 INFO L226 Difference]: Without dead ends: 455079 [2023-12-21 12:04:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-21 12:04:37,520 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1077 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 12:04:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 2585 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 12:04:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455079 states. [2023-12-21 12:04:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455079 to 421207. [2023-12-21 12:04:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421207 states, 421206 states have (on average 1.627056594635404) internal successors, (685326), 421206 states have internal predecessors, (685326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421207 states to 421207 states and 685326 transitions. [2023-12-21 12:04:47,186 INFO L78 Accepts]: Start accepts. Automaton has 421207 states and 685326 transitions. Word has length 178 [2023-12-21 12:04:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:04:47,187 INFO L495 AbstractCegarLoop]: Abstraction has 421207 states and 685326 transitions. [2023-12-21 12:04:47,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 421207 states and 685326 transitions. [2023-12-21 12:04:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 12:04:47,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:04:47,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:04:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 12:04:47,191 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:04:47,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:04:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 753564844, now seen corresponding path program 1 times [2023-12-21 12:04:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:04:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284617965] [2023-12-21 12:04:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:04:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:04:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:04:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 12:04:47,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:04:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284617965] [2023-12-21 12:04:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284617965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:04:47,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:04:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 12:04:47,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491539421] [2023-12-21 12:04:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:04:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 12:04:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:04:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 12:04:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:04:47,262 INFO L87 Difference]: Start difference. First operand 421207 states and 685326 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:04:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:04:55,096 INFO L93 Difference]: Finished difference Result 900717 states and 1469955 transitions. [2023-12-21 12:04:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 12:04:55,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 179 [2023-12-21 12:04:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:04:56,822 INFO L225 Difference]: With dead ends: 900717 [2023-12-21 12:04:56,822 INFO L226 Difference]: Without dead ends: 670815 [2023-12-21 12:04:57,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 12:04:57,062 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 133 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:04:57,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 952 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:04:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670815 states. [2023-12-21 12:05:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670815 to 669544. [2023-12-21 12:05:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669544 states, 669543 states have (on average 1.628123959178126) internal successors, (1090099), 669543 states have internal predecessors, (1090099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:05:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669544 states to 669544 states and 1090099 transitions. [2023-12-21 12:05:13,274 INFO L78 Accepts]: Start accepts. Automaton has 669544 states and 1090099 transitions. Word has length 179 [2023-12-21 12:05:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 12:05:13,274 INFO L495 AbstractCegarLoop]: Abstraction has 669544 states and 1090099 transitions. [2023-12-21 12:05:13,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:05:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 669544 states and 1090099 transitions. [2023-12-21 12:05:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 12:05:13,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 12:05:13,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 12:05:13,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 12:05:13,280 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 12:05:13,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 12:05:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -632638550, now seen corresponding path program 1 times [2023-12-21 12:05:13,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 12:05:13,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390588374] [2023-12-21 12:05:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 12:05:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 12:05:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 12:05:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 12:05:13,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 12:05:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390588374] [2023-12-21 12:05:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390588374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 12:05:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 12:05:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 12:05:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849863846] [2023-12-21 12:05:13,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 12:05:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 12:05:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 12:05:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 12:05:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:05:13,397 INFO L87 Difference]: Start difference. First operand 669544 states and 1090099 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 12:05:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 12:05:23,371 INFO L93 Difference]: Finished difference Result 1126303 states and 1838416 transitions. [2023-12-21 12:05:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 12:05:23,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 179 [2023-12-21 12:05:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 12:05:26,002 INFO L225 Difference]: With dead ends: 1126303 [2023-12-21 12:05:26,003 INFO L226 Difference]: Without dead ends: 891627 [2023-12-21 12:05:26,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 12:05:26,685 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 298 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 12:05:26,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1332 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 12:05:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891627 states.