/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:29:05,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:29:05,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:29:05,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:29:05,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:29:05,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:29:05,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:29:05,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:29:05,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:29:05,937 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:29:05,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:29:05,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:29:05,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:29:05,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:29:05,939 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:29:05,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:29:05,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:29:05,940 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:29:05,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:29:05,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:29:05,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:29:05,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:29:05,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:29:05,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:29:05,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:29:05,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:29:05,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:29:05,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:29:05,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:29:05,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:29:05,945 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:29:06,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:29:06,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:29:06,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:29:06,147 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:29:06,159 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:29:06,161 INFO L431 ainManager$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 [2023-12-20 01:29:07,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:29:07,381 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:29:07,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:29:07,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef362439/4f4da09e727240e5b2eb7e70e0493067/FLAGde8489495 [2023-12-20 01:29:07,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ef362439/4f4da09e727240e5b2eb7e70e0493067 [2023-12-20 01:29:07,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:29:07,419 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:29:07,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:29:07,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:29:07,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:29:07,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f145f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07, skipping insertion in model container [2023-12-20 01:29:07,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,471 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:29:07,726 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] [2023-12-20 01:29:07,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:29:07,743 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:29:07,822 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] [2023-12-20 01:29:07,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:29:07,842 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:29:07,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07 WrapperNode [2023-12-20 01:29:07,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:29:07,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:29:07,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:29:07,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:29:07,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,914 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1003 [2023-12-20 01:29:07,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:29:07,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:29:07,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:29:07,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:29:07,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,965 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:29:07,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:29:07,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:29:07,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:29:07,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:29:07,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (1/1) ... [2023-12-20 01:29:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:29:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:29:08,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:29:08,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:29:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:29:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:29:08,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:29:08,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:29:08,168 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:29:08,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:29:08,873 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:29:08,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:29:08,927 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:29:08,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:29:08 BoogieIcfgContainer [2023-12-20 01:29:08,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:29:08,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:29:08,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:29:08,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:29:08,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:29:07" (1/3) ... [2023-12-20 01:29:08,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57083a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:29:08, skipping insertion in model container [2023-12-20 01:29:08,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:29:07" (2/3) ... [2023-12-20 01:29:08,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57083a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:29:08, skipping insertion in model container [2023-12-20 01:29:08,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:29:08" (3/3) ... [2023-12-20 01:29:08,934 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c [2023-12-20 01:29:08,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:29:08,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:29:08,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:29:09,001 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;@7cde3870, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:29:09,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:29:09,009 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) [2023-12-20 01:29:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:29:09,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:09,027 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] [2023-12-20 01:29:09,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:09,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash 272906659, now seen corresponding path program 1 times [2023-12-20 01:29:09,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:09,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688979036] [2023-12-20 01:29:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:09,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688979036] [2023-12-20 01:29:09,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688979036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:09,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:09,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:29:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506733957] [2023-12-20 01:29:09,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:29:09,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:29:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:29:09,331 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) [2023-12-20 01:29:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:09,380 INFO L93 Difference]: Finished difference Result 411 states and 745 transitions. [2023-12-20 01:29:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:29:09,384 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 [2023-12-20 01:29:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:09,392 INFO L225 Difference]: With dead ends: 411 [2023-12-20 01:29:09,392 INFO L226 Difference]: Without dead ends: 301 [2023-12-20 01:29:09,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:29:09,397 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 [2023-12-20 01:29:09,398 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] [2023-12-20 01:29:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-20 01:29:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-20 01:29:09,430 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) [2023-12-20 01:29:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 548 transitions. [2023-12-20 01:29:09,433 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 548 transitions. Word has length 74 [2023-12-20 01:29:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:09,433 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 548 transitions. [2023-12-20 01:29:09,433 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) [2023-12-20 01:29:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 548 transitions. [2023-12-20 01:29:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:29:09,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:09,435 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] [2023-12-20 01:29:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:29:09,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:09,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1532531675, now seen corresponding path program 1 times [2023-12-20 01:29:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:09,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870314924] [2023-12-20 01:29:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:09,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870314924] [2023-12-20 01:29:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870314924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:09,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:09,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:29:09,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088082084] [2023-12-20 01:29:09,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:09,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:29:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:29:09,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:09,679 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) [2023-12-20 01:29:09,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:09,766 INFO L93 Difference]: Finished difference Result 411 states and 739 transitions. [2023-12-20 01:29:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:29:09,766 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 [2023-12-20 01:29:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:09,771 INFO L225 Difference]: With dead ends: 411 [2023-12-20 01:29:09,771 INFO L226 Difference]: Without dead ends: 301 [2023-12-20 01:29:09,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:09,775 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:29:09,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1586 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:29:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-20 01:29:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-20 01:29:09,794 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) [2023-12-20 01:29:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 502 transitions. [2023-12-20 01:29:09,795 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 502 transitions. Word has length 74 [2023-12-20 01:29:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:09,795 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 502 transitions. [2023-12-20 01:29:09,795 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) [2023-12-20 01:29:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 502 transitions. [2023-12-20 01:29:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-20 01:29:09,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:09,798 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] [2023-12-20 01:29:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:29:09,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:09,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 232458923, now seen corresponding path program 1 times [2023-12-20 01:29:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444358] [2023-12-20 01:29:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444358] [2023-12-20 01:29:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:09,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814871310] [2023-12-20 01:29:09,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:09,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,002 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) [2023-12-20 01:29:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:10,039 INFO L93 Difference]: Finished difference Result 503 states and 856 transitions. [2023-12-20 01:29:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:10,040 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 [2023-12-20 01:29:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:10,043 INFO L225 Difference]: With dead ends: 503 [2023-12-20 01:29:10,043 INFO L226 Difference]: Without dead ends: 396 [2023-12-20 01:29:10,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,048 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 [2023-12-20 01:29:10,049 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] [2023-12-20 01:29:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-12-20 01:29:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2023-12-20 01:29:10,064 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) [2023-12-20 01:29:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 660 transitions. [2023-12-20 01:29:10,066 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 660 transitions. Word has length 119 [2023-12-20 01:29:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:10,068 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 660 transitions. [2023-12-20 01:29:10,068 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) [2023-12-20 01:29:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 660 transitions. [2023-12-20 01:29:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 01:29:10,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:10,071 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] [2023-12-20 01:29:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:29:10,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:10,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1587207086, now seen corresponding path program 1 times [2023-12-20 01:29:10,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:10,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291888741] [2023-12-20 01:29:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:10,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291888741] [2023-12-20 01:29:10,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291888741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:10,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:10,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905450476] [2023-12-20 01:29:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:10,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:10,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:10,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,174 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) [2023-12-20 01:29:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:10,198 INFO L93 Difference]: Finished difference Result 771 states and 1316 transitions. [2023-12-20 01:29:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:10,198 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 [2023-12-20 01:29:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:10,201 INFO L225 Difference]: With dead ends: 771 [2023-12-20 01:29:10,201 INFO L226 Difference]: Without dead ends: 572 [2023-12-20 01:29:10,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,202 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 [2023-12-20 01:29:10,202 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] [2023-12-20 01:29:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-20 01:29:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 568. [2023-12-20 01:29:10,216 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) [2023-12-20 01:29:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 963 transitions. [2023-12-20 01:29:10,217 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 963 transitions. Word has length 122 [2023-12-20 01:29:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:10,217 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 963 transitions. [2023-12-20 01:29:10,218 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) [2023-12-20 01:29:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 963 transitions. [2023-12-20 01:29:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-20 01:29:10,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:10,219 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] [2023-12-20 01:29:10,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:29:10,219 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:10,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -11270241, now seen corresponding path program 1 times [2023-12-20 01:29:10,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173636974] [2023-12-20 01:29:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173636974] [2023-12-20 01:29:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173636974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:10,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:10,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39092037] [2023-12-20 01:29:10,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:10,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:10,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:10,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:10,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,316 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) [2023-12-20 01:29:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:10,344 INFO L93 Difference]: Finished difference Result 1276 states and 2189 transitions. [2023-12-20 01:29:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:10,345 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 [2023-12-20 01:29:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:10,349 INFO L225 Difference]: With dead ends: 1276 [2023-12-20 01:29:10,349 INFO L226 Difference]: Without dead ends: 902 [2023-12-20 01:29:10,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,350 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 [2023-12-20 01:29:10,350 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] [2023-12-20 01:29:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-12-20 01:29:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 896. [2023-12-20 01:29:10,367 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) [2023-12-20 01:29:10,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1527 transitions. [2023-12-20 01:29:10,369 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1527 transitions. Word has length 125 [2023-12-20 01:29:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:10,369 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1527 transitions. [2023-12-20 01:29:10,369 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) [2023-12-20 01:29:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1527 transitions. [2023-12-20 01:29:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-20 01:29:10,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:10,371 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] [2023-12-20 01:29:10,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:29:10,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:10,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:10,372 INFO L85 PathProgramCache]: Analyzing trace with hash -445983774, now seen corresponding path program 1 times [2023-12-20 01:29:10,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:10,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651627711] [2023-12-20 01:29:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:10,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651627711] [2023-12-20 01:29:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651627711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:10,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:10,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515733144] [2023-12-20 01:29:10,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:10,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:10,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,462 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) [2023-12-20 01:29:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:10,497 INFO L93 Difference]: Finished difference Result 2220 states and 3809 transitions. [2023-12-20 01:29:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:10,497 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 [2023-12-20 01:29:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:10,502 INFO L225 Difference]: With dead ends: 2220 [2023-12-20 01:29:10,502 INFO L226 Difference]: Without dead ends: 1518 [2023-12-20 01:29:10,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:10,504 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 [2023-12-20 01:29:10,506 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] [2023-12-20 01:29:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-12-20 01:29:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1508. [2023-12-20 01:29:10,537 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) [2023-12-20 01:29:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2571 transitions. [2023-12-20 01:29:10,543 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2571 transitions. Word has length 128 [2023-12-20 01:29:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:10,544 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2571 transitions. [2023-12-20 01:29:10,544 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) [2023-12-20 01:29:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2571 transitions. [2023-12-20 01:29:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 01:29:10,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:10,546 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] [2023-12-20 01:29:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:29:10,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:10,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1318801555, now seen corresponding path program 1 times [2023-12-20 01:29:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:10,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786909730] [2023-12-20 01:29:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:10,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786909730] [2023-12-20 01:29:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786909730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:10,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:10,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:29:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141962497] [2023-12-20 01:29:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:10,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:29:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:29:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:29:10,704 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) [2023-12-20 01:29:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:10,942 INFO L93 Difference]: Finished difference Result 7704 states and 13323 transitions. [2023-12-20 01:29:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 01:29:10,942 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 [2023-12-20 01:29:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:10,962 INFO L225 Difference]: With dead ends: 7704 [2023-12-20 01:29:10,962 INFO L226 Difference]: Without dead ends: 6390 [2023-12-20 01:29:10,966 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 [2023-12-20 01:29:10,969 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 [2023-12-20 01:29:10,969 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] [2023-12-20 01:29:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2023-12-20 01:29:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 2733. [2023-12-20 01:29:11,053 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) [2023-12-20 01:29:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4673 transitions. [2023-12-20 01:29:11,059 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4673 transitions. Word has length 131 [2023-12-20 01:29:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:11,059 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4673 transitions. [2023-12-20 01:29:11,059 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) [2023-12-20 01:29:11,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4673 transitions. [2023-12-20 01:29:11,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 01:29:11,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:11,061 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] [2023-12-20 01:29:11,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:29:11,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:11,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:11,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2135028336, now seen corresponding path program 1 times [2023-12-20 01:29:11,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:11,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651770311] [2023-12-20 01:29:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:11,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:11,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651770311] [2023-12-20 01:29:11,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651770311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:29:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979914165] [2023-12-20 01:29:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:11,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:29:11,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:29:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:11,165 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) [2023-12-20 01:29:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:11,257 INFO L93 Difference]: Finished difference Result 7964 states and 13730 transitions. [2023-12-20 01:29:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:29:11,258 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 [2023-12-20 01:29:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:11,271 INFO L225 Difference]: With dead ends: 7964 [2023-12-20 01:29:11,272 INFO L226 Difference]: Without dead ends: 5425 [2023-12-20 01:29:11,274 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 [2023-12-20 01:29:11,275 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 [2023-12-20 01:29:11,275 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] [2023-12-20 01:29:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2023-12-20 01:29:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 4062. [2023-12-20 01:29:11,353 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) [2023-12-20 01:29:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 6961 transitions. [2023-12-20 01:29:11,362 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 6961 transitions. Word has length 132 [2023-12-20 01:29:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:11,362 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 6961 transitions. [2023-12-20 01:29:11,362 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) [2023-12-20 01:29:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 6961 transitions. [2023-12-20 01:29:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 01:29:11,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:11,364 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] [2023-12-20 01:29:11,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:29:11,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:11,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:11,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1824120804, now seen corresponding path program 1 times [2023-12-20 01:29:11,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:11,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791317133] [2023-12-20 01:29:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:11,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791317133] [2023-12-20 01:29:11,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791317133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:11,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:11,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:29:11,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89105649] [2023-12-20 01:29:11,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:11,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:29:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:29:11,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:11,442 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) [2023-12-20 01:29:11,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:11,587 INFO L93 Difference]: Finished difference Result 11894 states and 20466 transitions. [2023-12-20 01:29:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:29:11,587 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 [2023-12-20 01:29:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:11,610 INFO L225 Difference]: With dead ends: 11894 [2023-12-20 01:29:11,610 INFO L226 Difference]: Without dead ends: 8026 [2023-12-20 01:29:11,616 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 [2023-12-20 01:29:11,617 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 [2023-12-20 01:29:11,617 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] [2023-12-20 01:29:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2023-12-20 01:29:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 6020. [2023-12-20 01:29:11,732 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) [2023-12-20 01:29:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 10301 transitions. [2023-12-20 01:29:11,744 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 10301 transitions. Word has length 133 [2023-12-20 01:29:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:11,744 INFO L495 AbstractCegarLoop]: Abstraction has 6020 states and 10301 transitions. [2023-12-20 01:29:11,744 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) [2023-12-20 01:29:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 10301 transitions. [2023-12-20 01:29:11,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 01:29:11,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:11,746 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] [2023-12-20 01:29:11,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:29:11,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:11,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -770470151, now seen corresponding path program 1 times [2023-12-20 01:29:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14243409] [2023-12-20 01:29:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:11,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:11,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14243409] [2023-12-20 01:29:11,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14243409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:11,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:11,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:29:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999598000] [2023-12-20 01:29:11,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:11,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:29:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:11,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:29:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:11,822 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) [2023-12-20 01:29:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:11,963 INFO L93 Difference]: Finished difference Result 17710 states and 30410 transitions. [2023-12-20 01:29:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:29:11,963 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 [2023-12-20 01:29:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:11,983 INFO L225 Difference]: With dead ends: 17710 [2023-12-20 01:29:11,984 INFO L226 Difference]: Without dead ends: 11884 [2023-12-20 01:29:11,994 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 [2023-12-20 01:29:11,994 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 [2023-12-20 01:29:11,994 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] [2023-12-20 01:29:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11884 states. [2023-12-20 01:29:12,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11884 to 8918. [2023-12-20 01:29:12,240 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) [2023-12-20 01:29:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8918 states to 8918 states and 15233 transitions. [2023-12-20 01:29:12,256 INFO L78 Accepts]: Start accepts. Automaton has 8918 states and 15233 transitions. Word has length 134 [2023-12-20 01:29:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:12,257 INFO L495 AbstractCegarLoop]: Abstraction has 8918 states and 15233 transitions. [2023-12-20 01:29:12,257 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) [2023-12-20 01:29:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8918 states and 15233 transitions. [2023-12-20 01:29:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 01:29:12,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:12,260 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] [2023-12-20 01:29:12,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:29:12,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:12,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:12,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1324148635, now seen corresponding path program 1 times [2023-12-20 01:29:12,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:12,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702765956] [2023-12-20 01:29:12,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:12,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:12,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:12,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702765956] [2023-12-20 01:29:12,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702765956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:12,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:12,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:12,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885114104] [2023-12-20 01:29:12,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:12,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:12,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:12,314 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) [2023-12-20 01:29:12,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:12,440 INFO L93 Difference]: Finished difference Result 20042 states and 34224 transitions. [2023-12-20 01:29:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 01:29:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:12,464 INFO L225 Difference]: With dead ends: 20042 [2023-12-20 01:29:12,464 INFO L226 Difference]: Without dead ends: 13882 [2023-12-20 01:29:12,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:12,476 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 [2023-12-20 01:29:12,476 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] [2023-12-20 01:29:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13882 states. [2023-12-20 01:29:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13882 to 13880. [2023-12-20 01:29:12,738 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) [2023-12-20 01:29:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13880 states to 13880 states and 23564 transitions. [2023-12-20 01:29:12,766 INFO L78 Accepts]: Start accepts. Automaton has 13880 states and 23564 transitions. Word has length 135 [2023-12-20 01:29:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:12,766 INFO L495 AbstractCegarLoop]: Abstraction has 13880 states and 23564 transitions. [2023-12-20 01:29:12,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:29:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13880 states and 23564 transitions. [2023-12-20 01:29:12,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 01:29:12,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:12,814 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] [2023-12-20 01:29:12,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:29:12,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:12,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1589484159, now seen corresponding path program 1 times [2023-12-20 01:29:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:12,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939799025] [2023-12-20 01:29:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:12,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:12,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:12,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939799025] [2023-12-20 01:29:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939799025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:12,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900658489] [2023-12-20 01:29:12,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:12,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:12,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:12,871 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) [2023-12-20 01:29:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:13,047 INFO L93 Difference]: Finished difference Result 27586 states and 46858 transitions. [2023-12-20 01:29:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:13,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 01:29:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:13,079 INFO L225 Difference]: With dead ends: 27586 [2023-12-20 01:29:13,079 INFO L226 Difference]: Without dead ends: 19896 [2023-12-20 01:29:13,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:13,092 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 [2023-12-20 01:29:13,092 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] [2023-12-20 01:29:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19896 states. [2023-12-20 01:29:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19896 to 19894. [2023-12-20 01:29:13,472 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) [2023-12-20 01:29:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 33598 transitions. [2023-12-20 01:29:13,511 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 33598 transitions. Word has length 135 [2023-12-20 01:29:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:13,511 INFO L495 AbstractCegarLoop]: Abstraction has 19894 states and 33598 transitions. [2023-12-20 01:29:13,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:29:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 33598 transitions. [2023-12-20 01:29:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 01:29:13,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:13,514 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] [2023-12-20 01:29:13,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:29:13,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:13,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1833380773, now seen corresponding path program 1 times [2023-12-20 01:29:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740579505] [2023-12-20 01:29:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:13,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:13,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740579505] [2023-12-20 01:29:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740579505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:13,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:29:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106765559] [2023-12-20 01:29:13,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:29:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:29:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:13,602 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) [2023-12-20 01:29:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:14,059 INFO L93 Difference]: Finished difference Result 63080 states and 106771 transitions. [2023-12-20 01:29:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:29:14,060 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 [2023-12-20 01:29:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:14,137 INFO L225 Difference]: With dead ends: 63080 [2023-12-20 01:29:14,137 INFO L226 Difference]: Without dead ends: 43666 [2023-12-20 01:29:14,171 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 [2023-12-20 01:29:14,172 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 [2023-12-20 01:29:14,172 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] [2023-12-20 01:29:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43666 states. [2023-12-20 01:29:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43666 to 31700. [2023-12-20 01:29:15,062 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) [2023-12-20 01:29:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31700 states to 31700 states and 53374 transitions. [2023-12-20 01:29:15,114 INFO L78 Accepts]: Start accepts. Automaton has 31700 states and 53374 transitions. Word has length 135 [2023-12-20 01:29:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:15,114 INFO L495 AbstractCegarLoop]: Abstraction has 31700 states and 53374 transitions. [2023-12-20 01:29:15,114 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) [2023-12-20 01:29:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31700 states and 53374 transitions. [2023-12-20 01:29:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 01:29:15,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:15,116 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] [2023-12-20 01:29:15,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:29:15,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:15,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1291984129, now seen corresponding path program 1 times [2023-12-20 01:29:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:15,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731729411] [2023-12-20 01:29:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:15,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:15,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731729411] [2023-12-20 01:29:15,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731729411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:15,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:15,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414149443] [2023-12-20 01:29:15,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:15,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:15,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:15,327 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) [2023-12-20 01:29:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:15,775 INFO L93 Difference]: Finished difference Result 70564 states and 118760 transitions. [2023-12-20 01:29:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 01:29:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:15,868 INFO L225 Difference]: With dead ends: 70564 [2023-12-20 01:29:15,869 INFO L226 Difference]: Without dead ends: 48204 [2023-12-20 01:29:15,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:15,901 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 [2023-12-20 01:29:15,902 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] [2023-12-20 01:29:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48204 states. [2023-12-20 01:29:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48204 to 48202. [2023-12-20 01:29:16,792 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) [2023-12-20 01:29:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48202 states to 48202 states and 80570 transitions. [2023-12-20 01:29:16,914 INFO L78 Accepts]: Start accepts. Automaton has 48202 states and 80570 transitions. Word has length 135 [2023-12-20 01:29:16,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:16,914 INFO L495 AbstractCegarLoop]: Abstraction has 48202 states and 80570 transitions. [2023-12-20 01:29:16,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:29:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 48202 states and 80570 transitions. [2023-12-20 01:29:16,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 01:29:16,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:16,915 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] [2023-12-20 01:29:16,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:29:16,916 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:16,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash 136179941, now seen corresponding path program 1 times [2023-12-20 01:29:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:16,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397383915] [2023-12-20 01:29:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397383915] [2023-12-20 01:29:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397383915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:17,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:29:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458087523] [2023-12-20 01:29:17,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:17,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:29:17,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:29:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:17,068 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) [2023-12-20 01:29:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:17,843 INFO L93 Difference]: Finished difference Result 108381 states and 181956 transitions. [2023-12-20 01:29:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:29:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 01:29:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:18,016 INFO L225 Difference]: With dead ends: 108381 [2023-12-20 01:29:18,016 INFO L226 Difference]: Without dead ends: 73593 [2023-12-20 01:29:18,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:29:18,057 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 [2023-12-20 01:29:18,057 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] [2023-12-20 01:29:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73593 states. [2023-12-20 01:29:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73593 to 73591. [2023-12-20 01:29:19,522 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) [2023-12-20 01:29:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73591 states to 73591 states and 122373 transitions. [2023-12-20 01:29:19,705 INFO L78 Accepts]: Start accepts. Automaton has 73591 states and 122373 transitions. Word has length 135 [2023-12-20 01:29:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:19,705 INFO L495 AbstractCegarLoop]: Abstraction has 73591 states and 122373 transitions. [2023-12-20 01:29:19,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:29:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 73591 states and 122373 transitions. [2023-12-20 01:29:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 01:29:19,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:19,706 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] [2023-12-20 01:29:19,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:29:19,706 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:19,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -534970547, now seen corresponding path program 1 times [2023-12-20 01:29:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077888778] [2023-12-20 01:29:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077888778] [2023-12-20 01:29:19,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077888778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:19,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:19,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:29:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483292770] [2023-12-20 01:29:19,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:19,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:29:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:29:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:29:19,913 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) [2023-12-20 01:29:21,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:21,040 INFO L93 Difference]: Finished difference Result 146958 states and 244383 transitions. [2023-12-20 01:29:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:29:21,040 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 [2023-12-20 01:29:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:21,181 INFO L225 Difference]: With dead ends: 146958 [2023-12-20 01:29:21,182 INFO L226 Difference]: Without dead ends: 73593 [2023-12-20 01:29:21,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:29:21,238 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 149 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:29:21,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2348 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:29:21,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73593 states. [2023-12-20 01:29:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73593 to 73591. [2023-12-20 01:29:22,540 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) [2023-12-20 01:29:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73591 states to 73591 states and 121748 transitions. [2023-12-20 01:29:22,686 INFO L78 Accepts]: Start accepts. Automaton has 73591 states and 121748 transitions. Word has length 137 [2023-12-20 01:29:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:22,687 INFO L495 AbstractCegarLoop]: Abstraction has 73591 states and 121748 transitions. [2023-12-20 01:29:22,687 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) [2023-12-20 01:29:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 73591 states and 121748 transitions. [2023-12-20 01:29:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 01:29:22,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:22,689 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] [2023-12-20 01:29:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:29:22,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:22,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -180174314, now seen corresponding path program 1 times [2023-12-20 01:29:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857665008] [2023-12-20 01:29:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:22,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:22,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857665008] [2023-12-20 01:29:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857665008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:29:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696665929] [2023-12-20 01:29:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:22,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:29:22,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:29:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:29:22,871 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) [2023-12-20 01:29:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:24,391 INFO L93 Difference]: Finished difference Result 215228 states and 356507 transitions. [2023-12-20 01:29:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:29:24,392 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 [2023-12-20 01:29:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:24,686 INFO L225 Difference]: With dead ends: 215228 [2023-12-20 01:29:24,693 INFO L226 Difference]: Without dead ends: 141863 [2023-12-20 01:29:24,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 01:29:24,772 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:29:24,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 2363 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:29:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141863 states. [2023-12-20 01:29:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141863 to 141861. [2023-12-20 01:29:27,104 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) [2023-12-20 01:29:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141861 states to 141861 states and 233105 transitions. [2023-12-20 01:29:27,654 INFO L78 Accepts]: Start accepts. Automaton has 141861 states and 233105 transitions. Word has length 140 [2023-12-20 01:29:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:27,654 INFO L495 AbstractCegarLoop]: Abstraction has 141861 states and 233105 transitions. [2023-12-20 01:29:27,655 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) [2023-12-20 01:29:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 141861 states and 233105 transitions. [2023-12-20 01:29:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 01:29:27,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:27,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:29:27,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:29:27,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:27,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1304986428, now seen corresponding path program 1 times [2023-12-20 01:29:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947583234] [2023-12-20 01:29:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:29:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:27,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947583234] [2023-12-20 01:29:27,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947583234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:27,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:27,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:29:27,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919451523] [2023-12-20 01:29:27,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:27,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:29:27,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:29:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:27,885 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) [2023-12-20 01:29:29,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:29,238 INFO L93 Difference]: Finished difference Result 147671 states and 240850 transitions. [2023-12-20 01:29:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:29:29,239 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 [2023-12-20 01:29:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:29,525 INFO L225 Difference]: With dead ends: 147671 [2023-12-20 01:29:29,525 INFO L226 Difference]: Without dead ends: 147669 [2023-12-20 01:29:29,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:29:29,564 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 [2023-12-20 01:29:29,564 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] [2023-12-20 01:29:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147669 states. [2023-12-20 01:29:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147669 to 145733. [2023-12-20 01:29:32,029 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) [2023-12-20 01:29:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145733 states to 145733 states and 236950 transitions. [2023-12-20 01:29:32,308 INFO L78 Accepts]: Start accepts. Automaton has 145733 states and 236950 transitions. Word has length 141 [2023-12-20 01:29:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:32,308 INFO L495 AbstractCegarLoop]: Abstraction has 145733 states and 236950 transitions. [2023-12-20 01:29:32,309 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) [2023-12-20 01:29:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 145733 states and 236950 transitions. [2023-12-20 01:29:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-20 01:29:32,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:32,312 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] [2023-12-20 01:29:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:29:32,313 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:32,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash -785799495, now seen corresponding path program 1 times [2023-12-20 01:29:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:32,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357427508] [2023-12-20 01:29:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 01:29:32,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357427508] [2023-12-20 01:29:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357427508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:29:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119066186] [2023-12-20 01:29:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:32,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:29:32,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:32,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:29:32,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:29:32,439 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) [2023-12-20 01:29:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:35,452 INFO L93 Difference]: Finished difference Result 400383 states and 652747 transitions. [2023-12-20 01:29:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:29:35,453 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 [2023-12-20 01:29:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:36,128 INFO L225 Difference]: With dead ends: 400383 [2023-12-20 01:29:36,129 INFO L226 Difference]: Without dead ends: 335731 [2023-12-20 01:29:36,213 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 [2023-12-20 01:29:36,214 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1174 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-12-20 01:29:36,214 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] [2023-12-20 01:29:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335731 states. [2023-12-20 01:29:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335731 to 234849. [2023-12-20 01:29:40,730 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) [2023-12-20 01:29:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234849 states to 234849 states and 381232 transitions. [2023-12-20 01:29:41,445 INFO L78 Accepts]: Start accepts. Automaton has 234849 states and 381232 transitions. Word has length 178 [2023-12-20 01:29:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:41,445 INFO L495 AbstractCegarLoop]: Abstraction has 234849 states and 381232 transitions. [2023-12-20 01:29:41,445 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) [2023-12-20 01:29:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 234849 states and 381232 transitions. [2023-12-20 01:29:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-20 01:29:41,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:41,449 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] [2023-12-20 01:29:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 01:29:41,449 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:41,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1051135019, now seen corresponding path program 1 times [2023-12-20 01:29:41,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512048459] [2023-12-20 01:29:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 01:29:41,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:41,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512048459] [2023-12-20 01:29:41,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512048459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:41,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:41,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:29:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777609685] [2023-12-20 01:29:41,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:29:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:29:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:29:41,593 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) [2023-12-20 01:29:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:44,732 INFO L93 Difference]: Finished difference Result 426403 states and 695167 transitions. [2023-12-20 01:29:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:29:44,733 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 [2023-12-20 01:29:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:45,540 INFO L225 Difference]: With dead ends: 426403 [2023-12-20 01:29:45,540 INFO L226 Difference]: Without dead ends: 361751 [2023-12-20 01:29:45,680 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 [2023-12-20 01:29:45,682 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 [2023-12-20 01:29:45,682 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] [2023-12-20 01:29:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361751 states. [2023-12-20 01:29:51,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361751 to 318423. [2023-12-20 01:29:51,445 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) [2023-12-20 01:29:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318423 states to 318423 states and 517094 transitions. [2023-12-20 01:29:52,704 INFO L78 Accepts]: Start accepts. Automaton has 318423 states and 517094 transitions. Word has length 178 [2023-12-20 01:29:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:29:52,704 INFO L495 AbstractCegarLoop]: Abstraction has 318423 states and 517094 transitions. [2023-12-20 01:29:52,704 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) [2023-12-20 01:29:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 318423 states and 517094 transitions. [2023-12-20 01:29:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-20 01:29:52,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:29:52,707 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] [2023-12-20 01:29:52,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:29:52,708 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:29:52,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:29:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1830333269, now seen corresponding path program 1 times [2023-12-20 01:29:52,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:29:52,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931816135] [2023-12-20 01:29:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:29:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:29:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:29:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:29:53,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:29:53,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931816135] [2023-12-20 01:29:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931816135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:29:53,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:29:53,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:29:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662797758] [2023-12-20 01:29:53,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:29:53,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:29:53,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:29:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:29:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:29:53,203 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) [2023-12-20 01:29:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:29:57,111 INFO L93 Difference]: Finished difference Result 467971 states and 763099 transitions. [2023-12-20 01:29:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:29:57,112 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 [2023-12-20 01:29:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:29:57,913 INFO L225 Difference]: With dead ends: 467971 [2023-12-20 01:29:57,913 INFO L226 Difference]: Without dead ends: 403319 [2023-12-20 01:29:57,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:29:57,985 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1083 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-20 01:29:57,985 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] [2023-12-20 01:29:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403319 states. [2023-12-20 01:30:03,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403319 to 369447. [2023-12-20 01:30:04,425 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) [2023-12-20 01:30:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369447 states to 369447 states and 600506 transitions. [2023-12-20 01:30:05,959 INFO L78 Accepts]: Start accepts. Automaton has 369447 states and 600506 transitions. Word has length 178 [2023-12-20 01:30:05,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:30:05,959 INFO L495 AbstractCegarLoop]: Abstraction has 369447 states and 600506 transitions. [2023-12-20 01:30:05,959 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) [2023-12-20 01:30:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 369447 states and 600506 transitions. [2023-12-20 01:30:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-20 01:30:05,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:30:05,978 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] [2023-12-20 01:30:05,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:30:05,978 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:30:05,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:30:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash 674529081, now seen corresponding path program 1 times [2023-12-20 01:30:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:30:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139124226] [2023-12-20 01:30:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:30:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:30:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:30:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:30:06,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:30:06,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139124226] [2023-12-20 01:30:06,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139124226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:30:06,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:30:06,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:30:06,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40349773] [2023-12-20 01:30:06,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:30:06,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:30:06,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:30:06,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:30:06,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:30:06,172 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) [2023-12-20 01:30:10,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:30:10,263 INFO L93 Difference]: Finished difference Result 520881 states and 850119 transitions. [2023-12-20 01:30:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:30:10,263 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 [2023-12-20 01:30:10,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:30:11,552 INFO L225 Difference]: With dead ends: 520881 [2023-12-20 01:30:11,552 INFO L226 Difference]: Without dead ends: 455079 [2023-12-20 01:30:11,696 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 [2023-12-20 01:30:11,697 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 [2023-12-20 01:30:11,697 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] [2023-12-20 01:30:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455079 states. [2023-12-20 01:30:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455079 to 421207. [2023-12-20 01:30:18,948 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) [2023-12-20 01:30:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421207 states to 421207 states and 685326 transitions. [2023-12-20 01:30:20,431 INFO L78 Accepts]: Start accepts. Automaton has 421207 states and 685326 transitions. Word has length 178 [2023-12-20 01:30:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:30:20,431 INFO L495 AbstractCegarLoop]: Abstraction has 421207 states and 685326 transitions. [2023-12-20 01:30:20,431 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) [2023-12-20 01:30:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 421207 states and 685326 transitions. [2023-12-20 01:30:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 01:30:20,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:30:20,435 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] [2023-12-20 01:30:20,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:30:20,435 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:30:20,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:30:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 753564844, now seen corresponding path program 1 times [2023-12-20 01:30:20,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:30:20,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128532743] [2023-12-20 01:30:20,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:30:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:30:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:30:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:30:20,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:30:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128532743] [2023-12-20 01:30:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128532743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:30:20,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:30:20,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:30:20,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356051291] [2023-12-20 01:30:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:30:20,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:30:20,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:30:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:30:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:30:20,494 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) [2023-12-20 01:30:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:30:27,873 INFO L93 Difference]: Finished difference Result 900717 states and 1469955 transitions. [2023-12-20 01:30:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:30:27,873 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 [2023-12-20 01:30:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:30:29,379 INFO L225 Difference]: With dead ends: 900717 [2023-12-20 01:30:29,380 INFO L226 Difference]: Without dead ends: 670815 [2023-12-20 01:30:29,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:30:29,589 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:30:29,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 952 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:30:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670815 states. [2023-12-20 01:30:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670815 to 669544. [2023-12-20 01:30:41,900 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) [2023-12-20 01:30:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669544 states to 669544 states and 1090099 transitions. [2023-12-20 01:30:45,143 INFO L78 Accepts]: Start accepts. Automaton has 669544 states and 1090099 transitions. Word has length 179 [2023-12-20 01:30:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:30:45,144 INFO L495 AbstractCegarLoop]: Abstraction has 669544 states and 1090099 transitions. [2023-12-20 01:30:45,144 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) [2023-12-20 01:30:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 669544 states and 1090099 transitions. [2023-12-20 01:30:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 01:30:45,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:30:45,148 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] [2023-12-20 01:30:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:30:45,149 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:30:45,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:30:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash -632638550, now seen corresponding path program 1 times [2023-12-20 01:30:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:30:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097587781] [2023-12-20 01:30:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:30:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:30:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:30:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:30:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:30:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097587781] [2023-12-20 01:30:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097587781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:30:45,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:30:45,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:30:45,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049163712] [2023-12-20 01:30:45,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:30:45,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:30:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:30:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:30:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:30:45,302 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) [2023-12-20 01:30:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:30:55,109 INFO L93 Difference]: Finished difference Result 1126303 states and 1838416 transitions. [2023-12-20 01:30:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:30:55,109 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 [2023-12-20 01:30:55,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:30:58,613 INFO L225 Difference]: With dead ends: 1126303 [2023-12-20 01:30:58,613 INFO L226 Difference]: Without dead ends: 891627 [2023-12-20 01:30:58,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:30:58,833 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 [2023-12-20 01:30:58,833 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] [2023-12-20 01:30:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891627 states. [2023-12-20 01:31:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891627 to 844596. [2023-12-20 01:31:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844596 states, 844595 states have (on average 1.6263842433355633) internal successors, (1373636), 844595 states have internal predecessors, (1373636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:31:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844596 states to 844596 states and 1373636 transitions. [2023-12-20 01:31:18,394 INFO L78 Accepts]: Start accepts. Automaton has 844596 states and 1373636 transitions. Word has length 179 [2023-12-20 01:31:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:31:18,395 INFO L495 AbstractCegarLoop]: Abstraction has 844596 states and 1373636 transitions. [2023-12-20 01:31:18,395 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-20 01:31:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 844596 states and 1373636 transitions. [2023-12-20 01:31:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 01:31:18,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:31:18,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:31:18,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:31:18,401 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:31:18,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:31:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash 131584606, now seen corresponding path program 1 times [2023-12-20 01:31:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:31:18,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763993456] [2023-12-20 01:31:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:31:18,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:31:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:31:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 01:31:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:31:18,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763993456] [2023-12-20 01:31:18,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763993456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:31:18,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:31:18,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:31:18,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456886874] [2023-12-20 01:31:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:31:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:31:18,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:31:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:31:18,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:31:18,586 INFO L87 Difference]: Start difference. First operand 844596 states and 1373636 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)