/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-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:34:55,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:34:55,652 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 03:34:55,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:34:55,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:34:55,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:34:55,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:34:55,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:34:55,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:34:55,680 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:34:55,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:34:55,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:34:55,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:34:55,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:34:55,682 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:34:55,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:34:55,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:34:55,683 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:34:55,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:34:55,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:34:55,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:34:55,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:34:55,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:34:55,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:34:55,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:34:55,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:34:55,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:34:55,685 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:34:55,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:34:55,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:34:55,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:34:55,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:34:55,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:34:55,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:34:55,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:34:55,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:34:55,688 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:34:55,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:34:55,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:34:55,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:34:55,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:34:55,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:34:55,896 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:34:55,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-20 03:34:56,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:34:57,132 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:34:57,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-20 03:34:57,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03593fa4/78ced85b798b4730b385df309a996458/FLAGeda05276e [2023-12-20 03:34:57,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03593fa4/78ced85b798b4730b385df309a996458 [2023-12-20 03:34:57,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:34:57,159 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:34:57,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:34:57,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:34:57,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:34:57,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c0d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57, skipping insertion in model container [2023-12-20 03:34:57,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:34:57,354 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-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9241,9254] [2023-12-20 03:34:57,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:34:57,402 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:34:57,444 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-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9241,9254] [2023-12-20 03:34:57,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:34:57,482 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:34:57,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57 WrapperNode [2023-12-20 03:34:57,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:34:57,483 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:34:57,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:34:57,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:34:57,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,533 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 803 [2023-12-20 03:34:57,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:34:57,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:34:57,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:34:57,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:34:57,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,560 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 03:34:57,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:34:57,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:34:57,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:34:57,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:34:57,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (1/1) ... [2023-12-20 03:34:57,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:34:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:34:57,619 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 03:34:57,640 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 03:34:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:34:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:34:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:34:57,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:34:57,771 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:34:57,772 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:34:58,315 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:34:58,349 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:34:58,349 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:34:58,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:34:58 BoogieIcfgContainer [2023-12-20 03:34:58,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:34:58,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:34:58,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:34:58,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:34:58,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:34:57" (1/3) ... [2023-12-20 03:34:58,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6400c71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:34:58, skipping insertion in model container [2023-12-20 03:34:58,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:34:57" (2/3) ... [2023-12-20 03:34:58,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6400c71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:34:58, skipping insertion in model container [2023-12-20 03:34:58,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:34:58" (3/3) ... [2023-12-20 03:34:58,356 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-12-20 03:34:58,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:34:58,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:34:58,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:34:58,410 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;@323acdcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:34:58,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:34:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 174 states have (on average 1.7701149425287357) internal successors, (308), 175 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:34:58,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 03:34:58,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:34:58,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:34:58,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:34:58,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:34:58,425 INFO L85 PathProgramCache]: Analyzing trace with hash -233591372, now seen corresponding path program 1 times [2023-12-20 03:34:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:34:58,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107756263] [2023-12-20 03:34:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:34:58,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:34:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:34:58,992 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 03:34:58,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:34:58,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107756263] [2023-12-20 03:34:58,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107756263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:34:58,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:34:58,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:34:58,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716200105] [2023-12-20 03:34:58,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:34:58,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:34:58,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:34:59,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:34:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:34:59,019 INFO L87 Difference]: Start difference. First operand has 176 states, 174 states have (on average 1.7701149425287357) internal successors, (308), 175 states have internal predecessors, (308), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:34:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:34:59,453 INFO L93 Difference]: Finished difference Result 1133 states and 1829 transitions. [2023-12-20 03:34:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 03:34:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-20 03:34:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:34:59,473 INFO L225 Difference]: With dead ends: 1133 [2023-12-20 03:34:59,473 INFO L226 Difference]: Without dead ends: 1036 [2023-12-20 03:34:59,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:34:59,482 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 2021 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2021 SdHoareTripleChecker+Valid, 3711 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:34:59,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2021 Valid, 3711 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:34:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2023-12-20 03:34:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 269. [2023-12-20 03:34:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4514925373134329) internal successors, (389), 268 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:34:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 389 transitions. [2023-12-20 03:34:59,545 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 389 transitions. Word has length 90 [2023-12-20 03:34:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:34:59,546 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 389 transitions. [2023-12-20 03:34:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:34:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 389 transitions. [2023-12-20 03:34:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:34:59,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:34:59,552 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] [2023-12-20 03:34:59,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:34:59,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:34:59,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:34:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1132626435, now seen corresponding path program 1 times [2023-12-20 03:34:59,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:34:59,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566946704] [2023-12-20 03:34:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:34:59,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:34:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:34:59,799 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 03:34:59,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:34:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566946704] [2023-12-20 03:34:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566946704] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:34:59,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:34:59,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:34:59,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349403853] [2023-12-20 03:34:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:34:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:34:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:34:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:34:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:34:59,806 INFO L87 Difference]: Start difference. First operand 269 states and 389 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:34:59,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:34:59,995 INFO L93 Difference]: Finished difference Result 1235 states and 1910 transitions. [2023-12-20 03:34:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:34:59,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:34:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:34:59,999 INFO L225 Difference]: With dead ends: 1235 [2023-12-20 03:35:00,000 INFO L226 Difference]: Without dead ends: 1095 [2023-12-20 03:35:00,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:00,003 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1351 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:00,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 2391 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2023-12-20 03:35:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 428. [2023-12-20 03:35:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5011709601873535) internal successors, (641), 427 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 641 transitions. [2023-12-20 03:35:00,020 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 641 transitions. Word has length 92 [2023-12-20 03:35:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:00,021 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 641 transitions. [2023-12-20 03:35:00,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 641 transitions. [2023-12-20 03:35:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:00,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:00,024 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] [2023-12-20 03:35:00,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:35:00,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:00,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1185794289, now seen corresponding path program 1 times [2023-12-20 03:35:00,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:00,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141099011] [2023-12-20 03:35:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:00,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:00,240 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 03:35:00,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:00,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141099011] [2023-12-20 03:35:00,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141099011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:00,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382904881] [2023-12-20 03:35:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:35:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:35:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:35:00,245 INFO L87 Difference]: Start difference. First operand 428 states and 641 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:00,403 INFO L93 Difference]: Finished difference Result 1389 states and 2154 transitions. [2023-12-20 03:35:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:35:00,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:00,408 INFO L225 Difference]: With dead ends: 1389 [2023-12-20 03:35:00,408 INFO L226 Difference]: Without dead ends: 1249 [2023-12-20 03:35:00,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:00,414 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1557 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:00,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 1991 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:00,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-20 03:35:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 651. [2023-12-20 03:35:00,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.5292307692307692) internal successors, (994), 650 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 994 transitions. [2023-12-20 03:35:00,430 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 994 transitions. Word has length 92 [2023-12-20 03:35:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:00,433 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 994 transitions. [2023-12-20 03:35:00,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 994 transitions. [2023-12-20 03:35:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:00,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:00,434 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] [2023-12-20 03:35:00,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:35:00,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:00,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1344346019, now seen corresponding path program 1 times [2023-12-20 03:35:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:00,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395251568] [2023-12-20 03:35:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:00,585 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 03:35:00,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:00,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395251568] [2023-12-20 03:35:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395251568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:00,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789518377] [2023-12-20 03:35:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:00,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:35:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:35:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:35:00,587 INFO L87 Difference]: Start difference. First operand 651 states and 994 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:00,728 INFO L93 Difference]: Finished difference Result 1538 states and 2390 transitions. [2023-12-20 03:35:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:35:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:00,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:00,732 INFO L225 Difference]: With dead ends: 1538 [2023-12-20 03:35:00,732 INFO L226 Difference]: Without dead ends: 1398 [2023-12-20 03:35:00,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:00,738 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1757 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:00,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 1932 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-12-20 03:35:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 795. [2023-12-20 03:35:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.5390428211586902) internal successors, (1222), 794 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1222 transitions. [2023-12-20 03:35:00,777 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1222 transitions. Word has length 92 [2023-12-20 03:35:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:00,778 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1222 transitions. [2023-12-20 03:35:00,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1222 transitions. [2023-12-20 03:35:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:00,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:00,780 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] [2023-12-20 03:35:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:35:00,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:00,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1002852571, now seen corresponding path program 1 times [2023-12-20 03:35:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015658252] [2023-12-20 03:35:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:00,916 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 03:35:00,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:00,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015658252] [2023-12-20 03:35:00,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015658252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:00,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:00,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291504639] [2023-12-20 03:35:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:00,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:35:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:35:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:35:00,918 INFO L87 Difference]: Start difference. First operand 795 states and 1222 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:01,043 INFO L93 Difference]: Finished difference Result 1677 states and 2610 transitions. [2023-12-20 03:35:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:35:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:01,048 INFO L225 Difference]: With dead ends: 1677 [2023-12-20 03:35:01,048 INFO L226 Difference]: Without dead ends: 1537 [2023-12-20 03:35:01,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:01,049 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1864 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:01,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 1806 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2023-12-20 03:35:01,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 934. [2023-12-20 03:35:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 1.5455519828510182) internal successors, (1442), 933 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1442 transitions. [2023-12-20 03:35:01,065 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1442 transitions. Word has length 92 [2023-12-20 03:35:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:01,065 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1442 transitions. [2023-12-20 03:35:01,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1442 transitions. [2023-12-20 03:35:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:01,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:01,066 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] [2023-12-20 03:35:01,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:35:01,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:01,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash 97640856, now seen corresponding path program 1 times [2023-12-20 03:35:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081533522] [2023-12-20 03:35:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:01,118 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 03:35:01,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081533522] [2023-12-20 03:35:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081533522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:01,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:01,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:35:01,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501172363] [2023-12-20 03:35:01,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:01,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:35:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:01,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:35:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:35:01,120 INFO L87 Difference]: Start difference. First operand 934 states and 1442 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:01,149 INFO L93 Difference]: Finished difference Result 1697 states and 2649 transitions. [2023-12-20 03:35:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:35:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:01,152 INFO L225 Difference]: With dead ends: 1697 [2023-12-20 03:35:01,152 INFO L226 Difference]: Without dead ends: 936 [2023-12-20 03:35:01,153 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 03:35:01,154 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 124 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:01,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 438 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:35:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2023-12-20 03:35:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 934. [2023-12-20 03:35:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 1.5391211146838157) internal successors, (1436), 933 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1436 transitions. [2023-12-20 03:35:01,171 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1436 transitions. Word has length 92 [2023-12-20 03:35:01,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:01,171 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1436 transitions. [2023-12-20 03:35:01,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1436 transitions. [2023-12-20 03:35:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:01,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:01,172 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] [2023-12-20 03:35:01,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:35:01,172 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:01,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash -145483495, now seen corresponding path program 1 times [2023-12-20 03:35:01,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:01,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376266583] [2023-12-20 03:35:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:01,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:01,220 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 03:35:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376266583] [2023-12-20 03:35:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376266583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:35:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307627360] [2023-12-20 03:35:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:35:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:35:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:35:01,222 INFO L87 Difference]: Start difference. First operand 934 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:01,243 INFO L93 Difference]: Finished difference Result 2385 states and 3717 transitions. [2023-12-20 03:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:35:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:01,247 INFO L225 Difference]: With dead ends: 2385 [2023-12-20 03:35:01,247 INFO L226 Difference]: Without dead ends: 1624 [2023-12-20 03:35:01,248 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 03:35:01,249 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 99 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:01,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 560 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:35:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2023-12-20 03:35:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1622. [2023-12-20 03:35:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 1.5385564466378778) internal successors, (2494), 1621 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2494 transitions. [2023-12-20 03:35:01,296 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2494 transitions. Word has length 92 [2023-12-20 03:35:01,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:01,296 INFO L495 AbstractCegarLoop]: Abstraction has 1622 states and 2494 transitions. [2023-12-20 03:35:01,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2494 transitions. [2023-12-20 03:35:01,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:01,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:01,297 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] [2023-12-20 03:35:01,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:35:01,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:01,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:01,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1672667247, now seen corresponding path program 1 times [2023-12-20 03:35:01,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:01,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294095157] [2023-12-20 03:35:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:01,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:01,427 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 03:35:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294095157] [2023-12-20 03:35:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294095157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521440850] [2023-12-20 03:35:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:35:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:35:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:35:01,429 INFO L87 Difference]: Start difference. First operand 1622 states and 2494 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:01,579 INFO L93 Difference]: Finished difference Result 3259 states and 5042 transitions. [2023-12-20 03:35:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:35:01,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:01,587 INFO L225 Difference]: With dead ends: 3259 [2023-12-20 03:35:01,587 INFO L226 Difference]: Without dead ends: 2994 [2023-12-20 03:35:01,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:01,591 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1630 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:01,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 2498 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-12-20 03:35:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1896. [2023-12-20 03:35:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 1.541424802110818) internal successors, (2921), 1895 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2921 transitions. [2023-12-20 03:35:01,629 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2921 transitions. Word has length 92 [2023-12-20 03:35:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:01,629 INFO L495 AbstractCegarLoop]: Abstraction has 1896 states and 2921 transitions. [2023-12-20 03:35:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2921 transitions. [2023-12-20 03:35:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 03:35:01,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:01,630 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] [2023-12-20 03:35:01,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:35:01,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:01,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash -853842821, now seen corresponding path program 1 times [2023-12-20 03:35:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:01,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005964813] [2023-12-20 03:35:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:01,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:01,747 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 03:35:01,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005964813] [2023-12-20 03:35:01,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005964813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:01,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:01,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:01,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321942530] [2023-12-20 03:35:01,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:01,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:35:01,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:01,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:35:01,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:35:01,750 INFO L87 Difference]: Start difference. First operand 1896 states and 2921 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:01,900 INFO L93 Difference]: Finished difference Result 3543 states and 5485 transitions. [2023-12-20 03:35:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:35:01,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-20 03:35:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:01,909 INFO L225 Difference]: With dead ends: 3543 [2023-12-20 03:35:01,909 INFO L226 Difference]: Without dead ends: 3278 [2023-12-20 03:35:01,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:01,912 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1743 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:01,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2282 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2023-12-20 03:35:01,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 2180. [2023-12-20 03:35:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.5438274437815511) internal successors, (3364), 2179 states have internal predecessors, (3364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3364 transitions. [2023-12-20 03:35:01,958 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3364 transitions. Word has length 92 [2023-12-20 03:35:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:01,959 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3364 transitions. [2023-12-20 03:35:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3364 transitions. [2023-12-20 03:35:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 03:35:01,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:01,960 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] [2023-12-20 03:35:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:35:01,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:01,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1270009986, now seen corresponding path program 1 times [2023-12-20 03:35:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:01,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092625113] [2023-12-20 03:35:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:01,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:02,064 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 03:35:02,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:02,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092625113] [2023-12-20 03:35:02,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092625113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:02,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:02,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785663715] [2023-12-20 03:35:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:02,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:02,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:02,066 INFO L87 Difference]: Start difference. First operand 2180 states and 3364 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:02,164 INFO L93 Difference]: Finished difference Result 4314 states and 6681 transitions. [2023-12-20 03:35:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:35:02,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-20 03:35:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:02,170 INFO L225 Difference]: With dead ends: 4314 [2023-12-20 03:35:02,170 INFO L226 Difference]: Without dead ends: 2180 [2023-12-20 03:35:02,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:35:02,173 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 659 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:02,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 129 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-12-20 03:35:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2023-12-20 03:35:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.5296007342817806) internal successors, (3333), 2179 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3333 transitions. [2023-12-20 03:35:02,208 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3333 transitions. Word has length 93 [2023-12-20 03:35:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:02,209 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3333 transitions. [2023-12-20 03:35:02,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3333 transitions. [2023-12-20 03:35:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 03:35:02,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:02,210 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] [2023-12-20 03:35:02,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:35:02,210 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:02,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1303267675, now seen corresponding path program 1 times [2023-12-20 03:35:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:02,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940322080] [2023-12-20 03:35:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:02,279 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 03:35:02,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:02,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940322080] [2023-12-20 03:35:02,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940322080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:02,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:02,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171041015] [2023-12-20 03:35:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:02,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:02,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:02,280 INFO L87 Difference]: Start difference. First operand 2180 states and 3333 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:02,382 INFO L93 Difference]: Finished difference Result 4298 states and 6600 transitions. [2023-12-20 03:35:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:35:02,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-20 03:35:02,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:02,388 INFO L225 Difference]: With dead ends: 4298 [2023-12-20 03:35:02,388 INFO L226 Difference]: Without dead ends: 2180 [2023-12-20 03:35:02,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:35:02,390 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 608 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:02,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 161 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-12-20 03:35:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2023-12-20 03:35:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.51537402478201) internal successors, (3302), 2179 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3302 transitions. [2023-12-20 03:35:02,421 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3302 transitions. Word has length 94 [2023-12-20 03:35:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:02,422 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3302 transitions. [2023-12-20 03:35:02,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3302 transitions. [2023-12-20 03:35:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 03:35:02,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:02,424 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] [2023-12-20 03:35:02,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:35:02,424 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:02,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 294224670, now seen corresponding path program 1 times [2023-12-20 03:35:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343086083] [2023-12-20 03:35:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:02,513 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 03:35:02,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343086083] [2023-12-20 03:35:02,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343086083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:02,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:02,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:02,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975184831] [2023-12-20 03:35:02,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:02,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:02,515 INFO L87 Difference]: Start difference. First operand 2180 states and 3302 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:02,615 INFO L93 Difference]: Finished difference Result 4306 states and 6548 transitions. [2023-12-20 03:35:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:35:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-20 03:35:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:02,622 INFO L225 Difference]: With dead ends: 4306 [2023-12-20 03:35:02,622 INFO L226 Difference]: Without dead ends: 2180 [2023-12-20 03:35:02,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:35:02,625 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 624 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:02,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 145 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-12-20 03:35:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2023-12-20 03:35:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.5011473152822397) internal successors, (3271), 2179 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3271 transitions. [2023-12-20 03:35:02,655 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3271 transitions. Word has length 95 [2023-12-20 03:35:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:02,655 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3271 transitions. [2023-12-20 03:35:02,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3271 transitions. [2023-12-20 03:35:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 03:35:02,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:02,656 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] [2023-12-20 03:35:02,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:35:02,656 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:02,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -430883397, now seen corresponding path program 1 times [2023-12-20 03:35:02,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:02,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702439745] [2023-12-20 03:35:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:02,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:02,739 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 03:35:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702439745] [2023-12-20 03:35:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702439745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:02,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194426288] [2023-12-20 03:35:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:02,741 INFO L87 Difference]: Start difference. First operand 2180 states and 3271 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:02,837 INFO L93 Difference]: Finished difference Result 4302 states and 6482 transitions. [2023-12-20 03:35:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:35:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2023-12-20 03:35:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:02,857 INFO L225 Difference]: With dead ends: 4302 [2023-12-20 03:35:02,857 INFO L226 Difference]: Without dead ends: 2180 [2023-12-20 03:35:02,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:35:02,861 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 606 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:02,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 153 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-12-20 03:35:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2023-12-20 03:35:02,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.486920605782469) internal successors, (3240), 2179 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3240 transitions. [2023-12-20 03:35:02,899 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3240 transitions. Word has length 96 [2023-12-20 03:35:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:02,899 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3240 transitions. [2023-12-20 03:35:02,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3240 transitions. [2023-12-20 03:35:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 03:35:02,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:02,901 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] [2023-12-20 03:35:02,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:35:02,901 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:02,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1502152526, now seen corresponding path program 1 times [2023-12-20 03:35:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818138309] [2023-12-20 03:35:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:02,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:03,003 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 03:35:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818138309] [2023-12-20 03:35:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818138309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802480448] [2023-12-20 03:35:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:03,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:03,005 INFO L87 Difference]: Start difference. First operand 2180 states and 3240 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:03,096 INFO L93 Difference]: Finished difference Result 4310 states and 6429 transitions. [2023-12-20 03:35:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:35:03,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-12-20 03:35:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:03,099 INFO L225 Difference]: With dead ends: 4310 [2023-12-20 03:35:03,099 INFO L226 Difference]: Without dead ends: 2180 [2023-12-20 03:35:03,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:35:03,102 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 623 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:03,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 137 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:03,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-12-20 03:35:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2023-12-20 03:35:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.4726938962826985) internal successors, (3209), 2179 states have internal predecessors, (3209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3209 transitions. [2023-12-20 03:35:03,130 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3209 transitions. Word has length 97 [2023-12-20 03:35:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:03,130 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3209 transitions. [2023-12-20 03:35:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3209 transitions. [2023-12-20 03:35:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 03:35:03,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:03,131 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] [2023-12-20 03:35:03,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:35:03,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:03,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1361975037, now seen corresponding path program 1 times [2023-12-20 03:35:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:03,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55635900] [2023-12-20 03:35:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:03,222 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 03:35:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55635900] [2023-12-20 03:35:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55635900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:03,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:03,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:03,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287240689] [2023-12-20 03:35:03,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:03,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:03,224 INFO L87 Difference]: Start difference. First operand 2180 states and 3209 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:03,318 INFO L93 Difference]: Finished difference Result 4294 states and 6351 transitions. [2023-12-20 03:35:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:35:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2023-12-20 03:35:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:03,322 INFO L225 Difference]: With dead ends: 4294 [2023-12-20 03:35:03,322 INFO L226 Difference]: Without dead ends: 2180 [2023-12-20 03:35:03,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:35:03,325 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 569 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:03,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 169 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:35:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-12-20 03:35:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2180. [2023-12-20 03:35:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2179 states have (on average 1.458467186782928) internal successors, (3178), 2179 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3178 transitions. [2023-12-20 03:35:03,351 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3178 transitions. Word has length 98 [2023-12-20 03:35:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:03,351 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3178 transitions. [2023-12-20 03:35:03,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3178 transitions. [2023-12-20 03:35:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:35:03,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:03,352 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] [2023-12-20 03:35:03,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:35:03,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:03,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -10321918, now seen corresponding path program 1 times [2023-12-20 03:35:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:03,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147261409] [2023-12-20 03:35:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:03,545 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 03:35:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147261409] [2023-12-20 03:35:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147261409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:03,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:03,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:35:03,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039733041] [2023-12-20 03:35:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:03,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:35:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:03,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:35:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:35:03,553 INFO L87 Difference]: Start difference. First operand 2180 states and 3178 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:03,588 INFO L93 Difference]: Finished difference Result 3576 states and 5228 transitions. [2023-12-20 03:35:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:35:03,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:35:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:03,594 INFO L225 Difference]: With dead ends: 3576 [2023-12-20 03:35:03,594 INFO L226 Difference]: Without dead ends: 3574 [2023-12-20 03:35:03,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:35:03,595 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 196 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:03,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 908 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:35:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2023-12-20 03:35:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2194. [2023-12-20 03:35:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.451892384860921) internal successors, (3184), 2193 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3184 transitions. [2023-12-20 03:35:03,634 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3184 transitions. Word has length 99 [2023-12-20 03:35:03,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:03,634 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3184 transitions. [2023-12-20 03:35:03,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3184 transitions. [2023-12-20 03:35:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 03:35:03,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:03,636 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] [2023-12-20 03:35:03,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:35:03,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:03,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:03,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1277361918, now seen corresponding path program 1 times [2023-12-20 03:35:03,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:03,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723234407] [2023-12-20 03:35:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:03,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:04,046 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 03:35:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:04,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723234407] [2023-12-20 03:35:04,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723234407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:04,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:04,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:35:04,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190883129] [2023-12-20 03:35:04,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:35:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:35:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:35:04,048 INFO L87 Difference]: Start difference. First operand 2194 states and 3184 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:04,581 INFO L93 Difference]: Finished difference Result 6376 states and 9274 transitions. [2023-12-20 03:35:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:35:04,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-12-20 03:35:04,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:04,588 INFO L225 Difference]: With dead ends: 6376 [2023-12-20 03:35:04,588 INFO L226 Difference]: Without dead ends: 4325 [2023-12-20 03:35:04,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-20 03:35:04,592 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1234 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:04,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 606 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:35:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2023-12-20 03:35:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 2194. [2023-12-20 03:35:04,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.449612403100775) internal successors, (3179), 2193 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3179 transitions. [2023-12-20 03:35:04,636 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3179 transitions. Word has length 99 [2023-12-20 03:35:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:04,636 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3179 transitions. [2023-12-20 03:35:04,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3179 transitions. [2023-12-20 03:35:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:35:04,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:04,637 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] [2023-12-20 03:35:04,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:35:04,638 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:04,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash 743611642, now seen corresponding path program 1 times [2023-12-20 03:35:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229516143] [2023-12-20 03:35:04,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:04,866 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 03:35:04,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229516143] [2023-12-20 03:35:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229516143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:04,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:35:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144911892] [2023-12-20 03:35:04,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:04,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:35:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:35:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:35:04,867 INFO L87 Difference]: Start difference. First operand 2194 states and 3179 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:05,173 INFO L93 Difference]: Finished difference Result 6276 states and 9141 transitions. [2023-12-20 03:35:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 03:35:05,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 03:35:05,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:05,179 INFO L225 Difference]: With dead ends: 6276 [2023-12-20 03:35:05,179 INFO L226 Difference]: Without dead ends: 4190 [2023-12-20 03:35:05,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:35:05,182 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 1340 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:05,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 387 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2023-12-20 03:35:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 2194. [2023-12-20 03:35:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.449156406748746) internal successors, (3178), 2193 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3178 transitions. [2023-12-20 03:35:05,213 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3178 transitions. Word has length 100 [2023-12-20 03:35:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:05,213 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3178 transitions. [2023-12-20 03:35:05,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3178 transitions. [2023-12-20 03:35:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 03:35:05,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:05,214 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] [2023-12-20 03:35:05,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:35:05,214 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:05,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1287863950, now seen corresponding path program 1 times [2023-12-20 03:35:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721300919] [2023-12-20 03:35:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:05,462 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 03:35:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721300919] [2023-12-20 03:35:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721300919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:05,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:05,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518910305] [2023-12-20 03:35:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:05,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:35:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:35:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:35:05,464 INFO L87 Difference]: Start difference. First operand 2194 states and 3178 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:06,038 INFO L93 Difference]: Finished difference Result 6421 states and 9332 transitions. [2023-12-20 03:35:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:35:06,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 03:35:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:06,044 INFO L225 Difference]: With dead ends: 6421 [2023-12-20 03:35:06,044 INFO L226 Difference]: Without dead ends: 4340 [2023-12-20 03:35:06,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:35:06,047 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1019 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:06,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 831 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:35:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2023-12-20 03:35:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 2194. [2023-12-20 03:35:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.4482444140446877) internal successors, (3176), 2193 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3176 transitions. [2023-12-20 03:35:06,079 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3176 transitions. Word has length 100 [2023-12-20 03:35:06,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:06,080 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3176 transitions. [2023-12-20 03:35:06,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3176 transitions. [2023-12-20 03:35:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:35:06,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:06,080 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] [2023-12-20 03:35:06,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:35:06,081 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:06,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -665094199, now seen corresponding path program 1 times [2023-12-20 03:35:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702807352] [2023-12-20 03:35:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:06,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:06,328 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 03:35:06,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702807352] [2023-12-20 03:35:06,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702807352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:06,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:06,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:06,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298322378] [2023-12-20 03:35:06,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:06,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:35:06,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:06,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:35:06,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:35:06,329 INFO L87 Difference]: Start difference. First operand 2194 states and 3176 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:06,774 INFO L93 Difference]: Finished difference Result 6406 states and 9306 transitions. [2023-12-20 03:35:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:35:06,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-20 03:35:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:06,781 INFO L225 Difference]: With dead ends: 6406 [2023-12-20 03:35:06,781 INFO L226 Difference]: Without dead ends: 4335 [2023-12-20 03:35:06,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:35:06,785 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1391 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:06,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 504 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2023-12-20 03:35:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 2194. [2023-12-20 03:35:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.446420428636571) internal successors, (3172), 2193 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3172 transitions. [2023-12-20 03:35:06,820 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3172 transitions. Word has length 101 [2023-12-20 03:35:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:06,820 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3172 transitions. [2023-12-20 03:35:06,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3172 transitions. [2023-12-20 03:35:06,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 03:35:06,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:06,821 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] [2023-12-20 03:35:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:35:06,821 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1778010692, now seen corresponding path program 1 times [2023-12-20 03:35:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:06,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494630603] [2023-12-20 03:35:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:35:07,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:07,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494630603] [2023-12-20 03:35:07,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494630603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:07,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:07,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907267137] [2023-12-20 03:35:07,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:07,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:35:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:35:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:35:07,041 INFO L87 Difference]: Start difference. First operand 2194 states and 3172 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:07,488 INFO L93 Difference]: Finished difference Result 6331 states and 9190 transitions. [2023-12-20 03:35:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:35:07,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 03:35:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:07,495 INFO L225 Difference]: With dead ends: 6331 [2023-12-20 03:35:07,495 INFO L226 Difference]: Without dead ends: 4305 [2023-12-20 03:35:07,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:35:07,499 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1337 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:07,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 498 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:07,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2023-12-20 03:35:07,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 2194. [2023-12-20 03:35:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.4436844505243958) internal successors, (3166), 2193 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3166 transitions. [2023-12-20 03:35:07,576 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3166 transitions. Word has length 102 [2023-12-20 03:35:07,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:07,576 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3166 transitions. [2023-12-20 03:35:07,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3166 transitions. [2023-12-20 03:35:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:35:07,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:07,577 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] [2023-12-20 03:35:07,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:35:07,577 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:07,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1414105549, now seen corresponding path program 1 times [2023-12-20 03:35:07,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:07,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609538447] [2023-12-20 03:35:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:07,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:07,970 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 03:35:07,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609538447] [2023-12-20 03:35:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609538447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:07,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:07,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:35:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315042843] [2023-12-20 03:35:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:07,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:35:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:35:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:35:07,971 INFO L87 Difference]: Start difference. First operand 2194 states and 3166 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:10,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:10,032 INFO L93 Difference]: Finished difference Result 37191 states and 53422 transitions. [2023-12-20 03:35:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 03:35:10,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-20 03:35:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:10,092 INFO L225 Difference]: With dead ends: 37191 [2023-12-20 03:35:10,092 INFO L226 Difference]: Without dead ends: 35195 [2023-12-20 03:35:10,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=570, Invalid=1880, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 03:35:10,107 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 5441 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:10,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5441 Valid, 1539 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 03:35:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35195 states. [2023-12-20 03:35:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35195 to 2212. [2023-12-20 03:35:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2211 states have (on average 1.4396200814111262) internal successors, (3183), 2211 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3183 transitions. [2023-12-20 03:35:10,345 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3183 transitions. Word has length 103 [2023-12-20 03:35:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:10,345 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 3183 transitions. [2023-12-20 03:35:10,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3183 transitions. [2023-12-20 03:35:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:35:10,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:10,346 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] [2023-12-20 03:35:10,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:35:10,346 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:10,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1471930391, now seen corresponding path program 1 times [2023-12-20 03:35:10,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:10,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162056148] [2023-12-20 03:35:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:10,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:10,540 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 03:35:10,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:10,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162056148] [2023-12-20 03:35:10,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162056148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:10,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:10,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 03:35:10,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223575566] [2023-12-20 03:35:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:10,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 03:35:10,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 03:35:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:35:10,543 INFO L87 Difference]: Start difference. First operand 2212 states and 3183 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:11,039 INFO L93 Difference]: Finished difference Result 6278 states and 9091 transitions. [2023-12-20 03:35:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:35:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:35:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:11,058 INFO L225 Difference]: With dead ends: 6278 [2023-12-20 03:35:11,058 INFO L226 Difference]: Without dead ends: 4283 [2023-12-20 03:35:11,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:35:11,061 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 723 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 640 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:35:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2023-12-20 03:35:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 2194. [2023-12-20 03:35:11,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.4404924760601916) internal successors, (3159), 2193 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:11,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3159 transitions. [2023-12-20 03:35:11,091 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3159 transitions. Word has length 104 [2023-12-20 03:35:11,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:11,092 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 3159 transitions. [2023-12-20 03:35:11,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3159 transitions. [2023-12-20 03:35:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:35:11,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:11,093 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] [2023-12-20 03:35:11,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 03:35:11,093 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:11,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:11,093 INFO L85 PathProgramCache]: Analyzing trace with hash 298326739, now seen corresponding path program 1 times [2023-12-20 03:35:11,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:11,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662952419] [2023-12-20 03:35:11,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:11,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:11,578 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 03:35:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:11,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662952419] [2023-12-20 03:35:11,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662952419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:11,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:11,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:35:11,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336173331] [2023-12-20 03:35:11,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:11,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:35:11,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:11,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:35:11,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:11,581 INFO L87 Difference]: Start difference. First operand 2194 states and 3159 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:12,456 INFO L93 Difference]: Finished difference Result 8938 states and 12983 transitions. [2023-12-20 03:35:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:35:12,456 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:35:12,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:12,468 INFO L225 Difference]: With dead ends: 8938 [2023-12-20 03:35:12,468 INFO L226 Difference]: Without dead ends: 8364 [2023-12-20 03:35:12,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:35:12,473 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1443 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:12,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 3097 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2023-12-20 03:35:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 2168. [2023-12-20 03:35:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 1.4402399630826026) internal successors, (3121), 2167 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3121 transitions. [2023-12-20 03:35:12,524 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3121 transitions. Word has length 104 [2023-12-20 03:35:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:12,524 INFO L495 AbstractCegarLoop]: Abstraction has 2168 states and 3121 transitions. [2023-12-20 03:35:12,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3121 transitions. [2023-12-20 03:35:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:35:12,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:12,525 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] [2023-12-20 03:35:12,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:35:12,525 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:12,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:12,526 INFO L85 PathProgramCache]: Analyzing trace with hash 322299220, now seen corresponding path program 1 times [2023-12-20 03:35:12,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:12,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684822001] [2023-12-20 03:35:12,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:12,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:14,754 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 03:35:14,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:14,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684822001] [2023-12-20 03:35:14,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684822001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:14,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:14,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2023-12-20 03:35:14,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608185126] [2023-12-20 03:35:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 03:35:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 03:35:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 03:35:14,756 INFO L87 Difference]: Start difference. First operand 2168 states and 3121 transitions. Second operand has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:24,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:24,304 INFO L93 Difference]: Finished difference Result 17574 states and 25565 transitions. [2023-12-20 03:35:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 03:35:24,305 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:35:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:24,325 INFO L225 Difference]: With dead ends: 17574 [2023-12-20 03:35:24,325 INFO L226 Difference]: Without dead ends: 17040 [2023-12-20 03:35:24,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=797, Invalid=4459, Unknown=0, NotChecked=0, Total=5256 [2023-12-20 03:35:24,329 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 2737 mSDsluCounter, 18133 mSDsCounter, 0 mSdLazyCounter, 12759 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2737 SdHoareTripleChecker+Valid, 19010 SdHoareTripleChecker+Invalid, 12762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:24,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2737 Valid, 19010 Invalid, 12762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12759 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-20 03:35:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17040 states. [2023-12-20 03:35:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17040 to 2201. [2023-12-20 03:35:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2200 states have (on average 1.4372727272727273) internal successors, (3162), 2200 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3162 transitions. [2023-12-20 03:35:24,408 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3162 transitions. Word has length 104 [2023-12-20 03:35:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:24,408 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3162 transitions. [2023-12-20 03:35:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 38 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3162 transitions. [2023-12-20 03:35:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:35:24,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:24,409 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] [2023-12-20 03:35:24,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 03:35:24,409 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:24,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1377265517, now seen corresponding path program 1 times [2023-12-20 03:35:24,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:24,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574853354] [2023-12-20 03:35:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:24,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:24,788 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 03:35:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574853354] [2023-12-20 03:35:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574853354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:24,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:24,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:35:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146869019] [2023-12-20 03:35:24,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:24,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:35:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:35:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:24,790 INFO L87 Difference]: Start difference. First operand 2201 states and 3162 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:25,578 INFO L93 Difference]: Finished difference Result 8742 states and 12703 transitions. [2023-12-20 03:35:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:35:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:35:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:25,595 INFO L225 Difference]: With dead ends: 8742 [2023-12-20 03:35:25,595 INFO L226 Difference]: Without dead ends: 8208 [2023-12-20 03:35:25,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:35:25,599 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 1248 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:25,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 2182 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8208 states. [2023-12-20 03:35:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8208 to 2198. [2023-12-20 03:35:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2197 states have (on average 1.43513882567137) internal successors, (3153), 2197 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3153 transitions. [2023-12-20 03:35:25,644 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3153 transitions. Word has length 104 [2023-12-20 03:35:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:25,645 INFO L495 AbstractCegarLoop]: Abstraction has 2198 states and 3153 transitions. [2023-12-20 03:35:25,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3153 transitions. [2023-12-20 03:35:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:35:25,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:25,645 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] [2023-12-20 03:35:25,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 03:35:25,646 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:25,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2083702260, now seen corresponding path program 1 times [2023-12-20 03:35:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:25,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431724998] [2023-12-20 03:35:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:26,056 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 03:35:26,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:26,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431724998] [2023-12-20 03:35:26,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431724998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:26,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:26,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:35:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058031729] [2023-12-20 03:35:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:35:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:35:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:26,058 INFO L87 Difference]: Start difference. First operand 2198 states and 3153 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:26,896 INFO L93 Difference]: Finished difference Result 8898 states and 12901 transitions. [2023-12-20 03:35:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:35:26,896 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:35:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:26,907 INFO L225 Difference]: With dead ends: 8898 [2023-12-20 03:35:26,907 INFO L226 Difference]: Without dead ends: 8334 [2023-12-20 03:35:26,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:35:26,910 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1394 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:26,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2904 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:26,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8334 states. [2023-12-20 03:35:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8334 to 2177. [2023-12-20 03:35:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2176 states have (on average 1.435202205882353) internal successors, (3123), 2176 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3123 transitions. [2023-12-20 03:35:26,966 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3123 transitions. Word has length 104 [2023-12-20 03:35:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:26,966 INFO L495 AbstractCegarLoop]: Abstraction has 2177 states and 3123 transitions. [2023-12-20 03:35:26,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3123 transitions. [2023-12-20 03:35:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:35:26,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:26,967 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] [2023-12-20 03:35:26,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 03:35:26,968 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:26,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1150990286, now seen corresponding path program 1 times [2023-12-20 03:35:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874618031] [2023-12-20 03:35:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:27,309 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 03:35:27,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:27,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874618031] [2023-12-20 03:35:27,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874618031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:27,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:27,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:35:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373739704] [2023-12-20 03:35:27,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:27,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:35:27,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:27,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:35:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:35:27,310 INFO L87 Difference]: Start difference. First operand 2177 states and 3123 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:28,032 INFO L93 Difference]: Finished difference Result 12713 states and 18491 transitions. [2023-12-20 03:35:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 03:35:28,032 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:35:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:28,045 INFO L225 Difference]: With dead ends: 12713 [2023-12-20 03:35:28,045 INFO L226 Difference]: Without dead ends: 12144 [2023-12-20 03:35:28,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:35:28,050 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1412 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:28,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 2222 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:28,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12144 states. [2023-12-20 03:35:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12144 to 2146. [2023-12-20 03:35:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2146 states, 2145 states have (on average 1.436829836829837) internal successors, (3082), 2145 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:28,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3082 transitions. [2023-12-20 03:35:28,115 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3082 transitions. Word has length 104 [2023-12-20 03:35:28,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:28,115 INFO L495 AbstractCegarLoop]: Abstraction has 2146 states and 3082 transitions. [2023-12-20 03:35:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:28,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3082 transitions. [2023-12-20 03:35:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 03:35:28,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:28,116 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] [2023-12-20 03:35:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 03:35:28,116 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:28,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2054759331, now seen corresponding path program 1 times [2023-12-20 03:35:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:28,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487624743] [2023-12-20 03:35:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:28,535 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 03:35:28,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:28,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487624743] [2023-12-20 03:35:28,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487624743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:28,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:28,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:35:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597054470] [2023-12-20 03:35:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:28,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:35:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:28,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:35:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:35:28,538 INFO L87 Difference]: Start difference. First operand 2146 states and 3082 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:29,272 INFO L93 Difference]: Finished difference Result 8674 states and 12606 transitions. [2023-12-20 03:35:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:35:29,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-20 03:35:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:29,281 INFO L225 Difference]: With dead ends: 8674 [2023-12-20 03:35:29,281 INFO L226 Difference]: Without dead ends: 8122 [2023-12-20 03:35:29,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:35:29,288 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1627 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:29,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 1663 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:35:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8122 states. [2023-12-20 03:35:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8122 to 2103. [2023-12-20 03:35:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 1.440057088487155) internal successors, (3027), 2102 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 3027 transitions. [2023-12-20 03:35:29,335 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 3027 transitions. Word has length 105 [2023-12-20 03:35:29,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:29,335 INFO L495 AbstractCegarLoop]: Abstraction has 2103 states and 3027 transitions. [2023-12-20 03:35:29,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 3027 transitions. [2023-12-20 03:35:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 03:35:29,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:29,336 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] [2023-12-20 03:35:29,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 03:35:29,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:29,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:29,336 INFO L85 PathProgramCache]: Analyzing trace with hash 906247966, now seen corresponding path program 1 times [2023-12-20 03:35:29,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:29,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71027029] [2023-12-20 03:35:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:31,088 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 03:35:31,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71027029] [2023-12-20 03:35:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71027029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:31,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:31,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2023-12-20 03:35:31,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936848295] [2023-12-20 03:35:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-20 03:35:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-20 03:35:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:35:31,090 INFO L87 Difference]: Start difference. First operand 2103 states and 3027 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:39,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:39,237 INFO L93 Difference]: Finished difference Result 20194 states and 29391 transitions. [2023-12-20 03:35:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 03:35:39,238 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-20 03:35:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:39,255 INFO L225 Difference]: With dead ends: 20194 [2023-12-20 03:35:39,256 INFO L226 Difference]: Without dead ends: 18203 [2023-12-20 03:35:39,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=732, Invalid=3960, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 03:35:39,263 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1939 mSDsluCounter, 17600 mSDsCounter, 0 mSdLazyCounter, 11528 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 18421 SdHoareTripleChecker+Invalid, 11532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:39,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 18421 Invalid, 11532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 11528 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-20 03:35:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18203 states. [2023-12-20 03:35:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18203 to 2132. [2023-12-20 03:35:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2131 states have (on average 1.4368840919755983) internal successors, (3062), 2131 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3062 transitions. [2023-12-20 03:35:39,348 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3062 transitions. Word has length 105 [2023-12-20 03:35:39,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:39,349 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 3062 transitions. [2023-12-20 03:35:39,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3062 transitions. [2023-12-20 03:35:39,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 03:35:39,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:39,349 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] [2023-12-20 03:35:39,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 03:35:39,349 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:39,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash 231876917, now seen corresponding path program 1 times [2023-12-20 03:35:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:39,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080610001] [2023-12-20 03:35:39,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:39,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:42,414 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 03:35:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080610001] [2023-12-20 03:35:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080610001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:42,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:42,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2023-12-20 03:35:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278385955] [2023-12-20 03:35:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:42,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 03:35:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 03:35:42,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 03:35:42,416 INFO L87 Difference]: Start difference. First operand 2132 states and 3062 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 38 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:56,390 INFO L93 Difference]: Finished difference Result 20180 states and 29398 transitions. [2023-12-20 03:35:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-20 03:35:56,391 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 38 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 03:35:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:56,409 INFO L225 Difference]: With dead ends: 20180 [2023-12-20 03:35:56,409 INFO L226 Difference]: Without dead ends: 19647 [2023-12-20 03:35:56,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1017, Invalid=6123, Unknown=0, NotChecked=0, Total=7140 [2023-12-20 03:35:56,416 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 3103 mSDsluCounter, 17196 mSDsCounter, 0 mSdLazyCounter, 12598 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 17982 SdHoareTripleChecker+Invalid, 12608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:56,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3103 Valid, 17982 Invalid, 12608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 12598 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-20 03:35:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19647 states. [2023-12-20 03:35:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19647 to 2141. [2023-12-20 03:35:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2140 states have (on average 1.435981308411215) internal successors, (3073), 2140 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3073 transitions. [2023-12-20 03:35:56,491 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3073 transitions. Word has length 106 [2023-12-20 03:35:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:56,491 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3073 transitions. [2023-12-20 03:35:56,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 38 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3073 transitions. [2023-12-20 03:35:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 03:35:56,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:56,492 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] [2023-12-20 03:35:56,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 03:35:56,492 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:56,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:56,492 INFO L85 PathProgramCache]: Analyzing trace with hash -533929552, now seen corresponding path program 1 times [2023-12-20 03:35:56,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:56,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613615003] [2023-12-20 03:35:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:56,579 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 03:35:56,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:56,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613615003] [2023-12-20 03:35:56,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613615003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:56,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:56,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:35:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449951234] [2023-12-20 03:35:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:35:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:35:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:35:56,581 INFO L87 Difference]: Start difference. First operand 2141 states and 3073 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:56,600 INFO L93 Difference]: Finished difference Result 4958 states and 7188 transitions. [2023-12-20 03:35:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:35:56,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 03:35:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:56,603 INFO L225 Difference]: With dead ends: 4958 [2023-12-20 03:35:56,603 INFO L226 Difference]: Without dead ends: 2969 [2023-12-20 03:35:56,606 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 03:35:56,606 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 104 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:56,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 601 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:35:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2023-12-20 03:35:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2023-12-20 03:35:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2966 states have (on average 1.4372892784895481) internal successors, (4263), 2966 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4263 transitions. [2023-12-20 03:35:56,632 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4263 transitions. Word has length 106 [2023-12-20 03:35:56,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:56,632 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 4263 transitions. [2023-12-20 03:35:56,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4263 transitions. [2023-12-20 03:35:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 03:35:56,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:56,633 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] [2023-12-20 03:35:56,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 03:35:56,633 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:56,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1145749050, now seen corresponding path program 1 times [2023-12-20 03:35:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:56,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043840591] [2023-12-20 03:35:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:56,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:35:57,302 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 03:35:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:35:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043840591] [2023-12-20 03:35:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043840591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:35:57,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:35:57,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-20 03:35:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265345833] [2023-12-20 03:35:57,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:35:57,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 03:35:57,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:35:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 03:35:57,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-12-20 03:35:57,304 INFO L87 Difference]: Start difference. First operand 2967 states and 4263 transitions. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 17 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:35:59,399 INFO L93 Difference]: Finished difference Result 15396 states and 22330 transitions. [2023-12-20 03:35:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 03:35:59,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 17 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 03:35:59,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:35:59,411 INFO L225 Difference]: With dead ends: 15396 [2023-12-20 03:35:59,411 INFO L226 Difference]: Without dead ends: 14603 [2023-12-20 03:35:59,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=358, Invalid=1364, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 03:35:59,416 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1713 mSDsluCounter, 5631 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 6113 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:35:59,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 6113 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:35:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2023-12-20 03:35:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 2966. [2023-12-20 03:35:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 1.436762225969646) internal successors, (4260), 2965 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4260 transitions. [2023-12-20 03:35:59,488 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4260 transitions. Word has length 106 [2023-12-20 03:35:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:35:59,488 INFO L495 AbstractCegarLoop]: Abstraction has 2966 states and 4260 transitions. [2023-12-20 03:35:59,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 17 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:35:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4260 transitions. [2023-12-20 03:35:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 03:35:59,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:35:59,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 03:35:59,489 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:35:59,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:35:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1218473657, now seen corresponding path program 1 times [2023-12-20 03:35:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:35:59,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453667733] [2023-12-20 03:35:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:35:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:35:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:00,237 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 03:36:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:00,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453667733] [2023-12-20 03:36:00,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453667733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:00,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:00,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-20 03:36:00,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131703350] [2023-12-20 03:36:00,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:00,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:36:00,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:36:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:36:00,238 INFO L87 Difference]: Start difference. First operand 2966 states and 4260 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:02,315 INFO L93 Difference]: Finished difference Result 12239 states and 17736 transitions. [2023-12-20 03:36:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 03:36:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 03:36:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:02,326 INFO L225 Difference]: With dead ends: 12239 [2023-12-20 03:36:02,326 INFO L226 Difference]: Without dead ends: 11431 [2023-12-20 03:36:02,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=373, Invalid=1349, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 03:36:02,331 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1430 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 5348 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:02,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 5348 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:36:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11431 states. [2023-12-20 03:36:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11431 to 2938. [2023-12-20 03:36:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2937 states have (on average 1.439223697650664) internal successors, (4227), 2937 states have internal predecessors, (4227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4227 transitions. [2023-12-20 03:36:02,388 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4227 transitions. Word has length 106 [2023-12-20 03:36:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:02,388 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 4227 transitions. [2023-12-20 03:36:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4227 transitions. [2023-12-20 03:36:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 03:36:02,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:02,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:02,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 03:36:02,390 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:02,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -499005645, now seen corresponding path program 1 times [2023-12-20 03:36:02,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:02,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801943069] [2023-12-20 03:36:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:02,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801943069] [2023-12-20 03:36:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801943069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:02,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:02,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:36:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805552461] [2023-12-20 03:36:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:02,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:36:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:02,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:36:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:02,468 INFO L87 Difference]: Start difference. First operand 2938 states and 4227 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:02,487 INFO L93 Difference]: Finished difference Result 6059 states and 8759 transitions. [2023-12-20 03:36:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:36:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-12-20 03:36:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:02,491 INFO L225 Difference]: With dead ends: 6059 [2023-12-20 03:36:02,491 INFO L226 Difference]: Without dead ends: 4070 [2023-12-20 03:36:02,493 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 03:36:02,494 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 98 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:02,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 468 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:36:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2023-12-20 03:36:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3944. [2023-12-20 03:36:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3944 states, 3943 states have (on average 1.4374841491250316) internal successors, (5668), 3943 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 5668 transitions. [2023-12-20 03:36:02,527 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 5668 transitions. Word has length 138 [2023-12-20 03:36:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:02,527 INFO L495 AbstractCegarLoop]: Abstraction has 3944 states and 5668 transitions. [2023-12-20 03:36:02,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 5668 transitions. [2023-12-20 03:36:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 03:36:02,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:02,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:02,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 03:36:02,529 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:02,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:02,529 INFO L85 PathProgramCache]: Analyzing trace with hash 891830988, now seen corresponding path program 1 times [2023-12-20 03:36:02,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:02,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962544174] [2023-12-20 03:36:02,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:02,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962544174] [2023-12-20 03:36:02,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962544174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:02,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:02,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:36:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548133200] [2023-12-20 03:36:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:36:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:36:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:36:02,636 INFO L87 Difference]: Start difference. First operand 3944 states and 5668 transitions. Second operand has 7 states, 7 states have (on average 20.0) 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 03:36:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:02,920 INFO L93 Difference]: Finished difference Result 14097 states and 20333 transitions. [2023-12-20 03:36:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:36:02,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:02,930 INFO L225 Difference]: With dead ends: 14097 [2023-12-20 03:36:02,930 INFO L226 Difference]: Without dead ends: 10285 [2023-12-20 03:36:02,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:36:02,936 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1836 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:02,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 469 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:36:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10285 states. [2023-12-20 03:36:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10285 to 4223. [2023-12-20 03:36:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 4222 states have (on average 1.4306016106110848) internal successors, (6040), 4222 states have internal predecessors, (6040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 6040 transitions. [2023-12-20 03:36:02,995 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 6040 transitions. Word has length 140 [2023-12-20 03:36:02,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:02,995 INFO L495 AbstractCegarLoop]: Abstraction has 4223 states and 6040 transitions. [2023-12-20 03:36:02,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 6040 transitions. [2023-12-20 03:36:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 03:36:02,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:02,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:02,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 03:36:02,996 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:02,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2013249076, now seen corresponding path program 1 times [2023-12-20 03:36:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:02,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093407662] [2023-12-20 03:36:02,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:03,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093407662] [2023-12-20 03:36:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093407662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:03,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:36:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563081403] [2023-12-20 03:36:03,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:03,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:36:03,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:36:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:36:03,087 INFO L87 Difference]: Start difference. First operand 4223 states and 6040 transitions. Second operand has 7 states, 7 states have (on average 20.0) 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 03:36:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:03,355 INFO L93 Difference]: Finished difference Result 22175 states and 31788 transitions. [2023-12-20 03:36:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:36:03,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:03,372 INFO L225 Difference]: With dead ends: 22175 [2023-12-20 03:36:03,373 INFO L226 Difference]: Without dead ends: 18093 [2023-12-20 03:36:03,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:36:03,380 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1723 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:03,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 436 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:36:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18093 states. [2023-12-20 03:36:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18093 to 8883. [2023-12-20 03:36:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8883 states, 8882 states have (on average 1.434023868498086) internal successors, (12737), 8882 states have internal predecessors, (12737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8883 states to 8883 states and 12737 transitions. [2023-12-20 03:36:03,487 INFO L78 Accepts]: Start accepts. Automaton has 8883 states and 12737 transitions. Word has length 140 [2023-12-20 03:36:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:03,487 INFO L495 AbstractCegarLoop]: Abstraction has 8883 states and 12737 transitions. [2023-12-20 03:36:03,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8883 states and 12737 transitions. [2023-12-20 03:36:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 03:36:03,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:03,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:03,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 03:36:03,488 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:03,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1940102245, now seen corresponding path program 1 times [2023-12-20 03:36:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:03,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487886683] [2023-12-20 03:36:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487886683] [2023-12-20 03:36:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487886683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:36:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490616626] [2023-12-20 03:36:03,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:03,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:36:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:36:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:36:03,585 INFO L87 Difference]: Start difference. First operand 8883 states and 12737 transitions. Second operand has 7 states, 7 states have (on average 20.0) 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 03:36:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:03,906 INFO L93 Difference]: Finished difference Result 44779 states and 63997 transitions. [2023-12-20 03:36:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:36:03,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:03,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:03,943 INFO L225 Difference]: With dead ends: 44779 [2023-12-20 03:36:03,943 INFO L226 Difference]: Without dead ends: 36037 [2023-12-20 03:36:03,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:36:03,956 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1556 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:03,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 440 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:36:03,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36037 states. [2023-12-20 03:36:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36037 to 18783. [2023-12-20 03:36:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18783 states, 18782 states have (on average 1.4345117665850282) internal successors, (26943), 18782 states have internal predecessors, (26943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18783 states to 18783 states and 26943 transitions. [2023-12-20 03:36:04,195 INFO L78 Accepts]: Start accepts. Automaton has 18783 states and 26943 transitions. Word has length 140 [2023-12-20 03:36:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:04,195 INFO L495 AbstractCegarLoop]: Abstraction has 18783 states and 26943 transitions. [2023-12-20 03:36:04,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 18783 states and 26943 transitions. [2023-12-20 03:36:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 03:36:04,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:04,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:04,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 03:36:04,196 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:04,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash -470718223, now seen corresponding path program 1 times [2023-12-20 03:36:04,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:04,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497522678] [2023-12-20 03:36:04,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497522678] [2023-12-20 03:36:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497522678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:04,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:36:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303676492] [2023-12-20 03:36:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:04,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:36:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:36:04,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:36:04,287 INFO L87 Difference]: Start difference. First operand 18783 states and 26943 transitions. Second operand has 7 states, 7 states have (on average 20.0) 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 03:36:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:04,678 INFO L93 Difference]: Finished difference Result 84919 states and 121927 transitions. [2023-12-20 03:36:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:36:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:04,759 INFO L225 Difference]: With dead ends: 84919 [2023-12-20 03:36:04,759 INFO L226 Difference]: Without dead ends: 66277 [2023-12-20 03:36:04,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:36:04,787 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1898 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:04,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 430 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:36:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66277 states. [2023-12-20 03:36:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66277 to 39743. [2023-12-20 03:36:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39743 states, 39742 states have (on average 1.4337225101907303) internal successors, (56979), 39742 states have internal predecessors, (56979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39743 states to 39743 states and 56979 transitions. [2023-12-20 03:36:05,448 INFO L78 Accepts]: Start accepts. Automaton has 39743 states and 56979 transitions. Word has length 140 [2023-12-20 03:36:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:05,448 INFO L495 AbstractCegarLoop]: Abstraction has 39743 states and 56979 transitions. [2023-12-20 03:36:05,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 39743 states and 56979 transitions. [2023-12-20 03:36:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 03:36:05,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:05,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 03:36:05,451 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:05,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1494965239, now seen corresponding path program 1 times [2023-12-20 03:36:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227687183] [2023-12-20 03:36:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:05,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227687183] [2023-12-20 03:36:05,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227687183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:05,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:05,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:36:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571377070] [2023-12-20 03:36:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 03:36:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 03:36:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:36:05,534 INFO L87 Difference]: Start difference. First operand 39743 states and 56979 transitions. Second operand has 7 states, 7 states have (on average 20.0) 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 03:36:06,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:06,187 INFO L93 Difference]: Finished difference Result 185927 states and 266895 transitions. [2023-12-20 03:36:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 03:36:06,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:06,542 INFO L225 Difference]: With dead ends: 185927 [2023-12-20 03:36:06,542 INFO L226 Difference]: Without dead ends: 146325 [2023-12-20 03:36:06,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:36:06,581 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 2070 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:06,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 425 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:36:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146325 states. [2023-12-20 03:36:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146325 to 83983. [2023-12-20 03:36:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83983 states, 83982 states have (on average 1.432437903360244) internal successors, (120299), 83982 states have internal predecessors, (120299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83983 states to 83983 states and 120299 transitions. [2023-12-20 03:36:07,839 INFO L78 Accepts]: Start accepts. Automaton has 83983 states and 120299 transitions. Word has length 140 [2023-12-20 03:36:07,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:07,839 INFO L495 AbstractCegarLoop]: Abstraction has 83983 states and 120299 transitions. [2023-12-20 03:36:07,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) 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 03:36:07,839 INFO L276 IsEmpty]: Start isEmpty. Operand 83983 states and 120299 transitions. [2023-12-20 03:36:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-20 03:36:08,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:08,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:08,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-20 03:36:08,033 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:08,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1415553437, now seen corresponding path program 1 times [2023-12-20 03:36:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:08,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208311204] [2023-12-20 03:36:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-20 03:36:08,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:08,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208311204] [2023-12-20 03:36:08,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208311204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:08,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:08,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:36:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817633234] [2023-12-20 03:36:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:08,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:36:08,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:08,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:36:08,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:08,167 INFO L87 Difference]: Start difference. First operand 83983 states and 120299 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:08,605 INFO L93 Difference]: Finished difference Result 162931 states and 232989 transitions. [2023-12-20 03:36:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:36:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 171 [2023-12-20 03:36:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:08,699 INFO L225 Difference]: With dead ends: 162931 [2023-12-20 03:36:08,699 INFO L226 Difference]: Without dead ends: 79086 [2023-12-20 03:36:08,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:08,755 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 92 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:08,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 455 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:36:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79086 states. [2023-12-20 03:36:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79086 to 77638. [2023-12-20 03:36:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77638 states, 77637 states have (on average 1.4226077772196246) internal successors, (110447), 77637 states have internal predecessors, (110447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77638 states to 77638 states and 110447 transitions. [2023-12-20 03:36:09,804 INFO L78 Accepts]: Start accepts. Automaton has 77638 states and 110447 transitions. Word has length 171 [2023-12-20 03:36:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:09,810 INFO L495 AbstractCegarLoop]: Abstraction has 77638 states and 110447 transitions. [2023-12-20 03:36:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 77638 states and 110447 transitions. [2023-12-20 03:36:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 03:36:09,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:09,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 03:36:09,850 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:09,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1922558077, now seen corresponding path program 1 times [2023-12-20 03:36:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164778577] [2023-12-20 03:36:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 03:36:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:09,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164778577] [2023-12-20 03:36:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164778577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:09,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:09,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:36:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815575946] [2023-12-20 03:36:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:09,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:36:09,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:36:09,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:09,943 INFO L87 Difference]: Start difference. First operand 77638 states and 110447 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:10,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:10,393 INFO L93 Difference]: Finished difference Result 150274 states and 213329 transitions. [2023-12-20 03:36:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:36:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 172 [2023-12-20 03:36:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:10,486 INFO L225 Difference]: With dead ends: 150274 [2023-12-20 03:36:10,486 INFO L226 Difference]: Without dead ends: 72768 [2023-12-20 03:36:10,524 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 03:36:10,526 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 85 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:10,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 456 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:36:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72768 states. [2023-12-20 03:36:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72768 to 71374. [2023-12-20 03:36:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71374 states, 71373 states have (on average 1.4109397110952322) internal successors, (100703), 71373 states have internal predecessors, (100703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71374 states to 71374 states and 100703 transitions. [2023-12-20 03:36:11,482 INFO L78 Accepts]: Start accepts. Automaton has 71374 states and 100703 transitions. Word has length 172 [2023-12-20 03:36:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:11,482 INFO L495 AbstractCegarLoop]: Abstraction has 71374 states and 100703 transitions. [2023-12-20 03:36:11,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 71374 states and 100703 transitions. [2023-12-20 03:36:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 03:36:11,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:11,505 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-12-20 03:36:11,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-20 03:36:11,506 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:11,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash 38252118, now seen corresponding path program 1 times [2023-12-20 03:36:11,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:11,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706291126] [2023-12-20 03:36:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:11,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-20 03:36:11,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706291126] [2023-12-20 03:36:11,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706291126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:11,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:11,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:36:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183111568] [2023-12-20 03:36:11,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:11,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:36:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:36:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:11,618 INFO L87 Difference]: Start difference. First operand 71374 states and 100703 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:12,103 INFO L93 Difference]: Finished difference Result 137746 states and 193841 transitions. [2023-12-20 03:36:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:36:12,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 173 [2023-12-20 03:36:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:12,186 INFO L225 Difference]: With dead ends: 137746 [2023-12-20 03:36:12,187 INFO L226 Difference]: Without dead ends: 66504 [2023-12-20 03:36:12,214 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 03:36:12,215 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 78 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:12,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 457 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:36:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66504 states. [2023-12-20 03:36:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66504 to 65110. [2023-12-20 03:36:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65110 states, 65109 states have (on average 1.3970265247508025) internal successors, (90959), 65109 states have internal predecessors, (90959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65110 states to 65110 states and 90959 transitions. [2023-12-20 03:36:13,052 INFO L78 Accepts]: Start accepts. Automaton has 65110 states and 90959 transitions. Word has length 173 [2023-12-20 03:36:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:13,053 INFO L495 AbstractCegarLoop]: Abstraction has 65110 states and 90959 transitions. [2023-12-20 03:36:13,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 65110 states and 90959 transitions. [2023-12-20 03:36:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 03:36:13,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:13,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:13,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-20 03:36:13,060 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:13,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 172753896, now seen corresponding path program 1 times [2023-12-20 03:36:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352453066] [2023-12-20 03:36:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 03:36:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352453066] [2023-12-20 03:36:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352453066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:13,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:13,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:36:13,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775999459] [2023-12-20 03:36:13,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:36:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:36:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:13,163 INFO L87 Difference]: Start difference. First operand 65110 states and 90959 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:13,395 INFO L93 Difference]: Finished difference Result 125218 states and 174353 transitions. [2023-12-20 03:36:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:36:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 174 [2023-12-20 03:36:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:13,614 INFO L225 Difference]: With dead ends: 125218 [2023-12-20 03:36:13,614 INFO L226 Difference]: Without dead ends: 60240 [2023-12-20 03:36:13,642 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 03:36:13,644 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 71 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:13,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 458 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:36:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60240 states. [2023-12-20 03:36:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60240 to 58846. [2023-12-20 03:36:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58846 states, 58845 states have (on average 1.3801512447956497) internal successors, (81215), 58845 states have internal predecessors, (81215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58846 states to 58846 states and 81215 transitions. [2023-12-20 03:36:14,380 INFO L78 Accepts]: Start accepts. Automaton has 58846 states and 81215 transitions. Word has length 174 [2023-12-20 03:36:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:14,380 INFO L495 AbstractCegarLoop]: Abstraction has 58846 states and 81215 transitions. [2023-12-20 03:36:14,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 58846 states and 81215 transitions. [2023-12-20 03:36:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:36:14,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:14,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:36:14,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-20 03:36:14,385 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:14,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:14,386 INFO L85 PathProgramCache]: Analyzing trace with hash 680181927, now seen corresponding path program 1 times [2023-12-20 03:36:14,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:14,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517420498] [2023-12-20 03:36:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:14,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:36:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517420498] [2023-12-20 03:36:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517420498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:36:14,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:36:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:36:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68262360] [2023-12-20 03:36:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:36:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:36:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:36:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:36:14,467 INFO L87 Difference]: Start difference. First operand 58846 states and 81215 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:36:14,936 INFO L93 Difference]: Finished difference Result 171170 states and 235009 transitions. [2023-12-20 03:36:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:36:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 175 [2023-12-20 03:36:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:36:15,074 INFO L225 Difference]: With dead ends: 171170 [2023-12-20 03:36:15,075 INFO L226 Difference]: Without dead ends: 112456 [2023-12-20 03:36:15,107 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 03:36:15,108 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 64 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:36:15,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 459 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:36:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112456 states. [2023-12-20 03:36:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112456 to 105958. [2023-12-20 03:36:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105958 states, 105957 states have (on average 1.3652236284530517) internal successors, (144655), 105957 states have internal predecessors, (144655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105958 states to 105958 states and 144655 transitions. [2023-12-20 03:36:16,461 INFO L78 Accepts]: Start accepts. Automaton has 105958 states and 144655 transitions. Word has length 175 [2023-12-20 03:36:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:36:16,462 INFO L495 AbstractCegarLoop]: Abstraction has 105958 states and 144655 transitions. [2023-12-20 03:36:16,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:36:16,462 INFO L276 IsEmpty]: Start isEmpty. Operand 105958 states and 144655 transitions. [2023-12-20 03:36:16,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 03:36:16,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:36:16,469 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:36:16,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-20 03:36:16,469 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:36:16,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:36:16,469 INFO L85 PathProgramCache]: Analyzing trace with hash -482617883, now seen corresponding path program 1 times [2023-12-20 03:36:16,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:36:16,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208826382] [2023-12-20 03:36:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:16,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:36:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:36:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208826382] [2023-12-20 03:36:17,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208826382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:36:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439123448] [2023-12-20 03:36:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:36:17,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:36:17,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:36:17,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:36:17,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:36:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:36:17,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 03:36:17,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:36:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:18,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:36:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:36:19,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439123448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:36:19,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:36:19,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-20 03:36:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145769318] [2023-12-20 03:36:19,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:36:19,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 03:36:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:36:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 03:36:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 03:36:19,364 INFO L87 Difference]: Start difference. First operand 105958 states and 144655 transitions. Second operand has 34 states, 34 states have (on average 13.941176470588236) internal successors, (474), 33 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:38:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:38:35,214 INFO L93 Difference]: Finished difference Result 4443414 states and 5962323 transitions. [2023-12-20 03:38:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1169 states. [2023-12-20 03:38:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 13.941176470588236) internal successors, (474), 33 states have internal predecessors, (474), 0 states have call successors, (0), 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 176 [2023-12-20 03:38:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted.