/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:14:19,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:14:19,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:14:19,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:14:19,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:14:19,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:14:19,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:14:19,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:14:19,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:14:19,626 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:14:19,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:14:19,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:14:19,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:14:19,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:14:19,628 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:14:19,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:14:19,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:14:19,629 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:14:19,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:14:19,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:14:19,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:14:19,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:14:19,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:14:19,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:14:19,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:14:19,630 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:14:19,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:14:19,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:14:19,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:14:19,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:14:19,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:14:19,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:14:19,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:14:19,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:14:19,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:14:19,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:14:19,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:14:19,634 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:14:19,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:14:19,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:14:19,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:14:19,842 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:14:19,842 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:14:19,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-16 06:14:21,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:14:21,242 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:14:21,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-16 06:14:21,251 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61a1a1558/afb8b8bb83a54de6b8205de529ea570a/FLAG3a3949410 [2023-12-16 06:14:21,262 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61a1a1558/afb8b8bb83a54de6b8205de529ea570a [2023-12-16 06:14:21,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:14:21,271 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:14:21,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:14:21,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:14:21,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:14:21,278 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a71b7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21, skipping insertion in model container [2023-12-16 06:14:21,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:14:21,463 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_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-16 06:14:21,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:14:21,504 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:14:21,535 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_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-12-16 06:14:21,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:14:21,564 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:14:21,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21 WrapperNode [2023-12-16 06:14:21,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:14:21,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:14:21,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:14:21,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:14:21,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,618 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2023-12-16 06:14:21,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:14:21,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:14:21,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:14:21,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:14:21,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,658 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]. [2023-12-16 06:14:21,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:14:21,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:14:21,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:14:21,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:14:21,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (1/1) ... [2023-12-16 06:14:21,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:14:21,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:14:21,724 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) [2023-12-16 06:14:21,786 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 [2023-12-16 06:14:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:14:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:14:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:14:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:14:21,888 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:14:21,890 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:14:22,326 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:14:22,349 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:14:22,350 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-16 06:14:22,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:14:22 BoogieIcfgContainer [2023-12-16 06:14:22,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:14:22,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:14:22,351 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:14:22,354 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:14:22,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:14:21" (1/3) ... [2023-12-16 06:14:22,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a403524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:14:22, skipping insertion in model container [2023-12-16 06:14:22,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:14:21" (2/3) ... [2023-12-16 06:14:22,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a403524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:14:22, skipping insertion in model container [2023-12-16 06:14:22,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:14:22" (3/3) ... [2023-12-16 06:14:22,355 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-16 06:14:22,367 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:14:22,367 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:14:22,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:14:22,407 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;@52c01df3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:14:22,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:14:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 06:14:22,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:22,422 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] [2023-12-16 06:14:22,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:22,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash -257930743, now seen corresponding path program 1 times [2023-12-16 06:14:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908406852] [2023-12-16 06:14:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908406852] [2023-12-16 06:14:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908406852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:22,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:22,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:22,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877328263] [2023-12-16 06:14:22,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:22,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:22,804 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 0 states have call successors, (0), 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 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:22,883 INFO L93 Difference]: Finished difference Result 284 states and 487 transitions. [2023-12-16 06:14:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:22,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-16 06:14:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:22,894 INFO L225 Difference]: With dead ends: 284 [2023-12-16 06:14:22,894 INFO L226 Difference]: Without dead ends: 200 [2023-12-16 06:14:22,897 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 [2023-12-16 06:14:22,899 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:22,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-16 06:14:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-12-16 06:14:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.583756345177665) internal successors, (312), 197 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 312 transitions. [2023-12-16 06:14:22,936 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 312 transitions. Word has length 56 [2023-12-16 06:14:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:22,937 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 312 transitions. [2023-12-16 06:14:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 312 transitions. [2023-12-16 06:14:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 06:14:22,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:22,939 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] [2023-12-16 06:14:22,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:14:22,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:22,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:22,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1691975926, now seen corresponding path program 1 times [2023-12-16 06:14:22,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:22,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211263776] [2023-12-16 06:14:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:22,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:23,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211263776] [2023-12-16 06:14:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211263776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:23,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:23,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017962514] [2023-12-16 06:14:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:23,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:23,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:23,035 INFO L87 Difference]: Start difference. First operand 198 states and 312 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:23,057 INFO L93 Difference]: Finished difference Result 474 states and 768 transitions. [2023-12-16 06:14:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:23,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 06:14:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:23,059 INFO L225 Difference]: With dead ends: 474 [2023-12-16 06:14:23,059 INFO L226 Difference]: Without dead ends: 329 [2023-12-16 06:14:23,059 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 [2023-12-16 06:14:23,060 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:23,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 440 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-16 06:14:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2023-12-16 06:14:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.607361963190184) internal successors, (524), 326 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 524 transitions. [2023-12-16 06:14:23,074 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 524 transitions. Word has length 58 [2023-12-16 06:14:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:23,074 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 524 transitions. [2023-12-16 06:14:23,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 524 transitions. [2023-12-16 06:14:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:14:23,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:23,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:23,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:14:23,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:23,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash -62203140, now seen corresponding path program 1 times [2023-12-16 06:14:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957596907] [2023-12-16 06:14:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:23,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:23,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957596907] [2023-12-16 06:14:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957596907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:23,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:23,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977395402] [2023-12-16 06:14:23,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:23,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:23,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:23,172 INFO L87 Difference]: Start difference. First operand 327 states and 524 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:23,192 INFO L93 Difference]: Finished difference Result 602 states and 980 transitions. [2023-12-16 06:14:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 06:14:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:23,196 INFO L225 Difference]: With dead ends: 602 [2023-12-16 06:14:23,196 INFO L226 Difference]: Without dead ends: 457 [2023-12-16 06:14:23,198 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 [2023-12-16 06:14:23,200 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:23,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 442 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-16 06:14:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2023-12-16 06:14:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.6167400881057268) internal successors, (734), 454 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 734 transitions. [2023-12-16 06:14:23,227 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 734 transitions. Word has length 60 [2023-12-16 06:14:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 734 transitions. [2023-12-16 06:14:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 734 transitions. [2023-12-16 06:14:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 06:14:23,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:23,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:23,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:14:23,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1225726807, now seen corresponding path program 1 times [2023-12-16 06:14:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445023604] [2023-12-16 06:14:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:23,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445023604] [2023-12-16 06:14:23,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445023604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:23,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:23,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:23,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069663186] [2023-12-16 06:14:23,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:23,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:23,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:23,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:23,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:23,345 INFO L87 Difference]: Start difference. First operand 455 states and 734 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:23,362 INFO L93 Difference]: Finished difference Result 1171 states and 1910 transitions. [2023-12-16 06:14:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:23,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-16 06:14:23,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:23,365 INFO L225 Difference]: With dead ends: 1171 [2023-12-16 06:14:23,366 INFO L226 Difference]: Without dead ends: 792 [2023-12-16 06:14:23,369 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 [2023-12-16 06:14:23,371 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:23,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-12-16 06:14:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 790. [2023-12-16 06:14:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.6172370088719898) internal successors, (1276), 789 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1276 transitions. [2023-12-16 06:14:23,388 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1276 transitions. Word has length 60 [2023-12-16 06:14:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:23,389 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1276 transitions. [2023-12-16 06:14:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1276 transitions. [2023-12-16 06:14:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 06:14:23,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:23,391 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] [2023-12-16 06:14:23,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:14:23,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:23,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash -792993450, now seen corresponding path program 1 times [2023-12-16 06:14:23,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:23,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636349477] [2023-12-16 06:14:23,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:23,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:23,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636349477] [2023-12-16 06:14:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636349477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:23,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:23,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693519072] [2023-12-16 06:14:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:23,502 INFO L87 Difference]: Start difference. First operand 790 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:23,623 INFO L93 Difference]: Finished difference Result 3567 states and 5887 transitions. [2023-12-16 06:14:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 06:14:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 06:14:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:23,633 INFO L225 Difference]: With dead ends: 3567 [2023-12-16 06:14:23,633 INFO L226 Difference]: Without dead ends: 2853 [2023-12-16 06:14:23,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:14:23,635 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 881 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:23,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:14:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2023-12-16 06:14:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1431. [2023-12-16 06:14:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 1.6237762237762239) internal successors, (2322), 1430 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2322 transitions. [2023-12-16 06:14:23,667 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2322 transitions. Word has length 62 [2023-12-16 06:14:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:23,667 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2322 transitions. [2023-12-16 06:14:23,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2322 transitions. [2023-12-16 06:14:23,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 06:14:23,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:23,670 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] [2023-12-16 06:14:23,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:14:23,670 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:23,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1124502626, now seen corresponding path program 1 times [2023-12-16 06:14:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:23,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915334672] [2023-12-16 06:14:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:23,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915334672] [2023-12-16 06:14:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915334672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:23,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170879309] [2023-12-16 06:14:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:23,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:23,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:23,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:23,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:23,763 INFO L87 Difference]: Start difference. First operand 1431 states and 2322 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:23,814 INFO L93 Difference]: Finished difference Result 4198 states and 6909 transitions. [2023-12-16 06:14:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:14:23,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 06:14:23,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:23,822 INFO L225 Difference]: With dead ends: 4198 [2023-12-16 06:14:23,822 INFO L226 Difference]: Without dead ends: 2845 [2023-12-16 06:14:23,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:23,825 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 379 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:23,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 605 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2023-12-16 06:14:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2126. [2023-12-16 06:14:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 1.6305882352941177) internal successors, (3465), 2125 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3465 transitions. [2023-12-16 06:14:23,874 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3465 transitions. Word has length 63 [2023-12-16 06:14:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:23,875 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 3465 transitions. [2023-12-16 06:14:23,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3465 transitions. [2023-12-16 06:14:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 06:14:23,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:23,877 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] [2023-12-16 06:14:23,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:14:23,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:23,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:23,877 INFO L85 PathProgramCache]: Analyzing trace with hash -808788401, now seen corresponding path program 1 times [2023-12-16 06:14:23,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:23,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26924623] [2023-12-16 06:14:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:23,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26924623] [2023-12-16 06:14:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26924623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:23,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433726570] [2023-12-16 06:14:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:23,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:23,927 INFO L87 Difference]: Start difference. First operand 2126 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:23,952 INFO L93 Difference]: Finished difference Result 4120 states and 6751 transitions. [2023-12-16 06:14:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:23,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 06:14:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:23,961 INFO L225 Difference]: With dead ends: 4120 [2023-12-16 06:14:23,961 INFO L226 Difference]: Without dead ends: 2978 [2023-12-16 06:14:23,965 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 [2023-12-16 06:14:23,966 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:23,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 424 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2023-12-16 06:14:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2976. [2023-12-16 06:14:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 1.6258823529411766) internal successors, (4837), 2975 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4837 transitions. [2023-12-16 06:14:24,015 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4837 transitions. Word has length 63 [2023-12-16 06:14:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:24,015 INFO L495 AbstractCegarLoop]: Abstraction has 2976 states and 4837 transitions. [2023-12-16 06:14:24,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4837 transitions. [2023-12-16 06:14:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 06:14:24,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:24,017 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] [2023-12-16 06:14:24,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:14:24,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:24,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1440634225, now seen corresponding path program 1 times [2023-12-16 06:14:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:24,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682055730] [2023-12-16 06:14:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:24,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682055730] [2023-12-16 06:14:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682055730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:24,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190461616] [2023-12-16 06:14:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:24,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:24,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:24,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:24,060 INFO L87 Difference]: Start difference. First operand 2976 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:24,128 INFO L93 Difference]: Finished difference Result 6398 states and 10549 transitions. [2023-12-16 06:14:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 06:14:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:24,138 INFO L225 Difference]: With dead ends: 6398 [2023-12-16 06:14:24,138 INFO L226 Difference]: Without dead ends: 4312 [2023-12-16 06:14:24,140 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 [2023-12-16 06:14:24,141 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:24,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2023-12-16 06:14:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2023-12-16 06:14:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 1.633325597586447) internal successors, (7038), 4309 states have internal predecessors, (7038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 7038 transitions. [2023-12-16 06:14:24,203 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 7038 transitions. Word has length 63 [2023-12-16 06:14:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:24,203 INFO L495 AbstractCegarLoop]: Abstraction has 4310 states and 7038 transitions. [2023-12-16 06:14:24,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 7038 transitions. [2023-12-16 06:14:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 06:14:24,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:24,204 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] [2023-12-16 06:14:24,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:14:24,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:24,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 441896861, now seen corresponding path program 1 times [2023-12-16 06:14:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839888018] [2023-12-16 06:14:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:24,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:24,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839888018] [2023-12-16 06:14:24,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839888018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:24,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:24,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:24,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545398771] [2023-12-16 06:14:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:24,257 INFO L87 Difference]: Start difference. First operand 4310 states and 7038 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:24,343 INFO L93 Difference]: Finished difference Result 13701 states and 22481 transitions. [2023-12-16 06:14:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:14:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-16 06:14:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:24,382 INFO L225 Difference]: With dead ends: 13701 [2023-12-16 06:14:24,383 INFO L226 Difference]: Without dead ends: 9472 [2023-12-16 06:14:24,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:24,394 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:24,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 679 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2023-12-16 06:14:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 6862. [2023-12-16 06:14:24,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6862 states, 6861 states have (on average 1.6265850459116746) internal successors, (11160), 6861 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 11160 transitions. [2023-12-16 06:14:24,506 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 11160 transitions. Word has length 64 [2023-12-16 06:14:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:24,506 INFO L495 AbstractCegarLoop]: Abstraction has 6862 states and 11160 transitions. [2023-12-16 06:14:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 11160 transitions. [2023-12-16 06:14:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-16 06:14:24,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:24,509 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] [2023-12-16 06:14:24,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:14:24,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:24,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:24,510 INFO L85 PathProgramCache]: Analyzing trace with hash 760512649, now seen corresponding path program 1 times [2023-12-16 06:14:24,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970565191] [2023-12-16 06:14:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970565191] [2023-12-16 06:14:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970565191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:24,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:24,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131916217] [2023-12-16 06:14:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:24,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:24,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:24,554 INFO L87 Difference]: Start difference. First operand 6862 states and 11160 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:24,710 INFO L93 Difference]: Finished difference Result 21433 states and 34993 transitions. [2023-12-16 06:14:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:14:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-16 06:14:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:24,733 INFO L225 Difference]: With dead ends: 21433 [2023-12-16 06:14:24,733 INFO L226 Difference]: Without dead ends: 14652 [2023-12-16 06:14:24,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:24,741 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 375 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:24,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 661 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:24,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2023-12-16 06:14:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 10714. [2023-12-16 06:14:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6191542985158218) internal successors, (17346), 10713 states have internal predecessors, (17346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17346 transitions. [2023-12-16 06:14:24,943 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17346 transitions. Word has length 65 [2023-12-16 06:14:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:24,943 INFO L495 AbstractCegarLoop]: Abstraction has 10714 states and 17346 transitions. [2023-12-16 06:14:24,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17346 transitions. [2023-12-16 06:14:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 06:14:24,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:24,944 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] [2023-12-16 06:14:24,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:14:24,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:24,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash -809096294, now seen corresponding path program 1 times [2023-12-16 06:14:24,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:24,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019308958] [2023-12-16 06:14:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:25,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:25,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019308958] [2023-12-16 06:14:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019308958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:25,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008376007] [2023-12-16 06:14:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:25,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:25,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:25,087 INFO L87 Difference]: Start difference. First operand 10714 states and 17346 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:25,186 INFO L93 Difference]: Finished difference Result 21349 states and 34582 transitions. [2023-12-16 06:14:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-16 06:14:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:25,203 INFO L225 Difference]: With dead ends: 21349 [2023-12-16 06:14:25,203 INFO L226 Difference]: Without dead ends: 10716 [2023-12-16 06:14:25,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:14:25,216 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 209 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:25,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 549 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2023-12-16 06:14:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10714. [2023-12-16 06:14:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6074862316811351) internal successors, (17221), 10713 states have internal predecessors, (17221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17221 transitions. [2023-12-16 06:14:25,420 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17221 transitions. Word has length 67 [2023-12-16 06:14:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:25,420 INFO L495 AbstractCegarLoop]: Abstraction has 10714 states and 17221 transitions. [2023-12-16 06:14:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17221 transitions. [2023-12-16 06:14:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 06:14:25,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:25,421 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] [2023-12-16 06:14:25,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:14:25,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:25,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:25,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1815177743, now seen corresponding path program 1 times [2023-12-16 06:14:25,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:25,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80674666] [2023-12-16 06:14:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:25,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:25,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80674666] [2023-12-16 06:14:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80674666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:25,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:25,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105542723] [2023-12-16 06:14:25,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:25,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:25,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:25,535 INFO L87 Difference]: Start difference. First operand 10714 states and 17221 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:25,660 INFO L93 Difference]: Finished difference Result 30659 states and 49436 transitions. [2023-12-16 06:14:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-16 06:14:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:25,690 INFO L225 Difference]: With dead ends: 30659 [2023-12-16 06:14:25,690 INFO L226 Difference]: Without dead ends: 20026 [2023-12-16 06:14:25,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:14:25,708 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 103 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:25,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 740 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2023-12-16 06:14:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2023-12-16 06:14:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.5949657893422564) internal successors, (31936), 20023 states have internal predecessors, (31936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 31936 transitions. [2023-12-16 06:14:26,008 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 31936 transitions. Word has length 70 [2023-12-16 06:14:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:26,008 INFO L495 AbstractCegarLoop]: Abstraction has 20024 states and 31936 transitions. [2023-12-16 06:14:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 31936 transitions. [2023-12-16 06:14:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 06:14:26,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:26,009 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] [2023-12-16 06:14:26,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:14:26,009 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:26,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash 434025879, now seen corresponding path program 1 times [2023-12-16 06:14:26,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:26,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063844542] [2023-12-16 06:14:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:26,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063844542] [2023-12-16 06:14:26,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063844542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:26,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:26,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:26,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987322378] [2023-12-16 06:14:26,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:26,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:26,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:26,238 INFO L87 Difference]: Start difference. First operand 20024 states and 31936 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:26,414 INFO L93 Difference]: Finished difference Result 38402 states and 60949 transitions. [2023-12-16 06:14:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:14:26,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-16 06:14:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:26,478 INFO L225 Difference]: With dead ends: 38402 [2023-12-16 06:14:26,478 INFO L226 Difference]: Without dead ends: 38400 [2023-12-16 06:14:26,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:14:26,494 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 234 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:26,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 937 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38400 states. [2023-12-16 06:14:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38400 to 20748. [2023-12-16 06:14:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20748 states, 20747 states have (on average 1.5737697016436112) internal successors, (32651), 20747 states have internal predecessors, (32651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20748 states to 20748 states and 32651 transitions. [2023-12-16 06:14:26,893 INFO L78 Accepts]: Start accepts. Automaton has 20748 states and 32651 transitions. Word has length 71 [2023-12-16 06:14:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:26,893 INFO L495 AbstractCegarLoop]: Abstraction has 20748 states and 32651 transitions. [2023-12-16 06:14:26,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 20748 states and 32651 transitions. [2023-12-16 06:14:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 06:14:26,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:26,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:26,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:14:26,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:26,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 575576521, now seen corresponding path program 1 times [2023-12-16 06:14:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378060731] [2023-12-16 06:14:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 06:14:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378060731] [2023-12-16 06:14:26,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378060731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:26,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961757160] [2023-12-16 06:14:26,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:26,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:26,989 INFO L87 Difference]: Start difference. First operand 20748 states and 32651 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:27,233 INFO L93 Difference]: Finished difference Result 50556 states and 79853 transitions. [2023-12-16 06:14:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-16 06:14:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:27,291 INFO L225 Difference]: With dead ends: 50556 [2023-12-16 06:14:27,291 INFO L226 Difference]: Without dead ends: 40764 [2023-12-16 06:14:27,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:14:27,310 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 479 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:27,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 934 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2023-12-16 06:14:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 31834. [2023-12-16 06:14:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 1.5725504979109728) internal successors, (50059), 31833 states have internal predecessors, (50059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 50059 transitions. [2023-12-16 06:14:27,742 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 50059 transitions. Word has length 92 [2023-12-16 06:14:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:27,742 INFO L495 AbstractCegarLoop]: Abstraction has 31834 states and 50059 transitions. [2023-12-16 06:14:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 50059 transitions. [2023-12-16 06:14:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 06:14:27,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:27,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:27,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:14:27,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:27,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1946475532, now seen corresponding path program 1 times [2023-12-16 06:14:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313942236] [2023-12-16 06:14:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 06:14:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:27,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313942236] [2023-12-16 06:14:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313942236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:27,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:27,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705361337] [2023-12-16 06:14:27,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:27,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:27,820 INFO L87 Difference]: Start difference. First operand 31834 states and 50059 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:28,172 INFO L93 Difference]: Finished difference Result 54448 states and 86017 transitions. [2023-12-16 06:14:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-16 06:14:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:28,239 INFO L225 Difference]: With dead ends: 54448 [2023-12-16 06:14:28,239 INFO L226 Difference]: Without dead ends: 44656 [2023-12-16 06:14:28,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:14:28,259 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 476 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:28,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 940 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44656 states. [2023-12-16 06:14:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44656 to 43066. [2023-12-16 06:14:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43066 states, 43065 states have (on average 1.5734587251828631) internal successors, (67761), 43065 states have internal predecessors, (67761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43066 states to 43066 states and 67761 transitions. [2023-12-16 06:14:29,109 INFO L78 Accepts]: Start accepts. Automaton has 43066 states and 67761 transitions. Word has length 92 [2023-12-16 06:14:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:29,109 INFO L495 AbstractCegarLoop]: Abstraction has 43066 states and 67761 transitions. [2023-12-16 06:14:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 43066 states and 67761 transitions. [2023-12-16 06:14:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 06:14:29,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:29,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:29,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 06:14:29,111 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:29,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash 621891858, now seen corresponding path program 1 times [2023-12-16 06:14:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970664533] [2023-12-16 06:14:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:14:29,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970664533] [2023-12-16 06:14:29,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970664533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:29,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:29,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 06:14:29,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932632533] [2023-12-16 06:14:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:29,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 06:14:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 06:14:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:29,190 INFO L87 Difference]: Start difference. First operand 43066 states and 67761 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:29,545 INFO L93 Difference]: Finished difference Result 61062 states and 96645 transitions. [2023-12-16 06:14:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-16 06:14:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:29,625 INFO L225 Difference]: With dead ends: 61062 [2023-12-16 06:14:29,625 INFO L226 Difference]: Without dead ends: 51040 [2023-12-16 06:14:29,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:14:29,647 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 476 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:29,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 983 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51040 states. [2023-12-16 06:14:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51040 to 49450. [2023-12-16 06:14:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49450 states, 49449 states have (on average 1.5763513923436268) internal successors, (77949), 49449 states have internal predecessors, (77949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49450 states to 49450 states and 77949 transitions. [2023-12-16 06:14:30,359 INFO L78 Accepts]: Start accepts. Automaton has 49450 states and 77949 transitions. Word has length 92 [2023-12-16 06:14:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:30,360 INFO L495 AbstractCegarLoop]: Abstraction has 49450 states and 77949 transitions. [2023-12-16 06:14:30,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 49450 states and 77949 transitions. [2023-12-16 06:14:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:14:30,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:30,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:30,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:14:30,382 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:30,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1332792260, now seen corresponding path program 1 times [2023-12-16 06:14:30,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:30,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591602951] [2023-12-16 06:14:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:30,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:30,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:30,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591602951] [2023-12-16 06:14:30,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591602951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:30,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:30,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:30,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753163980] [2023-12-16 06:14:30,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:30,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:30,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:30,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:30,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:30,479 INFO L87 Difference]: Start difference. First operand 49450 states and 77949 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2023-12-16 06:14:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:30,890 INFO L93 Difference]: Finished difference Result 92379 states and 146098 transitions. [2023-12-16 06:14:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2023-12-16 06:14:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:30,961 INFO L225 Difference]: With dead ends: 92379 [2023-12-16 06:14:30,961 INFO L226 Difference]: Without dead ends: 43010 [2023-12-16 06:14:30,997 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 [2023-12-16 06:14:30,998 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:30,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 431 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states. [2023-12-16 06:14:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43004. [2023-12-16 06:14:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43004 states, 43003 states have (on average 1.5771690347185081) internal successors, (67823), 43003 states have internal predecessors, (67823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43004 states to 43004 states and 67823 transitions. [2023-12-16 06:14:31,726 INFO L78 Accepts]: Start accepts. Automaton has 43004 states and 67823 transitions. Word has length 93 [2023-12-16 06:14:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:31,726 INFO L495 AbstractCegarLoop]: Abstraction has 43004 states and 67823 transitions. [2023-12-16 06:14:31,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2023-12-16 06:14:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 43004 states and 67823 transitions. [2023-12-16 06:14:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:14:31,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:31,741 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] [2023-12-16 06:14:31,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:14:31,741 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:31,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash -336919691, now seen corresponding path program 1 times [2023-12-16 06:14:31,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:31,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131070254] [2023-12-16 06:14:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:31,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 06:14:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131070254] [2023-12-16 06:14:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131070254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:31,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:31,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049566116] [2023-12-16 06:14:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:31,935 INFO L87 Difference]: Start difference. First operand 43004 states and 67823 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2023-12-16 06:14:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:32,348 INFO L93 Difference]: Finished difference Result 102018 states and 161792 transitions. [2023-12-16 06:14:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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 93 [2023-12-16 06:14:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:32,471 INFO L225 Difference]: With dead ends: 102018 [2023-12-16 06:14:32,471 INFO L226 Difference]: Without dead ends: 77436 [2023-12-16 06:14:32,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:32,510 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 405 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:32,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 536 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77436 states. [2023-12-16 06:14:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77436 to 67002. [2023-12-16 06:14:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67002 states, 67001 states have (on average 1.580379397322428) internal successors, (105887), 67001 states have internal predecessors, (105887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67002 states to 67002 states and 105887 transitions. [2023-12-16 06:14:33,485 INFO L78 Accepts]: Start accepts. Automaton has 67002 states and 105887 transitions. Word has length 93 [2023-12-16 06:14:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:33,485 INFO L495 AbstractCegarLoop]: Abstraction has 67002 states and 105887 transitions. [2023-12-16 06:14:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2023-12-16 06:14:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 67002 states and 105887 transitions. [2023-12-16 06:14:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:14:33,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:33,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 06:14:33,487 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:33,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:33,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1876289132, now seen corresponding path program 1 times [2023-12-16 06:14:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:33,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437148902] [2023-12-16 06:14:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:14:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:33,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437148902] [2023-12-16 06:14:33,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437148902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:33,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:33,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202377657] [2023-12-16 06:14:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:33,526 INFO L87 Difference]: Start difference. First operand 67002 states and 105887 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) [2023-12-16 06:14:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:34,165 INFO L93 Difference]: Finished difference Result 158351 states and 250595 transitions. [2023-12-16 06:14:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:34,165 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 93 [2023-12-16 06:14:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:34,398 INFO L225 Difference]: With dead ends: 158351 [2023-12-16 06:14:34,399 INFO L226 Difference]: Without dead ends: 113751 [2023-12-16 06:14:34,453 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 [2023-12-16 06:14:34,454 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:34,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 365 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113751 states. [2023-12-16 06:14:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113751 to 113430. [2023-12-16 06:14:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113430 states, 113429 states have (on average 1.5783529785151946) internal successors, (179031), 113429 states have internal predecessors, (179031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113430 states to 113430 states and 179031 transitions. [2023-12-16 06:14:36,031 INFO L78 Accepts]: Start accepts. Automaton has 113430 states and 179031 transitions. Word has length 93 [2023-12-16 06:14:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:36,031 INFO L495 AbstractCegarLoop]: Abstraction has 113430 states and 179031 transitions. [2023-12-16 06:14:36,031 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) [2023-12-16 06:14:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 113430 states and 179031 transitions. [2023-12-16 06:14:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:14:36,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:36,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:14:36,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:14:36,049 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:36,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1267915824, now seen corresponding path program 1 times [2023-12-16 06:14:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339391177] [2023-12-16 06:14:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:36,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:36,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339391177] [2023-12-16 06:14:36,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339391177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:36,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:36,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:36,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612537908] [2023-12-16 06:14:36,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:36,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:36,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:36,113 INFO L87 Difference]: Start difference. First operand 113430 states and 179031 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2023-12-16 06:14:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:36,725 INFO L93 Difference]: Finished difference Result 164374 states and 259542 transitions. [2023-12-16 06:14:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:36,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 [2023-12-16 06:14:36,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:36,811 INFO L225 Difference]: With dead ends: 164374 [2023-12-16 06:14:36,811 INFO L226 Difference]: Without dead ends: 51048 [2023-12-16 06:14:36,863 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 [2023-12-16 06:14:36,864 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 65 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:36,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 409 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51048 states. [2023-12-16 06:14:37,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51048 to 51046. [2023-12-16 06:14:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51046 states, 51045 states have (on average 1.5693995494171809) internal successors, (80110), 51045 states have internal predecessors, (80110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51046 states to 51046 states and 80110 transitions. [2023-12-16 06:14:37,690 INFO L78 Accepts]: Start accepts. Automaton has 51046 states and 80110 transitions. Word has length 93 [2023-12-16 06:14:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:37,691 INFO L495 AbstractCegarLoop]: Abstraction has 51046 states and 80110 transitions. [2023-12-16 06:14:37,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2023-12-16 06:14:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 51046 states and 80110 transitions. [2023-12-16 06:14:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:14:37,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:37,692 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] [2023-12-16 06:14:37,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 06:14:37,692 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:37,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1178389553, now seen corresponding path program 1 times [2023-12-16 06:14:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:37,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947559864] [2023-12-16 06:14:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 06:14:38,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947559864] [2023-12-16 06:14:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947559864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:38,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:38,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:38,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651196616] [2023-12-16 06:14:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:38,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:38,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:38,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:38,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:38,153 INFO L87 Difference]: Start difference. First operand 51046 states and 80110 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2023-12-16 06:14:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:38,439 INFO L93 Difference]: Finished difference Result 115836 states and 182823 transitions. [2023-12-16 06:14:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 06:14:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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 93 [2023-12-16 06:14:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:38,571 INFO L225 Difference]: With dead ends: 115836 [2023-12-16 06:14:38,571 INFO L226 Difference]: Without dead ends: 88418 [2023-12-16 06:14:38,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 06:14:38,616 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 380 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:38,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 570 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88418 states. [2023-12-16 06:14:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88418 to 76866. [2023-12-16 06:14:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76866 states, 76865 states have (on average 1.57226305860925) internal successors, (120852), 76865 states have internal predecessors, (120852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76866 states to 76866 states and 120852 transitions. [2023-12-16 06:14:39,694 INFO L78 Accepts]: Start accepts. Automaton has 76866 states and 120852 transitions. Word has length 93 [2023-12-16 06:14:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:39,694 INFO L495 AbstractCegarLoop]: Abstraction has 76866 states and 120852 transitions. [2023-12-16 06:14:39,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2023-12-16 06:14:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 76866 states and 120852 transitions. [2023-12-16 06:14:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 06:14:39,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:39,701 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] [2023-12-16 06:14:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:14:39,701 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:39,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:39,701 INFO L85 PathProgramCache]: Analyzing trace with hash 562329573, now seen corresponding path program 1 times [2023-12-16 06:14:39,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938586128] [2023-12-16 06:14:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:14:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938586128] [2023-12-16 06:14:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938586128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493997168] [2023-12-16 06:14:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:39,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:39,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:39,777 INFO L87 Difference]: Start difference. First operand 76866 states and 120852 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2023-12-16 06:14:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:40,311 INFO L93 Difference]: Finished difference Result 135697 states and 213973 transitions. [2023-12-16 06:14:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:14:40,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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 93 [2023-12-16 06:14:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:40,465 INFO L225 Difference]: With dead ends: 135697 [2023-12-16 06:14:40,465 INFO L226 Difference]: Without dead ends: 105795 [2023-12-16 06:14:40,503 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 [2023-12-16 06:14:40,504 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 212 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:40,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 709 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105795 states. [2023-12-16 06:14:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105795 to 99670. [2023-12-16 06:14:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99670 states, 99669 states have (on average 1.570046855090349) internal successors, (156485), 99669 states have internal predecessors, (156485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99670 states to 99670 states and 156485 transitions. [2023-12-16 06:14:41,872 INFO L78 Accepts]: Start accepts. Automaton has 99670 states and 156485 transitions. Word has length 93 [2023-12-16 06:14:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:41,872 INFO L495 AbstractCegarLoop]: Abstraction has 99670 states and 156485 transitions. [2023-12-16 06:14:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2023-12-16 06:14:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 99670 states and 156485 transitions. [2023-12-16 06:14:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 06:14:41,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:41,873 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] [2023-12-16 06:14:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:14:41,874 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:41,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1284766273, now seen corresponding path program 1 times [2023-12-16 06:14:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111364289] [2023-12-16 06:14:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:41,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:41,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111364289] [2023-12-16 06:14:41,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111364289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:41,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:41,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222706336] [2023-12-16 06:14:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:41,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:41,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:41,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:41,910 INFO L87 Difference]: Start difference. First operand 99670 states and 156485 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2023-12-16 06:14:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:42,771 INFO L93 Difference]: Finished difference Result 293953 states and 461354 transitions. [2023-12-16 06:14:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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 [2023-12-16 06:14:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:43,075 INFO L225 Difference]: With dead ends: 293953 [2023-12-16 06:14:43,075 INFO L226 Difference]: Without dead ends: 194366 [2023-12-16 06:14:43,166 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 [2023-12-16 06:14:43,167 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 153 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:43,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 488 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194366 states. [2023-12-16 06:14:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194366 to 194364. [2023-12-16 06:14:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194364 states, 194363 states have (on average 1.5587174513667725) internal successors, (302957), 194363 states have internal predecessors, (302957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194364 states to 194364 states and 302957 transitions. [2023-12-16 06:14:46,102 INFO L78 Accepts]: Start accepts. Automaton has 194364 states and 302957 transitions. Word has length 94 [2023-12-16 06:14:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:46,102 INFO L495 AbstractCegarLoop]: Abstraction has 194364 states and 302957 transitions. [2023-12-16 06:14:46,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2023-12-16 06:14:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 194364 states and 302957 transitions. [2023-12-16 06:14:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 06:14:46,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:46,103 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] [2023-12-16 06:14:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 06:14:46,104 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:46,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:46,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2101317173, now seen corresponding path program 1 times [2023-12-16 06:14:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923136031] [2023-12-16 06:14:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:14:46,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923136031] [2023-12-16 06:14:46,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923136031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:46,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:46,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:14:46,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224186284] [2023-12-16 06:14:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:14:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:14:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:14:46,199 INFO L87 Difference]: Start difference. First operand 194364 states and 302957 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2023-12-16 06:14:48,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:48,297 INFO L93 Difference]: Finished difference Result 571489 states and 890432 transitions. [2023-12-16 06:14:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:14:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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 [2023-12-16 06:14:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:49,260 INFO L225 Difference]: With dead ends: 571489 [2023-12-16 06:14:49,260 INFO L226 Difference]: Without dead ends: 377253 [2023-12-16 06:14:49,426 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 [2023-12-16 06:14:49,427 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 135 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:49,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 455 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377253 states. [2023-12-16 06:14:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377253 to 377251. [2023-12-16 06:14:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377251 states, 377250 states have (on average 1.5459907223326705) internal successors, (583225), 377250 states have internal predecessors, (583225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:14:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377251 states to 377251 states and 583225 transitions. [2023-12-16 06:14:55,303 INFO L78 Accepts]: Start accepts. Automaton has 377251 states and 583225 transitions. Word has length 94 [2023-12-16 06:14:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:14:55,303 INFO L495 AbstractCegarLoop]: Abstraction has 377251 states and 583225 transitions. [2023-12-16 06:14:55,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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) [2023-12-16 06:14:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 377251 states and 583225 transitions. [2023-12-16 06:14:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 06:14:55,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:14:55,305 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] [2023-12-16 06:14:55,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:14:55,305 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:14:55,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:14:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1310281361, now seen corresponding path program 1 times [2023-12-16 06:14:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:14:55,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138656094] [2023-12-16 06:14:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:14:55,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:14:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:14:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:14:55,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:14:55,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138656094] [2023-12-16 06:14:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138656094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:14:55,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:14:55,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:14:55,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928584852] [2023-12-16 06:14:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:14:55,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:14:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:14:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:14:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:14:55,387 INFO L87 Difference]: Start difference. First operand 377251 states and 583225 transitions. Second operand has 4 states, 4 states have (on average 24.0) 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) [2023-12-16 06:14:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:14:57,712 INFO L93 Difference]: Finished difference Result 577729 states and 895700 transitions. [2023-12-16 06:14:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:14:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) 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 97 [2023-12-16 06:14:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:14:59,086 INFO L225 Difference]: With dead ends: 577729 [2023-12-16 06:14:59,087 INFO L226 Difference]: Without dead ends: 412023 [2023-12-16 06:14:59,184 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 [2023-12-16 06:14:59,184 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 208 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:14:59,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 701 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:14:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412023 states. [2023-12-16 06:15:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412023 to 409024. [2023-12-16 06:15:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409024 states, 409023 states have (on average 1.5448740046403258) internal successors, (631889), 409023 states have internal predecessors, (631889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:15:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409024 states to 409024 states and 631889 transitions. [2023-12-16 06:15:05,461 INFO L78 Accepts]: Start accepts. Automaton has 409024 states and 631889 transitions. Word has length 97 [2023-12-16 06:15:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:15:05,461 INFO L495 AbstractCegarLoop]: Abstraction has 409024 states and 631889 transitions. [2023-12-16 06:15:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) 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) [2023-12-16 06:15:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 409024 states and 631889 transitions. [2023-12-16 06:15:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 06:15:05,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:15:05,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:15:05,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 06:15:05,464 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:15:05,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:15:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1274763501, now seen corresponding path program 1 times [2023-12-16 06:15:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:15:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158012854] [2023-12-16 06:15:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:15:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:15:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:15:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:15:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:15:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158012854] [2023-12-16 06:15:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158012854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:15:05,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342731524] [2023-12-16 06:15:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:15:05,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:15:05,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:15:05,636 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) [2023-12-16 06:15:05,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:15:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:15:05,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 06:15:05,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:15:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:15:05,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:15:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342731524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:15:05,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 06:15:05,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 06:15:05,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844249619] [2023-12-16 06:15:05,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:15:05,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:15:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:15:05,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:15:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:15:05,901 INFO L87 Difference]: Start difference. First operand 409024 states and 631889 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:15:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:15:10,595 INFO L93 Difference]: Finished difference Result 1202603 states and 1856852 transitions. [2023-12-16 06:15:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:15:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-16 06:15:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:15:12,580 INFO L225 Difference]: With dead ends: 1202603 [2023-12-16 06:15:12,580 INFO L226 Difference]: Without dead ends: 793593 [2023-12-16 06:15:13,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:15:13,193 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 406 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:15:13,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 468 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:15:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793593 states. Received shutdown request... [2023-12-16 06:15:15,409 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:15:15,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 06:15:15,426 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:15:15,426 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:15:15,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-16 06:15:15,615 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 06:15:15,619 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:15:15,621 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:15:15,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:15:15 BoogieIcfgContainer [2023-12-16 06:15:15,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:15:15,622 INFO L158 Benchmark]: Toolchain (without parser) took 54351.26ms. Allocated memory was 342.9MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 288.6MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-16 06:15:15,622 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 217.1MB. Free memory is still 166.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:15:15,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.81ms. Allocated memory is still 342.9MB. Free memory was 288.3MB in the beginning and 268.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-16 06:15:15,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.54ms. Allocated memory is still 342.9MB. Free memory was 268.3MB in the beginning and 264.9MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:15:15,623 INFO L158 Benchmark]: Boogie Preprocessor took 72.41ms. Allocated memory is still 342.9MB. Free memory was 264.5MB in the beginning and 261.0MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:15:15,623 INFO L158 Benchmark]: RCFGBuilder took 658.18ms. Allocated memory is still 342.9MB. Free memory was 261.0MB in the beginning and 297.8MB in the end (delta: -36.8MB). Peak memory consumption was 37.9MB. Max. memory is 8.0GB. [2023-12-16 06:15:15,623 INFO L158 Benchmark]: TraceAbstraction took 53270.77ms. Allocated memory was 342.9MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 296.7MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-16 06:15:15,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 217.1MB. Free memory is still 166.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 292.81ms. Allocated memory is still 342.9MB. Free memory was 288.3MB in the beginning and 268.3MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.54ms. Allocated memory is still 342.9MB. Free memory was 268.3MB in the beginning and 264.9MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 72.41ms. Allocated memory is still 342.9MB. Free memory was 264.5MB in the beginning and 261.0MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 658.18ms. Allocated memory is still 342.9MB. Free memory was 261.0MB in the beginning and 297.8MB in the end (delta: -36.8MB). Peak memory consumption was 37.9MB. Max. memory is 8.0GB. * TraceAbstraction took 53270.77ms. Allocated memory was 342.9MB in the beginning and 8.0GB in the end (delta: 7.6GB). Free memory was 296.7MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 379]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 379). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.2s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 22.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6814 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6814 mSDsluCounter, 15971 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9492 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 845 IncrementalHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 6479 mSDtfsCounter, 845 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=409024occurred in iteration=25, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 27.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 69910 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2135 NumberOfCodeBlocks, 2135 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2108 ConstructedInterpolants, 0 QuantifiedInterpolants, 7911 SizeOfPredicates, 2 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 27 InterpolantComputations, 26 PerfectInterpolantSequences, 147/155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown