/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/systemc/token_ring.06.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 05:56:21,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 05:56:21,810 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 05:56:21,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 05:56:21,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 05:56:21,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 05:56:21,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 05:56:21,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 05:56:21,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 05:56:21,840 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 05:56:21,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 05:56:21,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 05:56:21,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 05:56:21,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 05:56:21,842 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 05:56:21,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 05:56:21,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 05:56:21,842 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 05:56:21,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 05:56:21,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 05:56:21,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 05:56:21,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 05:56:21,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 05:56:21,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 05:56:21,844 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 05:56:21,844 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 05:56:21,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 05:56:21,844 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 05:56:21,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 05:56:21,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 05:56:21,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 05:56:21,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:56:21,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 05:56:21,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 05:56:21,847 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 05:56:21,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 05:56:21,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 05:56:21,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 05:56:22,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 05:56:22,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 05:56:22,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 05:56:22,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 05:56:22,065 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 05:56:22,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.06.cil-1.c [2023-12-16 05:56:23,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 05:56:23,359 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 05:56:23,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-1.c [2023-12-16 05:56:23,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9794682a/0ed170244d30476e9bbfc438afbe839f/FLAG62c5646b9 [2023-12-16 05:56:23,386 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9794682a/0ed170244d30476e9bbfc438afbe839f [2023-12-16 05:56:23,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 05:56:23,389 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 05:56:23,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 05:56:23,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 05:56:23,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 05:56:23,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a69d7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23, skipping insertion in model container [2023-12-16 05:56:23,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 05:56:23,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-1.c[671,684] [2023-12-16 05:56:23,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:56:23,616 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 05:56:23,625 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-1.c[671,684] [2023-12-16 05:56:23,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:56:23,679 INFO L206 MainTranslator]: Completed translation [2023-12-16 05:56:23,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23 WrapperNode [2023-12-16 05:56:23,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 05:56:23,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 05:56:23,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 05:56:23,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 05:56:23,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,726 INFO L138 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 525 [2023-12-16 05:56:23,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 05:56:23,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 05:56:23,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 05:56:23,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 05:56:23,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,763 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 05:56:23,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 05:56:23,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 05:56:23,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 05:56:23,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 05:56:23,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (1/1) ... [2023-12-16 05:56:23,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:56:23,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:56:23,833 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 05:56:23,877 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 05:56:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 05:56:23,882 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-16 05:56:23,883 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-16 05:56:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 05:56:23,883 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 05:56:23,883 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 05:56:23,884 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 05:56:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 05:56:23,885 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 05:56:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 05:56:23,885 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 05:56:23,885 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 05:56:23,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 05:56:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 05:56:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 05:56:23,886 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 05:56:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 05:56:23,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 05:56:23,969 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 05:56:23,971 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 05:56:24,331 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 05:56:24,368 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 05:56:24,368 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-16 05:56:24,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:56:24 BoogieIcfgContainer [2023-12-16 05:56:24,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 05:56:24,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 05:56:24,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 05:56:24,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 05:56:24,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:56:23" (1/3) ... [2023-12-16 05:56:24,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fce1a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:56:24, skipping insertion in model container [2023-12-16 05:56:24,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:23" (2/3) ... [2023-12-16 05:56:24,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fce1a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:56:24, skipping insertion in model container [2023-12-16 05:56:24,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:56:24" (3/3) ... [2023-12-16 05:56:24,374 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2023-12-16 05:56:24,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 05:56:24,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 05:56:24,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 05:56:24,429 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;@eac0066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 05:56:24,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 05:56:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 187 states have (on average 1.7165775401069518) internal successors, (321), 191 states have internal predecessors, (321), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 05:56:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:24,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:24,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:24,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:24,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:24,461 INFO L85 PathProgramCache]: Analyzing trace with hash -390933709, now seen corresponding path program 1 times [2023-12-16 05:56:24,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:24,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790588494] [2023-12-16 05:56:24,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:24,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:24,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 05:56:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790588494] [2023-12-16 05:56:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790588494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:24,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:24,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 05:56:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447220583] [2023-12-16 05:56:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:56:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:56:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 05:56:24,814 INFO L87 Difference]: Start difference. First operand has 218 states, 187 states have (on average 1.7165775401069518) internal successors, (321), 191 states have internal predecessors, (321), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:25,645 INFO L93 Difference]: Finished difference Result 501 states and 849 transitions. [2023-12-16 05:56:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 05:56:25,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:25,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:25,656 INFO L225 Difference]: With dead ends: 501 [2023-12-16 05:56:25,656 INFO L226 Difference]: Without dead ends: 285 [2023-12-16 05:56:25,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 05:56:25,670 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 567 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:25,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 408 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 05:56:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-16 05:56:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 215. [2023-12-16 05:56:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 186 states have (on average 1.60752688172043) internal successors, (299), 188 states have internal predecessors, (299), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 05:56:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 341 transitions. [2023-12-16 05:56:25,740 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 341 transitions. Word has length 101 [2023-12-16 05:56:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:25,741 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 341 transitions. [2023-12-16 05:56:25,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 341 transitions. [2023-12-16 05:56:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:25,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:25,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:25,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 05:56:25,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:25,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash 665797493, now seen corresponding path program 1 times [2023-12-16 05:56:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:25,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439636532] [2023-12-16 05:56:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:25,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:26,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:26,034 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 05:56:26,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:26,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439636532] [2023-12-16 05:56:26,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439636532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:26,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:26,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 05:56:26,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241398839] [2023-12-16 05:56:26,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:26,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 05:56:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 05:56:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 05:56:26,037 INFO L87 Difference]: Start difference. First operand 215 states and 341 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:27,178 INFO L93 Difference]: Finished difference Result 768 states and 1247 transitions. [2023-12-16 05:56:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 05:56:27,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:27,182 INFO L225 Difference]: With dead ends: 768 [2023-12-16 05:56:27,182 INFO L226 Difference]: Without dead ends: 565 [2023-12-16 05:56:27,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:56:27,184 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 839 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:27,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 762 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 05:56:27,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-16 05:56:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 424. [2023-12-16 05:56:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 373 states have (on average 1.616621983914209) internal successors, (603), 376 states have internal predecessors, (603), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-12-16 05:56:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 678 transitions. [2023-12-16 05:56:27,215 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 678 transitions. Word has length 101 [2023-12-16 05:56:27,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:27,216 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 678 transitions. [2023-12-16 05:56:27,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:27,216 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 678 transitions. [2023-12-16 05:56:27,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:27,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:27,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:27,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 05:56:27,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:27,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:27,218 INFO L85 PathProgramCache]: Analyzing trace with hash 354280885, now seen corresponding path program 1 times [2023-12-16 05:56:27,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:27,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541303692] [2023-12-16 05:56:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:27,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:27,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:27,398 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 05:56:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541303692] [2023-12-16 05:56:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541303692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:27,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:27,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816327914] [2023-12-16 05:56:27,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:27,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:27,401 INFO L87 Difference]: Start difference. First operand 424 states and 678 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:28,970 INFO L93 Difference]: Finished difference Result 1263 states and 2049 transitions. [2023-12-16 05:56:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 05:56:28,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:28,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:28,974 INFO L225 Difference]: With dead ends: 1263 [2023-12-16 05:56:28,974 INFO L226 Difference]: Without dead ends: 851 [2023-12-16 05:56:28,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 05:56:28,976 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 850 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:28,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1291 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 05:56:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-16 05:56:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 618. [2023-12-16 05:56:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 545 states have (on average 1.6091743119266055) internal successors, (877), 549 states have internal predecessors, (877), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2023-12-16 05:56:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 984 transitions. [2023-12-16 05:56:29,002 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 984 transitions. Word has length 101 [2023-12-16 05:56:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:29,002 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 984 transitions. [2023-12-16 05:56:29,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 984 transitions. [2023-12-16 05:56:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:29,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:29,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:29,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 05:56:29,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:29,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1604293901, now seen corresponding path program 1 times [2023-12-16 05:56:29,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:29,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143017262] [2023-12-16 05:56:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:29,134 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 05:56:29,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:29,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143017262] [2023-12-16 05:56:29,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143017262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:29,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:29,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:29,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515392713] [2023-12-16 05:56:29,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:29,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:29,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:29,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:29,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:29,136 INFO L87 Difference]: Start difference. First operand 618 states and 984 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:30,521 INFO L93 Difference]: Finished difference Result 1988 states and 3219 transitions. [2023-12-16 05:56:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 05:56:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:30,529 INFO L225 Difference]: With dead ends: 1988 [2023-12-16 05:56:30,529 INFO L226 Difference]: Without dead ends: 1382 [2023-12-16 05:56:30,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 05:56:30,538 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 920 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:30,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 842 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 05:56:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-12-16 05:56:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1007. [2023-12-16 05:56:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 890 states have (on average 1.602247191011236) internal successors, (1426), 896 states have internal predecessors, (1426), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-16 05:56:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1601 transitions. [2023-12-16 05:56:30,586 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1601 transitions. Word has length 101 [2023-12-16 05:56:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:30,587 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1601 transitions. [2023-12-16 05:56:30,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1601 transitions. [2023-12-16 05:56:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:30,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:30,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:30,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 05:56:30,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:30,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 272188917, now seen corresponding path program 1 times [2023-12-16 05:56:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:30,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138422150] [2023-12-16 05:56:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:30,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:30,721 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 05:56:30,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:30,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138422150] [2023-12-16 05:56:30,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138422150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:30,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:30,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:30,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627599986] [2023-12-16 05:56:30,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:30,723 INFO L87 Difference]: Start difference. First operand 1007 states and 1601 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:31,352 INFO L93 Difference]: Finished difference Result 2361 states and 3819 transitions. [2023-12-16 05:56:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 05:56:31,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:31,357 INFO L225 Difference]: With dead ends: 2361 [2023-12-16 05:56:31,357 INFO L226 Difference]: Without dead ends: 1366 [2023-12-16 05:56:31,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:56:31,360 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 715 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:31,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 543 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 05:56:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2023-12-16 05:56:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1007. [2023-12-16 05:56:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 890 states have (on average 1.5966292134831461) internal successors, (1421), 896 states have internal predecessors, (1421), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-16 05:56:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1596 transitions. [2023-12-16 05:56:31,397 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1596 transitions. Word has length 101 [2023-12-16 05:56:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:31,397 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1596 transitions. [2023-12-16 05:56:31,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1596 transitions. [2023-12-16 05:56:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:31,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:31,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:31,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 05:56:31,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:31,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1597045111, now seen corresponding path program 1 times [2023-12-16 05:56:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277451752] [2023-12-16 05:56:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:31,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:31,533 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 05:56:31,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:31,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277451752] [2023-12-16 05:56:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277451752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:31,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:31,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:31,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787103327] [2023-12-16 05:56:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:31,535 INFO L87 Difference]: Start difference. First operand 1007 states and 1596 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:32,180 INFO L93 Difference]: Finished difference Result 2355 states and 3792 transitions. [2023-12-16 05:56:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 05:56:32,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:32,185 INFO L225 Difference]: With dead ends: 2355 [2023-12-16 05:56:32,185 INFO L226 Difference]: Without dead ends: 1360 [2023-12-16 05:56:32,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:56:32,188 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 713 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:32,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 543 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 05:56:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-16 05:56:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1007. [2023-12-16 05:56:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 890 states have (on average 1.5910112359550561) internal successors, (1416), 896 states have internal predecessors, (1416), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2023-12-16 05:56:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1591 transitions. [2023-12-16 05:56:32,225 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1591 transitions. Word has length 101 [2023-12-16 05:56:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:32,225 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1591 transitions. [2023-12-16 05:56:32,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1591 transitions. [2023-12-16 05:56:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:32,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:32,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:32,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 05:56:32,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:32,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1131164235, now seen corresponding path program 1 times [2023-12-16 05:56:32,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:32,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197186682] [2023-12-16 05:56:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:32,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:32,330 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 05:56:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197186682] [2023-12-16 05:56:32,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197186682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:32,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:32,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:32,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933017002] [2023-12-16 05:56:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:32,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:32,331 INFO L87 Difference]: Start difference. First operand 1007 states and 1591 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:33,784 INFO L93 Difference]: Finished difference Result 3366 states and 5384 transitions. [2023-12-16 05:56:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 05:56:33,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:33,793 INFO L225 Difference]: With dead ends: 3366 [2023-12-16 05:56:33,793 INFO L226 Difference]: Without dead ends: 2371 [2023-12-16 05:56:33,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 05:56:33,795 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 834 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:33,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1289 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 05:56:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2023-12-16 05:56:33,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1801. [2023-12-16 05:56:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1596 states have (on average 1.5839598997493733) internal successors, (2528), 1606 states have internal predecessors, (2528), 142 states have call successors, (142), 55 states have call predecessors, (142), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2023-12-16 05:56:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2845 transitions. [2023-12-16 05:56:33,865 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2845 transitions. Word has length 101 [2023-12-16 05:56:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:33,865 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2845 transitions. [2023-12-16 05:56:33,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2845 transitions. [2023-12-16 05:56:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:33,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:33,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:33,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 05:56:33,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:33,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2105964983, now seen corresponding path program 1 times [2023-12-16 05:56:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095222050] [2023-12-16 05:56:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:33,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:33,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:33,980 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 05:56:33,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095222050] [2023-12-16 05:56:33,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095222050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:33,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:33,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700292203] [2023-12-16 05:56:33,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:33,982 INFO L87 Difference]: Start difference. First operand 1801 states and 2845 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:35,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:35,612 INFO L93 Difference]: Finished difference Result 6798 states and 10866 transitions. [2023-12-16 05:56:35,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:56:35,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:35,633 INFO L225 Difference]: With dead ends: 6798 [2023-12-16 05:56:35,633 INFO L226 Difference]: Without dead ends: 5009 [2023-12-16 05:56:35,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 05:56:35,640 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1057 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:35,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1282 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 05:56:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2023-12-16 05:56:35,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 3374. [2023-12-16 05:56:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3001 states have (on average 1.5801399533488838) internal successors, (4742), 3019 states have internal predecessors, (4742), 254 states have call successors, (254), 103 states have call predecessors, (254), 118 states have return successors, (349), 267 states have call predecessors, (349), 252 states have call successors, (349) [2023-12-16 05:56:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 5345 transitions. [2023-12-16 05:56:35,832 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 5345 transitions. Word has length 101 [2023-12-16 05:56:35,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:35,833 INFO L495 AbstractCegarLoop]: Abstraction has 3374 states and 5345 transitions. [2023-12-16 05:56:35,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 5345 transitions. [2023-12-16 05:56:35,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:35,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:35,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:35,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 05:56:35,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:35,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:35,837 INFO L85 PathProgramCache]: Analyzing trace with hash 963462517, now seen corresponding path program 1 times [2023-12-16 05:56:35,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:35,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160167949] [2023-12-16 05:56:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:35,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:35,968 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 05:56:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:35,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160167949] [2023-12-16 05:56:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160167949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:35,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822437174] [2023-12-16 05:56:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:35,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:35,970 INFO L87 Difference]: Start difference. First operand 3374 states and 5345 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:37,941 INFO L93 Difference]: Finished difference Result 12793 states and 20500 transitions. [2023-12-16 05:56:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:56:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:37,977 INFO L225 Difference]: With dead ends: 12793 [2023-12-16 05:56:37,978 INFO L226 Difference]: Without dead ends: 9431 [2023-12-16 05:56:37,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 05:56:37,988 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 878 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:37,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1278 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 05:56:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2023-12-16 05:56:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 6359. [2023-12-16 05:56:38,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 5658 states have (on average 1.5722870272180982) internal successors, (8896), 5692 states have internal predecessors, (8896), 470 states have call successors, (470), 199 states have call predecessors, (470), 230 states have return successors, (743), 499 states have call predecessors, (743), 468 states have call successors, (743) [2023-12-16 05:56:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 10109 transitions. [2023-12-16 05:56:38,284 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 10109 transitions. Word has length 101 [2023-12-16 05:56:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:38,284 INFO L495 AbstractCegarLoop]: Abstraction has 6359 states and 10109 transitions. [2023-12-16 05:56:38,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 10109 transitions. [2023-12-16 05:56:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:38,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:38,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 05:56:38,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:38,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:38,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1203702263, now seen corresponding path program 1 times [2023-12-16 05:56:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:38,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385196998] [2023-12-16 05:56:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:38,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:38,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:38,400 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 05:56:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385196998] [2023-12-16 05:56:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385196998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:38,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:38,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284294809] [2023-12-16 05:56:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:38,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:38,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:38,401 INFO L87 Difference]: Start difference. First operand 6359 states and 10109 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:39,287 INFO L93 Difference]: Finished difference Result 14535 states and 23463 transitions. [2023-12-16 05:56:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 05:56:39,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:39,329 INFO L225 Difference]: With dead ends: 14535 [2023-12-16 05:56:39,329 INFO L226 Difference]: Without dead ends: 8188 [2023-12-16 05:56:39,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:56:39,347 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 712 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:39,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 542 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 05:56:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8188 states. [2023-12-16 05:56:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8188 to 6359. [2023-12-16 05:56:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 5658 states have (on average 1.5664545775892542) internal successors, (8863), 5692 states have internal predecessors, (8863), 470 states have call successors, (470), 199 states have call predecessors, (470), 230 states have return successors, (743), 499 states have call predecessors, (743), 468 states have call successors, (743) [2023-12-16 05:56:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 10076 transitions. [2023-12-16 05:56:39,610 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 10076 transitions. Word has length 101 [2023-12-16 05:56:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:39,610 INFO L495 AbstractCegarLoop]: Abstraction has 6359 states and 10076 transitions. [2023-12-16 05:56:39,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 10076 transitions. [2023-12-16 05:56:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:39,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:39,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:39,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 05:56:39,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:39,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2042735925, now seen corresponding path program 1 times [2023-12-16 05:56:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074912810] [2023-12-16 05:56:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:39,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:39,765 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 05:56:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074912810] [2023-12-16 05:56:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074912810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:39,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:39,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:39,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214262146] [2023-12-16 05:56:39,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:39,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:39,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:39,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:39,766 INFO L87 Difference]: Start difference. First operand 6359 states and 10076 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:41,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:41,490 INFO L93 Difference]: Finished difference Result 23662 states and 37898 transitions. [2023-12-16 05:56:41,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:56:41,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:41,542 INFO L225 Difference]: With dead ends: 23662 [2023-12-16 05:56:41,542 INFO L226 Difference]: Without dead ends: 17315 [2023-12-16 05:56:41,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 05:56:41,563 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1002 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:41,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 842 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 05:56:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17315 states. [2023-12-16 05:56:42,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17315 to 12521. [2023-12-16 05:56:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 11180 states have (on average 1.564490161001789) internal successors, (17491), 11246 states have internal predecessors, (17491), 886 states have call successors, (886), 391 states have call predecessors, (886), 454 states have return successors, (1677), 947 states have call predecessors, (1677), 884 states have call successors, (1677) [2023-12-16 05:56:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 20054 transitions. [2023-12-16 05:56:42,185 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 20054 transitions. Word has length 101 [2023-12-16 05:56:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:42,185 INFO L495 AbstractCegarLoop]: Abstraction has 12521 states and 20054 transitions. [2023-12-16 05:56:42,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:42,186 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 20054 transitions. [2023-12-16 05:56:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:42,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:42,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:42,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 05:56:42,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:42,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2069801527, now seen corresponding path program 1 times [2023-12-16 05:56:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:42,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750223069] [2023-12-16 05:56:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:42,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:42,315 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 05:56:42,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:42,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750223069] [2023-12-16 05:56:42,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750223069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:42,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:42,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:42,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106217206] [2023-12-16 05:56:42,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:42,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:42,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:42,317 INFO L87 Difference]: Start difference. First operand 12521 states and 20054 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:43,304 INFO L93 Difference]: Finished difference Result 28293 states and 46034 transitions. [2023-12-16 05:56:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 05:56:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:43,354 INFO L225 Difference]: With dead ends: 28293 [2023-12-16 05:56:43,355 INFO L226 Difference]: Without dead ends: 15784 [2023-12-16 05:56:43,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:56:43,386 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 715 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:43,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 542 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 05:56:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15784 states. [2023-12-16 05:56:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15784 to 12521. [2023-12-16 05:56:43,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 11180 states have (on average 1.5586762075134168) internal successors, (17426), 11246 states have internal predecessors, (17426), 886 states have call successors, (886), 391 states have call predecessors, (886), 454 states have return successors, (1677), 947 states have call predecessors, (1677), 884 states have call successors, (1677) [2023-12-16 05:56:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 19989 transitions. [2023-12-16 05:56:43,908 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 19989 transitions. Word has length 101 [2023-12-16 05:56:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:43,908 INFO L495 AbstractCegarLoop]: Abstraction has 12521 states and 19989 transitions. [2023-12-16 05:56:43,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 19989 transitions. [2023-12-16 05:56:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:43,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:43,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:43,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 05:56:43,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:43,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash -491061319, now seen corresponding path program 1 times [2023-12-16 05:56:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:43,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871350318] [2023-12-16 05:56:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:44,035 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 05:56:44,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:44,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871350318] [2023-12-16 05:56:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871350318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:56:44,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893636138] [2023-12-16 05:56:44,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:44,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:56:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:56:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:44,036 INFO L87 Difference]: Start difference. First operand 12521 states and 19989 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:46,413 INFO L93 Difference]: Finished difference Result 44154 states and 71302 transitions. [2023-12-16 05:56:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:56:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:46,512 INFO L225 Difference]: With dead ends: 44154 [2023-12-16 05:56:46,513 INFO L226 Difference]: Without dead ends: 31645 [2023-12-16 05:56:46,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 05:56:46,549 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 817 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:46,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1282 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 05:56:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31645 states. [2023-12-16 05:56:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31645 to 24972. [2023-12-16 05:56:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24972 states, 22383 states have (on average 1.5579681007907786) internal successors, (34872), 22513 states have internal predecessors, (34872), 1686 states have call successors, (1686), 775 states have call predecessors, (1686), 902 states have return successors, (3999), 1811 states have call predecessors, (3999), 1684 states have call successors, (3999) [2023-12-16 05:56:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24972 states to 24972 states and 40557 transitions. [2023-12-16 05:56:47,800 INFO L78 Accepts]: Start accepts. Automaton has 24972 states and 40557 transitions. Word has length 101 [2023-12-16 05:56:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:47,801 INFO L495 AbstractCegarLoop]: Abstraction has 24972 states and 40557 transitions. [2023-12-16 05:56:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 24972 states and 40557 transitions. [2023-12-16 05:56:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:56:47,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:47,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:47,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 05:56:47,817 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:47,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 396161527, now seen corresponding path program 1 times [2023-12-16 05:56:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:47,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139283077] [2023-12-16 05:56:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:47,901 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 05:56:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:47,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139283077] [2023-12-16 05:56:47,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139283077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:47,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:56:47,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 05:56:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892446400] [2023-12-16 05:56:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:47,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 05:56:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:47,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 05:56:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 05:56:47,903 INFO L87 Difference]: Start difference. First operand 24972 states and 40557 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:50,941 INFO L93 Difference]: Finished difference Result 70926 states and 115014 transitions. [2023-12-16 05:56:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 05:56:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-12-16 05:56:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:51,085 INFO L225 Difference]: With dead ends: 70926 [2023-12-16 05:56:51,086 INFO L226 Difference]: Without dead ends: 45967 [2023-12-16 05:56:51,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:56:51,134 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1066 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:51,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 948 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 05:56:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45967 states. [2023-12-16 05:56:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45967 to 37212. [2023-12-16 05:56:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37212 states, 33289 states have (on average 1.5474781459340923) internal successors, (51514), 33548 states have internal predecessors, (51514), 2566 states have call successors, (2566), 1165 states have call predecessors, (2566), 1356 states have return successors, (5609), 2626 states have call predecessors, (5609), 2564 states have call successors, (5609) [2023-12-16 05:56:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37212 states to 37212 states and 59689 transitions. [2023-12-16 05:56:52,974 INFO L78 Accepts]: Start accepts. Automaton has 37212 states and 59689 transitions. Word has length 101 [2023-12-16 05:56:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:52,975 INFO L495 AbstractCegarLoop]: Abstraction has 37212 states and 59689 transitions. [2023-12-16 05:56:52,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 05:56:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 37212 states and 59689 transitions. [2023-12-16 05:56:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 05:56:53,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:53,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:53,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 05:56:53,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:53,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:53,142 INFO L85 PathProgramCache]: Analyzing trace with hash 428517535, now seen corresponding path program 1 times [2023-12-16 05:56:53,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:53,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896431597] [2023-12-16 05:56:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:56:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 05:56:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 05:56:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-16 05:56:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 05:56:53,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:56:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896431597] [2023-12-16 05:56:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896431597] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:56:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754640171] [2023-12-16 05:56:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:53,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:56:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:56:53,259 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 05:56:53,299 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 05:56:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:53,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 05:56:53,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:56:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 05:56:53,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:56:53,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754640171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:56:53,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:56:53,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 05:56:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644559238] [2023-12-16 05:56:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:56:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 05:56:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:56:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 05:56:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:53,517 INFO L87 Difference]: Start difference. First operand 37212 states and 59689 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 05:56:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:56:56,135 INFO L93 Difference]: Finished difference Result 111025 states and 179317 transitions. [2023-12-16 05:56:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 05:56:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-12-16 05:56:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:56:56,390 INFO L225 Difference]: With dead ends: 111025 [2023-12-16 05:56:56,390 INFO L226 Difference]: Without dead ends: 73826 [2023-12-16 05:56:56,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:56:56,463 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 286 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:56:56,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 592 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:56:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73826 states. [2023-12-16 05:56:59,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73826 to 73628. [2023-12-16 05:56:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73628 states, 65887 states have (on average 1.5442955362969932) internal successors, (101749), 66403 states have internal predecessors, (101749), 5028 states have call successors, (5028), 2329 states have call predecessors, (5028), 2712 states have return successors, (10989), 5023 states have call predecessors, (10989), 5026 states have call successors, (10989) [2023-12-16 05:56:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73628 states to 73628 states and 117766 transitions. [2023-12-16 05:56:59,484 INFO L78 Accepts]: Start accepts. Automaton has 73628 states and 117766 transitions. Word has length 163 [2023-12-16 05:56:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:56:59,484 INFO L495 AbstractCegarLoop]: Abstraction has 73628 states and 117766 transitions. [2023-12-16 05:56:59,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 05:56:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 73628 states and 117766 transitions. [2023-12-16 05:56:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 05:56:59,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:56:59,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:56:59,598 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 05:56:59,798 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,SelfDestructingSolverStorable14 [2023-12-16 05:56:59,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:56:59,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:56:59,799 INFO L85 PathProgramCache]: Analyzing trace with hash 304692223, now seen corresponding path program 1 times [2023-12-16 05:56:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:56:59,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091668794] [2023-12-16 05:56:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:56:59,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:56:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:56:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:56:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:56:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:56:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:56:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:57:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 05:57:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 05:57:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-16 05:57:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 05:57:00,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:57:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091668794] [2023-12-16 05:57:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091668794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:57:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056301329] [2023-12-16 05:57:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:57:00,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:57:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:57:00,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:57:00,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 05:57:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:00,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 05:57:00,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:57:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 05:57:00,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:57:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056301329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:57:00,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:57:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 05:57:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421661342] [2023-12-16 05:57:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:57:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 05:57:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:57:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 05:57:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:57:00,328 INFO L87 Difference]: Start difference. First operand 73628 states and 117766 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 05:57:05,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:57:05,063 INFO L93 Difference]: Finished difference Result 219305 states and 353104 transitions. [2023-12-16 05:57:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 05:57:05,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-12-16 05:57:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:57:05,784 INFO L225 Difference]: With dead ends: 219305 [2023-12-16 05:57:05,785 INFO L226 Difference]: Without dead ends: 145690 [2023-12-16 05:57:05,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:57:05,903 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 281 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:57:05,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 592 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 05:57:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145690 states. [2023-12-16 05:57:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145690 to 145298. [2023-12-16 05:57:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145298 states, 130211 states have (on average 1.5418436230426) internal successors, (200765), 131241 states have internal predecessors, (200765), 9662 states have call successors, (9662), 4657 states have call predecessors, (9662), 5424 states have return successors, (21459), 9527 states have call predecessors, (21459), 9660 states have call successors, (21459) [2023-12-16 05:57:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145298 states to 145298 states and 231886 transitions. [2023-12-16 05:57:11,781 INFO L78 Accepts]: Start accepts. Automaton has 145298 states and 231886 transitions. Word has length 163 [2023-12-16 05:57:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:57:11,781 INFO L495 AbstractCegarLoop]: Abstraction has 145298 states and 231886 transitions. [2023-12-16 05:57:11,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-16 05:57:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 145298 states and 231886 transitions. [2023-12-16 05:57:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-16 05:57:11,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:57:11,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:57:11,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 05:57:12,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 05:57:12,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:57:12,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:57:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 886312095, now seen corresponding path program 1 times [2023-12-16 05:57:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:57:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980655721] [2023-12-16 05:57:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:57:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:57:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:57:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 05:57:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-16 05:57:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:57:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:57:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 05:57:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-16 05:57:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-16 05:57:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 05:57:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:57:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980655721] [2023-12-16 05:57:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980655721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:57:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772036121] [2023-12-16 05:57:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:57:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:57:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:57:12,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 05:57:12,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 05:57:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:57:12,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 05:57:12,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:57:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 05:57:12,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:57:12,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772036121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:57:12,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:57:12,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-16 05:57:12,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102423474] [2023-12-16 05:57:12,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:57:12,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 05:57:12,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:57:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 05:57:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:57:12,553 INFO L87 Difference]: Start difference. First operand 145298 states and 231886 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Received shutdown request... [2023-12-16 05:57:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 05:57:20,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:57:20,613 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 225 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:57:20,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 504 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:57:20,614 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 05:57:20,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 05:57:20,644 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 05:57:20,644 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 05:57:20,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:57:20,821 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (145298states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (399826 states constructed, input type IntersectNwa). [2023-12-16 05:57:20,824 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:57:20,826 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 05:57:20,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:57:20 BoogieIcfgContainer [2023-12-16 05:57:20,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 05:57:20,828 INFO L158 Benchmark]: Toolchain (without parser) took 57438.68ms. Allocated memory was 266.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 216.2MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-16 05:57:20,828 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 05:57:20,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.49ms. Allocated memory is still 266.3MB. Free memory was 216.2MB in the beginning and 198.1MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 05:57:20,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.87ms. Allocated memory is still 266.3MB. Free memory was 198.1MB in the beginning and 195.2MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 05:57:20,828 INFO L158 Benchmark]: Boogie Preprocessor took 60.70ms. Allocated memory is still 266.3MB. Free memory was 195.2MB in the beginning and 191.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 05:57:20,828 INFO L158 Benchmark]: RCFGBuilder took 580.53ms. Allocated memory is still 266.3MB. Free memory was 191.4MB in the beginning and 223.1MB in the end (delta: -31.7MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-16 05:57:20,829 INFO L158 Benchmark]: TraceAbstraction took 56457.68ms. Allocated memory was 266.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 222.1MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2023-12-16 05:57:20,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 288.49ms. Allocated memory is still 266.3MB. Free memory was 216.2MB in the beginning and 198.1MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.87ms. Allocated memory is still 266.3MB. Free memory was 198.1MB in the beginning and 195.2MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.70ms. Allocated memory is still 266.3MB. Free memory was 195.2MB in the beginning and 191.4MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 580.53ms. Allocated memory is still 266.3MB. Free memory was 191.4MB in the beginning and 223.1MB in the end (delta: -31.7MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 56457.68ms. Allocated memory was 266.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 222.1MB in the beginning and 5.7GB in the end (delta: -5.5GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 20]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 20). Cancelled while NwaCegarLoop was constructing difference of abstraction (145298states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (399826 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.4s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 37.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12700 SdHoareTripleChecker+Valid, 13.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12477 mSDsluCounter, 14082 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9945 mSDsCounter, 1003 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21213 IncrementalHoareTripleChecker+Invalid, 22216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1003 mSolverCounterUnsat, 4137 mSDtfsCounter, 21213 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 896 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145298occurred in iteration=16, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 32712 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2392 NumberOfCodeBlocks, 2392 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2372 ConstructedInterpolants, 0 QuantifiedInterpolants, 5648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2046 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 186/288 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