/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/combinations/Problem05_label42+token_ring.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:20:36,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:20:36,781 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:20:36,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:20:36,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:20:36,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:20:36,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:20:36,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:20:36,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:20:36,818 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:20:36,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:20:36,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:20:36,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:20:36,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:20:36,820 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:20:36,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:20:36,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:20:36,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:20:36,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:20:36,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:20:36,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:20:36,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:20:36,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:20:36,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:20:36,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:20:36,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:20:36,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:20:36,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:20:36,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:20:36,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:20:36,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:20:36,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:20:36,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:20:36,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:20:36,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:20:36,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:20:36,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:20:36,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:20:37,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:20:37,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:20:37,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:20:37,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:20:37,020 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:20:37,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.08.cil-2.c [2023-12-20 11:20:37,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:20:38,412 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:20:38,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.08.cil-2.c [2023-12-20 11:20:38,456 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/705d7dee6/6f8d99fae6a545ef90d6bf3b215ab0c8/FLAGb65a2bd85 [2023-12-20 11:20:38,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/705d7dee6/6f8d99fae6a545ef90d6bf3b215ab0c8 [2023-12-20 11:20:38,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:20:38,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:20:38,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:20:38,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:20:38,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:20:38,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:20:38" (1/1) ... [2023-12-20 11:20:38,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf90412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:38, skipping insertion in model container [2023-12-20 11:20:38,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:20:38" (1/1) ... [2023-12-20 11:20:38,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:20:39,729 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.08.cil-2.c[378560,378573] [2023-12-20 11:20:39,756 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.08.cil-2.c[383339,383352] [2023-12-20 11:20:39,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:20:39,923 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:20:40,502 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.08.cil-2.c[378560,378573] [2023-12-20 11:20:40,507 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.08.cil-2.c[383339,383352] [2023-12-20 11:20:40,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:20:40,561 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:20:40,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40 WrapperNode [2023-12-20 11:20:40,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:20:40,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:20:40,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:20:40,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:20:40,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:40,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:40,890 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12999 [2023-12-20 11:20:40,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:20:40,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:20:40,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:20:40,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:20:40,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:40,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:40,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,010 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 11:20:41,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:20:41,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:20:41,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:20:41,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:20:41,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (1/1) ... [2023-12-20 11:20:41,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:20:41,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:20:41,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 11:20:41,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 11:20:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:20:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:20:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:20:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:20:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:20:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:20:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:20:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:20:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:20:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:20:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:20:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:20:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:20:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:20:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:20:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:20:41,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:20:41,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:20:41,714 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:20:41,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:20:46,801 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:20:46,885 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:20:46,885 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-20 11:20:46,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:20:46 BoogieIcfgContainer [2023-12-20 11:20:46,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:20:46,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:20:46,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:20:46,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:20:46,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:20:38" (1/3) ... [2023-12-20 11:20:46,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9168e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:20:46, skipping insertion in model container [2023-12-20 11:20:46,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:20:40" (2/3) ... [2023-12-20 11:20:46,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a9168e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:20:46, skipping insertion in model container [2023-12-20 11:20:46,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:20:46" (3/3) ... [2023-12-20 11:20:46,893 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.08.cil-2.c [2023-12-20 11:20:46,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:20:46,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:20:46,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:20:46,985 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;@4cdde311, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:20:46,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:20:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 2387 states, 2353 states have (on average 1.87972800679983) internal successors, (4423), 2358 states have internal predecessors, (4423), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 11:20:47,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:47,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:47,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:47,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:47,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -344256000, now seen corresponding path program 1 times [2023-12-20 11:20:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030409549] [2023-12-20 11:20:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:47,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:47,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030409549] [2023-12-20 11:20:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030409549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:47,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:47,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 11:20:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241229423] [2023-12-20 11:20:47,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:47,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 11:20:47,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 11:20:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 11:20:47,476 INFO L87 Difference]: Start difference. First operand has 2387 states, 2353 states have (on average 1.87972800679983) internal successors, (4423), 2358 states have internal predecessors, (4423), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-12-20 11:20:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:20:48,584 INFO L93 Difference]: Finished difference Result 4859 states and 9094 transitions. [2023-12-20 11:20:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 11:20:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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 122 [2023-12-20 11:20:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:20:48,627 INFO L225 Difference]: With dead ends: 4859 [2023-12-20 11:20:48,627 INFO L226 Difference]: Without dead ends: 2472 [2023-12-20 11:20:48,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 11:20:48,646 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 709 mSDsluCounter, 12134 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 16326 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:20:48,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 16326 Invalid, 811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:20:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2023-12-20 11:20:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2382. [2023-12-20 11:20:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2350 states have (on average 1.8429787234042554) internal successors, (4331), 2353 states have internal predecessors, (4331), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-20 11:20:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4377 transitions. [2023-12-20 11:20:48,729 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4377 transitions. Word has length 122 [2023-12-20 11:20:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:20:48,729 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 4377 transitions. [2023-12-20 11:20:48,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-12-20 11:20:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4377 transitions. [2023-12-20 11:20:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:48,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:48,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:20:48,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:48,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2021779070, now seen corresponding path program 1 times [2023-12-20 11:20:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952205074] [2023-12-20 11:20:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:49,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:49,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952205074] [2023-12-20 11:20:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952205074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:49,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:49,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:20:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036054992] [2023-12-20 11:20:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:49,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:20:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:20:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:20:49,014 INFO L87 Difference]: Start difference. First operand 2382 states and 4377 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-12-20 11:20:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:20:50,770 INFO L93 Difference]: Finished difference Result 3067 states and 5511 transitions. [2023-12-20 11:20:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:20:50,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 122 [2023-12-20 11:20:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:20:50,781 INFO L225 Difference]: With dead ends: 3067 [2023-12-20 11:20:50,781 INFO L226 Difference]: Without dead ends: 2820 [2023-12-20 11:20:50,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 11:20:50,784 INFO L413 NwaCegarLoop]: 4165 mSDtfsCounter, 5014 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 16648 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:20:50,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 16648 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 11:20:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2023-12-20 11:20:50,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2639. [2023-12-20 11:20:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2583 states have (on average 1.8246225319396052) internal successors, (4713), 2587 states have internal predecessors, (4713), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-12-20 11:20:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 4796 transitions. [2023-12-20 11:20:50,847 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 4796 transitions. Word has length 122 [2023-12-20 11:20:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:20:50,848 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 4796 transitions. [2023-12-20 11:20:50,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-12-20 11:20:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 4796 transitions. [2023-12-20 11:20:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:50,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:50,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:20:50,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:50,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1745853758, now seen corresponding path program 1 times [2023-12-20 11:20:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075777175] [2023-12-20 11:20:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:51,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:51,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:51,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075777175] [2023-12-20 11:20:51,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075777175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:51,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:51,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:20:51,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088042333] [2023-12-20 11:20:51,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:51,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:20:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:20:51,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:20:51,062 INFO L87 Difference]: Start difference. First operand 2639 states and 4796 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:53,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:20:53,466 INFO L93 Difference]: Finished difference Result 3682 states and 6521 transitions. [2023-12-20 11:20:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:20:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:20:53,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:20:53,476 INFO L225 Difference]: With dead ends: 3682 [2023-12-20 11:20:53,476 INFO L226 Difference]: Without dead ends: 3178 [2023-12-20 11:20:53,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:20:53,478 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 5033 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5048 SdHoareTripleChecker+Valid, 21346 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:20:53,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5048 Valid, 21346 Invalid, 2710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 11:20:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2023-12-20 11:20:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2877. [2023-12-20 11:20:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2797 states have (on average 1.8080085806220951) internal successors, (5057), 2802 states have internal predecessors, (5057), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-12-20 11:20:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 5176 transitions. [2023-12-20 11:20:53,548 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 5176 transitions. Word has length 122 [2023-12-20 11:20:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:20:53,548 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 5176 transitions. [2023-12-20 11:20:53,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 5176 transitions. [2023-12-20 11:20:53,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:53,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:53,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:20:53,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1159819524, now seen corresponding path program 1 times [2023-12-20 11:20:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376497687] [2023-12-20 11:20:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:53,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:53,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376497687] [2023-12-20 11:20:53,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376497687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:53,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:53,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:20:53,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598709914] [2023-12-20 11:20:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:20:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:20:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:20:53,734 INFO L87 Difference]: Start difference. First operand 2877 states and 5176 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:20:55,810 INFO L93 Difference]: Finished difference Result 4583 states and 7993 transitions. [2023-12-20 11:20:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:20:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:20:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:20:55,824 INFO L225 Difference]: With dead ends: 4583 [2023-12-20 11:20:55,824 INFO L226 Difference]: Without dead ends: 3841 [2023-12-20 11:20:55,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:20:55,833 INFO L413 NwaCegarLoop]: 4174 mSDtfsCounter, 5113 mSDsluCounter, 16625 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 20799 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:20:55,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 20799 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:20:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2023-12-20 11:20:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3354. [2023-12-20 11:20:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.7811531308121513) internal successors, (5746), 3233 states have internal predecessors, (5746), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 11:20:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5941 transitions. [2023-12-20 11:20:55,938 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5941 transitions. Word has length 122 [2023-12-20 11:20:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:20:55,938 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5941 transitions. [2023-12-20 11:20:55,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5941 transitions. [2023-12-20 11:20:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:55,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:55,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:55,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:20:55,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:55,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1101753726, now seen corresponding path program 1 times [2023-12-20 11:20:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399464451] [2023-12-20 11:20:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399464451] [2023-12-20 11:20:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399464451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:20:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759125742] [2023-12-20 11:20:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:56,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:20:56,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:20:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:20:56,177 INFO L87 Difference]: Start difference. First operand 3354 states and 5941 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:20:57,272 INFO L93 Difference]: Finished difference Result 5048 states and 8749 transitions. [2023-12-20 11:20:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:20:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:20:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:20:57,289 INFO L225 Difference]: With dead ends: 5048 [2023-12-20 11:20:57,290 INFO L226 Difference]: Without dead ends: 3829 [2023-12-20 11:20:57,295 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 [2023-12-20 11:20:57,296 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4742 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 20576 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:20:57,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 20576 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:20:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2023-12-20 11:20:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3354. [2023-12-20 11:20:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.7796032238065715) internal successors, (5741), 3233 states have internal predecessors, (5741), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 11:20:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5936 transitions. [2023-12-20 11:20:57,389 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5936 transitions. Word has length 122 [2023-12-20 11:20:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:20:57,389 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5936 transitions. [2023-12-20 11:20:57,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5936 transitions. [2023-12-20 11:20:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:57,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:57,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:57,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:20:57,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:57,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash -764954948, now seen corresponding path program 1 times [2023-12-20 11:20:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:57,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332379993] [2023-12-20 11:20:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:57,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:57,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:57,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:57,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332379993] [2023-12-20 11:20:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332379993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:57,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:57,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:20:57,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333929810] [2023-12-20 11:20:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:20:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:20:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:20:57,542 INFO L87 Difference]: Start difference. First operand 3354 states and 5936 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:20:58,422 INFO L93 Difference]: Finished difference Result 5037 states and 8713 transitions. [2023-12-20 11:20:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:20:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:20:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:20:58,434 INFO L225 Difference]: With dead ends: 5037 [2023-12-20 11:20:58,434 INFO L226 Difference]: Without dead ends: 3818 [2023-12-20 11:20:58,437 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 [2023-12-20 11:20:58,438 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4848 mSDsluCounter, 12339 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 16491 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:20:58,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4864 Valid, 16491 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:20:58,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2023-12-20 11:20:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3354. [2023-12-20 11:20:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3226 states have (on average 1.778053316800992) internal successors, (5736), 3233 states have internal predecessors, (5736), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-12-20 11:20:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5931 transitions. [2023-12-20 11:20:58,522 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5931 transitions. Word has length 122 [2023-12-20 11:20:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:20:58,522 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5931 transitions. [2023-12-20 11:20:58,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:20:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5931 transitions. [2023-12-20 11:20:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:20:58,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:20:58,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:20:58,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:20:58,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:20:58,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:20:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1132541818, now seen corresponding path program 1 times [2023-12-20 11:20:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:20:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787829247] [2023-12-20 11:20:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:20:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:20:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:20:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:20:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:20:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:20:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:20:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:20:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:20:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:20:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787829247] [2023-12-20 11:20:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787829247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:20:58,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:20:58,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:20:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183545467] [2023-12-20 11:20:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:20:58,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:20:58,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:20:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:20:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:20:58,688 INFO L87 Difference]: Start difference. First operand 3354 states and 5931 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:00,790 INFO L93 Difference]: Finished difference Result 6295 states and 10728 transitions. [2023-12-20 11:21:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:21:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:00,806 INFO L225 Difference]: With dead ends: 6295 [2023-12-20 11:21:00,806 INFO L226 Difference]: Without dead ends: 5076 [2023-12-20 11:21:00,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:21:00,810 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 5016 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5031 SdHoareTripleChecker+Valid, 21344 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:00,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5031 Valid, 21344 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2574 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:21:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2023-12-20 11:21:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 4323. [2023-12-20 11:21:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4099 states have (on average 1.738716760185411) internal successors, (7127), 4110 states have internal predecessors, (7127), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-20 11:21:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 7480 transitions. [2023-12-20 11:21:00,904 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 7480 transitions. Word has length 122 [2023-12-20 11:21:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:00,904 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 7480 transitions. [2023-12-20 11:21:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 7480 transitions. [2023-12-20 11:21:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:00,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:00,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:00,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:21:00,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:00,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:00,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2131384580, now seen corresponding path program 1 times [2023-12-20 11:21:00,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642345829] [2023-12-20 11:21:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:01,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642345829] [2023-12-20 11:21:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642345829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:01,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:01,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:01,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102913265] [2023-12-20 11:21:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:01,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:01,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:01,044 INFO L87 Difference]: Start difference. First operand 4323 states and 7480 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:02,118 INFO L93 Difference]: Finished difference Result 7271 states and 12318 transitions. [2023-12-20 11:21:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:21:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:02,131 INFO L225 Difference]: With dead ends: 7271 [2023-12-20 11:21:02,131 INFO L226 Difference]: Without dead ends: 5083 [2023-12-20 11:21:02,137 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 [2023-12-20 11:21:02,138 INFO L413 NwaCegarLoop]: 4152 mSDtfsCounter, 4738 mSDsluCounter, 16424 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 20576 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:02,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 20576 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:21:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5083 states. [2023-12-20 11:21:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5083 to 4323. [2023-12-20 11:21:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4099 states have (on average 1.7365211027079777) internal successors, (7118), 4110 states have internal predecessors, (7118), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-12-20 11:21:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 7471 transitions. [2023-12-20 11:21:02,231 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 7471 transitions. Word has length 122 [2023-12-20 11:21:02,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:02,231 INFO L495 AbstractCegarLoop]: Abstraction has 4323 states and 7471 transitions. [2023-12-20 11:21:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 7471 transitions. [2023-12-20 11:21:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:02,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:02,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:02,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:21:02,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:02,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash 257179450, now seen corresponding path program 1 times [2023-12-20 11:21:02,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:02,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122833350] [2023-12-20 11:21:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:02,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:02,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122833350] [2023-12-20 11:21:02,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122833350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:02,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:02,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:02,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808866281] [2023-12-20 11:21:02,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:02,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:02,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:02,382 INFO L87 Difference]: Start difference. First operand 4323 states and 7471 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:04,550 INFO L93 Difference]: Finished difference Result 9746 states and 16269 transitions. [2023-12-20 11:21:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:21:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:04,569 INFO L225 Difference]: With dead ends: 9746 [2023-12-20 11:21:04,570 INFO L226 Difference]: Without dead ends: 7558 [2023-12-20 11:21:04,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 11:21:04,577 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 5008 mSDsluCounter, 17024 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5023 SdHoareTripleChecker+Valid, 21344 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:04,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5023 Valid, 21344 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 11:21:04,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7558 states. [2023-12-20 11:21:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 6271. [2023-12-20 11:21:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 5855 states have (on average 1.690862510674637) internal successors, (9900), 5874 states have internal predecessors, (9900), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-12-20 11:21:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 10587 transitions. [2023-12-20 11:21:04,730 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 10587 transitions. Word has length 122 [2023-12-20 11:21:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:04,730 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 10587 transitions. [2023-12-20 11:21:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 10587 transitions. [2023-12-20 11:21:04,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:04,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:04,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:04,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 11:21:04,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:04,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1858250556, now seen corresponding path program 1 times [2023-12-20 11:21:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:04,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835186898] [2023-12-20 11:21:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:04,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:04,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835186898] [2023-12-20 11:21:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835186898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:04,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:04,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017993919] [2023-12-20 11:21:04,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:04,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:04,871 INFO L87 Difference]: Start difference. First operand 6271 states and 10587 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:07,231 INFO L93 Difference]: Finished difference Result 18328 states and 30157 transitions. [2023-12-20 11:21:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:21:07,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:07,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:07,269 INFO L225 Difference]: With dead ends: 18328 [2023-12-20 11:21:07,269 INFO L226 Difference]: Without dead ends: 14192 [2023-12-20 11:21:07,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:21:07,286 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5301 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5325 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:07,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5325 Valid, 21337 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:21:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14192 states. [2023-12-20 11:21:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 10148. [2023-12-20 11:21:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10148 states, 9364 states have (on average 1.6516445963263562) internal successors, (15466), 9399 states have internal predecessors, (15466), 552 states have call successors, (552), 199 states have call predecessors, (552), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2023-12-20 11:21:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 16843 transitions. [2023-12-20 11:21:07,597 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 16843 transitions. Word has length 122 [2023-12-20 11:21:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:07,597 INFO L495 AbstractCegarLoop]: Abstraction has 10148 states and 16843 transitions. [2023-12-20 11:21:07,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 16843 transitions. [2023-12-20 11:21:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:07,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:07,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 11:21:07,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:07,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash 801519354, now seen corresponding path program 1 times [2023-12-20 11:21:07,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:07,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174638086] [2023-12-20 11:21:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:07,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174638086] [2023-12-20 11:21:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174638086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348498517] [2023-12-20 11:21:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:07,750 INFO L87 Difference]: Start difference. First operand 10148 states and 16843 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:10,560 INFO L93 Difference]: Finished difference Result 33379 states and 54727 transitions. [2023-12-20 11:21:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:21:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:10,618 INFO L225 Difference]: With dead ends: 33379 [2023-12-20 11:21:10,618 INFO L226 Difference]: Without dead ends: 25366 [2023-12-20 11:21:10,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:21:10,639 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 5136 mSDsluCounter, 16647 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 20847 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:10,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 20847 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 11:21:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25366 states. [2023-12-20 11:21:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25366 to 17581. [2023-12-20 11:21:11,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17581 states, 16077 states have (on average 1.620451576786714) internal successors, (26052), 16144 states have internal predecessors, (26052), 1048 states have call successors, (1048), 391 states have call predecessors, (1048), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2023-12-20 11:21:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17581 states to 17581 states and 28939 transitions. [2023-12-20 11:21:11,286 INFO L78 Accepts]: Start accepts. Automaton has 17581 states and 28939 transitions. Word has length 122 [2023-12-20 11:21:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:11,286 INFO L495 AbstractCegarLoop]: Abstraction has 17581 states and 28939 transitions. [2023-12-20 11:21:11,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 17581 states and 28939 transitions. [2023-12-20 11:21:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:11,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:11,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 11:21:11,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:11,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2142062724, now seen corresponding path program 1 times [2023-12-20 11:21:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962914712] [2023-12-20 11:21:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962914712] [2023-12-20 11:21:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962914712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:11,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:11,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687559580] [2023-12-20 11:21:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:11,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:11,431 INFO L87 Difference]: Start difference. First operand 17581 states and 28939 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:14,115 INFO L93 Difference]: Finished difference Result 62074 states and 101957 transitions. [2023-12-20 11:21:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:21:14,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:14,236 INFO L225 Difference]: With dead ends: 62074 [2023-12-20 11:21:14,236 INFO L226 Difference]: Without dead ends: 46628 [2023-12-20 11:21:14,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:21:14,269 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5235 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5259 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:14,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5259 Valid, 21337 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 11:21:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46628 states. [2023-12-20 11:21:15,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46628 to 32766. [2023-12-20 11:21:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32766 states, 29854 states have (on average 1.603202250954646) internal successors, (47862), 29985 states have internal predecessors, (47862), 2008 states have call successors, (2008), 775 states have call predecessors, (2008), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2023-12-20 11:21:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32766 states to 32766 states and 54191 transitions. [2023-12-20 11:21:15,497 INFO L78 Accepts]: Start accepts. Automaton has 32766 states and 54191 transitions. Word has length 122 [2023-12-20 11:21:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:15,497 INFO L495 AbstractCegarLoop]: Abstraction has 32766 states and 54191 transitions. [2023-12-20 11:21:15,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 32766 states and 54191 transitions. [2023-12-20 11:21:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:15,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:15,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:15,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 11:21:15,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:15,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 533929658, now seen corresponding path program 1 times [2023-12-20 11:21:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:15,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699723975] [2023-12-20 11:21:15,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:15,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:15,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:15,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:15,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699723975] [2023-12-20 11:21:15,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699723975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:15,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:15,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:15,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43726584] [2023-12-20 11:21:15,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:15,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:15,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:15,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:15,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:15,658 INFO L87 Difference]: Start difference. First operand 32766 states and 54191 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:19,340 INFO L93 Difference]: Finished difference Result 117735 states and 195799 transitions. [2023-12-20 11:21:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:21:19,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:19,830 INFO L225 Difference]: With dead ends: 117735 [2023-12-20 11:21:19,830 INFO L226 Difference]: Without dead ends: 87104 [2023-12-20 11:21:19,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:21:19,901 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5044 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5058 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:19,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5058 Valid, 21337 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 11:21:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87104 states. [2023-12-20 11:21:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87104 to 63264. [2023-12-20 11:21:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63264 states, 57600 states have (on average 1.5948958333333334) internal successors, (91866), 57859 states have internal predecessors, (91866), 3864 states have call successors, (3864), 1543 states have call predecessors, (3864), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2023-12-20 11:21:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63264 states to 63264 states and 106409 transitions. [2023-12-20 11:21:22,410 INFO L78 Accepts]: Start accepts. Automaton has 63264 states and 106409 transitions. Word has length 122 [2023-12-20 11:21:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:22,411 INFO L495 AbstractCegarLoop]: Abstraction has 63264 states and 106409 transitions. [2023-12-20 11:21:22,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 63264 states and 106409 transitions. [2023-12-20 11:21:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:22,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:22,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:22,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 11:21:22,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:22,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash 505429368, now seen corresponding path program 1 times [2023-12-20 11:21:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796862127] [2023-12-20 11:21:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:22,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:22,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:22,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796862127] [2023-12-20 11:21:22,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796862127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:22,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:22,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913496739] [2023-12-20 11:21:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:22,576 INFO L87 Difference]: Start difference. First operand 63264 states and 106409 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:28,321 INFO L93 Difference]: Finished difference Result 228935 states and 388815 transitions. [2023-12-20 11:21:28,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:21:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:28,895 INFO L225 Difference]: With dead ends: 228935 [2023-12-20 11:21:28,895 INFO L226 Difference]: Without dead ends: 167806 [2023-12-20 11:21:29,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 11:21:29,046 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5124 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:29,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5148 Valid, 21337 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:21:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167806 states. [2023-12-20 11:21:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167806 to 124257. [2023-12-20 11:21:34,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124257 states, 113217 states have (on average 1.5909624879655881) internal successors, (180124), 113732 states have internal predecessors, (180124), 7448 states have call successors, (7448), 3079 states have call predecessors, (7448), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2023-12-20 11:21:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124257 states to 124257 states and 215213 transitions. [2023-12-20 11:21:34,980 INFO L78 Accepts]: Start accepts. Automaton has 124257 states and 215213 transitions. Word has length 122 [2023-12-20 11:21:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:34,980 INFO L495 AbstractCegarLoop]: Abstraction has 124257 states and 215213 transitions. [2023-12-20 11:21:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 124257 states and 215213 transitions. [2023-12-20 11:21:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:35,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:35,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:35,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 11:21:35,040 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:35,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1435152646, now seen corresponding path program 1 times [2023-12-20 11:21:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:35,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924366529] [2023-12-20 11:21:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:35,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:35,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:35,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924366529] [2023-12-20 11:21:35,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924366529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:35,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:35,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:35,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267046094] [2023-12-20 11:21:35,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:35,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:35,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:35,165 INFO L87 Difference]: Start difference. First operand 124257 states and 215213 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:21:44,788 INFO L93 Difference]: Finished difference Result 447494 states and 785685 transitions. [2023-12-20 11:21:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:21:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:21:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:21:46,255 INFO L225 Difference]: With dead ends: 447494 [2023-12-20 11:21:46,256 INFO L226 Difference]: Without dead ends: 325372 [2023-12-20 11:21:46,500 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 [2023-12-20 11:21:46,500 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5024 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:21:46,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5038 Valid, 21337 Invalid, 2713 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [61 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 11:21:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325372 states. [2023-12-20 11:21:55,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325372 to 246242. [2023-12-20 11:21:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246242 states, 224706 states have (on average 1.5894101626124804) internal successors, (357150), 225733 states have internal predecessors, (357150), 14360 states have call successors, (14360), 6151 states have call predecessors, (14360), 7174 states have return successors, (74431), 15381 states have call predecessors, (74431), 14358 states have call successors, (74431) [2023-12-20 11:21:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246242 states to 246242 states and 445941 transitions. [2023-12-20 11:21:57,578 INFO L78 Accepts]: Start accepts. Automaton has 246242 states and 445941 transitions. Word has length 122 [2023-12-20 11:21:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:21:57,578 INFO L495 AbstractCegarLoop]: Abstraction has 246242 states and 445941 transitions. [2023-12-20 11:21:57,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:21:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 246242 states and 445941 transitions. [2023-12-20 11:21:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-20 11:21:57,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:21:57,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:21:57,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 11:21:57,718 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:21:57,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:21:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash 441910584, now seen corresponding path program 1 times [2023-12-20 11:21:57,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:21:57,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227412608] [2023-12-20 11:21:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:21:57,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:21:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:21:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-20 11:21:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 11:21:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 11:21:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 11:21:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:21:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:21:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:21:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227412608] [2023-12-20 11:21:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227412608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:21:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:21:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:21:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824487356] [2023-12-20 11:21:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:21:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:21:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:21:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:21:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:21:58,026 INFO L87 Difference]: Start difference. First operand 246242 states and 445941 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-12-20 11:22:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:22:14,869 INFO L93 Difference]: Finished difference Result 876933 states and 1618603 transitions. [2023-12-20 11:22:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:22:14,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 122 [2023-12-20 11:22:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:22:18,046 INFO L225 Difference]: With dead ends: 876933 [2023-12-20 11:22:18,046 INFO L226 Difference]: Without dead ends: 632826 [2023-12-20 11:22:18,920 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 [2023-12-20 11:22:18,921 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 5052 mSDsluCounter, 17019 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 21337 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:22:18,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5076 Valid, 21337 Invalid, 2478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 11:22:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632826 states.