/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 02:42:36,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 02:42:36,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 02:42:36,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 02:42:36,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 02:42:36,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 02:42:36,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 02:42:36,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 02:42:36,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 02:42:36,677 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 02:42:36,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 02:42:36,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 02:42:36,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 02:42:36,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 02:42:36,678 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 02:42:36,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 02:42:36,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 02:42:36,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 02:42:36,680 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 02:42:36,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 02:42:36,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 02:42:36,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 02:42:36,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 02:42:36,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 02:42:36,684 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 02:42:36,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 02:42:36,685 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 02:42:36,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 02:42:36,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 02:42:36,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 02:42:36,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 02:42:36,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 02:42:36,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 02:42:36,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 02:42:36,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:42:36,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 02:42:36,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 02:42:36,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 02:42:36,689 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 02:42:36,689 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:36,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 02:42:36,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 02:42:36,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 02:42:36,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 02:42:36,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:36,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 02:42:36,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 02:42:36,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 02:42:36,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 02:42:36,924 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 02:42:36,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2024-11-03 02:42:38,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 02:42:38,513 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 02:42:38,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2024-11-03 02:42:38,520 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9088c350/688e9ca3e91f4bc3bff212569c7b8def/FLAG02c11d97d [2024-11-03 02:42:38,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9088c350/688e9ca3e91f4bc3bff212569c7b8def [2024-11-03 02:42:38,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 02:42:38,535 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 02:42:38,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 02:42:38,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 02:42:38,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 02:42:38,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61fd1de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38, skipping insertion in model container [2024-11-03 02:42:38,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,562 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 02:42:38,742 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c[1929,1942] [2024-11-03 02:42:38,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:42:38,757 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 02:42:38,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c[1929,1942] [2024-11-03 02:42:38,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 02:42:38,807 INFO L204 MainTranslator]: Completed translation [2024-11-03 02:42:38,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38 WrapperNode [2024-11-03 02:42:38,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 02:42:38,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 02:42:38,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 02:42:38,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 02:42:38,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,854 INFO L138 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2024-11-03 02:42:38,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 02:42:38,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 02:42:38,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 02:42:38,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 02:42:38,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,897 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-03 02:42:38,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 02:42:38,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 02:42:38,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 02:42:38,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 02:42:38,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (1/1) ... [2024-11-03 02:42:38,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 02:42:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 02:42:38,967 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) [2024-11-03 02:42:38,974 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 [2024-11-03 02:42:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 02:42:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 02:42:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 02:42:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-03 02:42:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-03 02:42:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 02:42:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-03 02:42:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 02:42:39,103 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 02:42:39,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 02:42:40,067 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-03 02:42:40,068 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 02:42:40,080 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 02:42:40,081 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-03 02:42:40,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:42:40 BoogieIcfgContainer [2024-11-03 02:42:40,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 02:42:40,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 02:42:40,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 02:42:40,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 02:42:40,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:42:38" (1/3) ... [2024-11-03 02:42:40,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3e558f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:42:40, skipping insertion in model container [2024-11-03 02:42:40,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:42:38" (2/3) ... [2024-11-03 02:42:40,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3e558f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:42:40, skipping insertion in model container [2024-11-03 02:42:40,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:42:40" (3/3) ... [2024-11-03 02:42:40,090 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2024-11-03 02:42:40,104 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 02:42:40,104 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 02:42:40,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 02:42:40,160 INFO L333 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, 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;@5524935e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 02:42:40,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 02:42:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-03 02:42:40,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:42:40,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:42:40,173 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:42:40,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:42:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2024-11-03 02:42:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:42:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454139966] [2024-11-03 02:42:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:42:40,191 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:40,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:42:40,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:42:40,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 02:42:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:42:40,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 02:42:40,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:42:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:40,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:42:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:40,412 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:42:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454139966] [2024-11-03 02:42:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1454139966] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:42:40,413 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:42:40,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 02:42:40,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255061200] [2024-11-03 02:42:40,419 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:42:40,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 02:42:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:42:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 02:42:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 02:42:40,447 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:42:40,464 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2024-11-03 02:42:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 02:42:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-03 02:42:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:42:40,473 INFO L225 Difference]: With dead ends: 64 [2024-11-03 02:42:40,473 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 02:42:40,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 02:42:40,482 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 02:42:40,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 02:42:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 02:42:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 02:42:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2024-11-03 02:42:40,518 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2024-11-03 02:42:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:42:40,518 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2024-11-03 02:42:40,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2024-11-03 02:42:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-03 02:42:40,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:42:40,521 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:42:40,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 02:42:40,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:40,722 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:42:40,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:42:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2024-11-03 02:42:40,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:42:40,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266183867] [2024-11-03 02:42:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:42:40,724 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:40,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:42:40,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:42:40,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 02:42:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:42:41,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 02:42:41,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:42:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:41,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:42:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:49,645 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:42:49,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266183867] [2024-11-03 02:42:49,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1266183867] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:42:49,646 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:42:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2024-11-03 02:42:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458868481] [2024-11-03 02:42:49,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:42:49,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 02:42:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:42:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 02:42:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:42:49,650 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:51,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 02:42:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:42:53,827 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2024-11-03 02:42:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 02:42:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-03 02:42:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:42:53,828 INFO L225 Difference]: With dead ends: 35 [2024-11-03 02:42:53,828 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 02:42:53,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-03 02:42:53,830 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 56 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:42:53,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 160 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-03 02:42:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 02:42:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 02:42:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-03 02:42:53,834 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 10 [2024-11-03 02:42:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:42:53,835 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-03 02:42:53,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-03 02:42:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-03 02:42:53,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:42:53,836 INFO L215 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] [2024-11-03 02:42:53,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 02:42:54,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:54,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:42:54,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:42:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash 591854048, now seen corresponding path program 1 times [2024-11-03 02:42:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:42:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991789108] [2024-11-03 02:42:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:42:54,039 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:54,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:42:54,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:42:54,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 02:42:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:42:54,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 02:42:54,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:42:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:54,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:42:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:54,251 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:42:54,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991789108] [2024-11-03 02:42:54,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1991789108] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 02:42:54,251 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 02:42:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 02:42:54,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404800783] [2024-11-03 02:42:54,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 02:42:54,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 02:42:54,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:42:54,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 02:42:54,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:42:54,253 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:42:54,350 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-11-03 02:42:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 02:42:54,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-03 02:42:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:42:54,352 INFO L225 Difference]: With dead ends: 46 [2024-11-03 02:42:54,352 INFO L226 Difference]: Without dead ends: 34 [2024-11-03 02:42:54,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 02:42:54,353 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 02:42:54,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 02:42:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-03 02:42:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-03 02:42:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-03 02:42:54,359 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 22 [2024-11-03 02:42:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:42:54,360 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-03 02:42:54,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-03 02:42:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-03 02:42:54,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:42:54,361 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:42:54,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 02:42:54,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:54,562 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:42:54,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:42:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1310880576, now seen corresponding path program 1 times [2024-11-03 02:42:54,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:42:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77982498] [2024-11-03 02:42:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:42:54,563 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:42:54,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:42:54,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 02:42:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:42:54,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 02:42:54,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:42:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:54,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:42:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:55,045 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:42:55,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77982498] [2024-11-03 02:42:55,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [77982498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:42:55,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:42:55,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 02:42:55,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034074906] [2024-11-03 02:42:55,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:42:55,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 02:42:55,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:42:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 02:42:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-03 02:42:55,051 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:42:55,325 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-11-03 02:42:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 02:42:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-03 02:42:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:42:55,328 INFO L225 Difference]: With dead ends: 58 [2024-11-03 02:42:55,328 INFO L226 Difference]: Without dead ends: 46 [2024-11-03 02:42:55,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-03 02:42:55,331 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 02:42:55,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 218 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 02:42:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-03 02:42:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-03 02:42:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-03 02:42:55,342 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 28 [2024-11-03 02:42:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:42:55,343 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-03 02:42:55,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-03 02:42:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-03 02:42:55,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:42:55,346 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:42:55,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 02:42:55,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:55,547 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:42:55,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:42:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1789251072, now seen corresponding path program 2 times [2024-11-03 02:42:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:42:55,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062198976] [2024-11-03 02:42:55,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:42:55,549 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:42:55,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:42:55,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 02:42:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:42:55,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 02:42:55,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:42:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:56,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:42:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:56,534 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:42:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062198976] [2024-11-03 02:42:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2062198976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:42:56,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:42:56,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 02:42:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316978006] [2024-11-03 02:42:56,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:42:56,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 02:42:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:42:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 02:42:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2024-11-03 02:42:56,536 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:42:57,076 INFO L93 Difference]: Finished difference Result 82 states and 112 transitions. [2024-11-03 02:42:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 02:42:57,077 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-03 02:42:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:42:57,078 INFO L225 Difference]: With dead ends: 82 [2024-11-03 02:42:57,079 INFO L226 Difference]: Without dead ends: 70 [2024-11-03 02:42:57,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2024-11-03 02:42:57,080 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 35 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 02:42:57,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 146 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 02:42:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-03 02:42:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-03 02:42:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2024-11-03 02:42:57,089 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 40 [2024-11-03 02:42:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:42:57,090 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2024-11-03 02:42:57,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:42:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2024-11-03 02:42:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-03 02:42:57,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:42:57,092 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:42:57,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 02:42:57,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:57,293 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:42:57,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:42:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1879450496, now seen corresponding path program 3 times [2024-11-03 02:42:57,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:42:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310773498] [2024-11-03 02:42:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:42:57,294 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:42:57,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:42:57,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:42:57,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 02:42:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:42:57,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 02:42:57,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:42:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:58,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 02:42:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:42:59,342 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 02:42:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310773498] [2024-11-03 02:42:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1310773498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 02:42:59,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 02:42:59,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-03 02:42:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678396591] [2024-11-03 02:42:59,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 02:42:59,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-03 02:42:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 02:42:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-03 02:42:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=611, Unknown=0, NotChecked=0, Total=992 [2024-11-03 02:42:59,345 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:43:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 02:43:01,099 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2024-11-03 02:43:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-03 02:43:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-03 02:43:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 02:43:01,101 INFO L225 Difference]: With dead ends: 115 [2024-11-03 02:43:01,101 INFO L226 Difference]: Without dead ends: 103 [2024-11-03 02:43:01,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=381, Invalid=611, Unknown=0, NotChecked=0, Total=992 [2024-11-03 02:43:01,103 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 82 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-03 02:43:01,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 293 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-03 02:43:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-03 02:43:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-03 02:43:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3137254901960784) internal successors, (134), 102 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:43:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 134 transitions. [2024-11-03 02:43:01,123 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 134 transitions. Word has length 64 [2024-11-03 02:43:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 02:43:01,123 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 134 transitions. [2024-11-03 02:43:01,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.375) internal successors, (108), 32 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 02:43:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 134 transitions. [2024-11-03 02:43:01,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-03 02:43:01,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 02:43:01,128 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 02:43:01,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 02:43:01,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 02:43:01,329 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 02:43:01,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 02:43:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1958023961, now seen corresponding path program 4 times [2024-11-03 02:43:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 02:43:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616987514] [2024-11-03 02:43:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 02:43:01,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 02:43:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 02:43:01,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 02:43:01,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 02:43:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 02:43:01,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-03 02:43:01,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 02:43:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 02:43:11,863 INFO L311 TraceCheckSpWp]: Computing backward predicates...