/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/hardness-nfm22/hardness_operatoramount_amount25_file-61.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:30:53,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:30:54,057 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 01:30:54,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:30:54,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:30:54,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:30:54,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:30:54,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:30:54,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:30:54,097 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:30:54,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:30:54,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:30:54,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:30:54,100 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:30:54,101 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:30:54,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:30:54,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:30:54,101 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:30:54,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:30:54,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:30:54,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:30:54,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:30:54,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:30:54,103 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:30:54,104 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:30:54,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:30:54,104 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:30:54,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:30:54,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:30:54,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:30:54,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:30:54,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:30:54,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:30:54,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:30:54,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:30:54,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:30:54,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:30:54,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:30:54,108 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:30:54,108 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:54,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:30:54,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:30:54,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:30:54,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:30:54,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:54,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:30:54,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:30:54,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:30:54,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:30:54,357 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:30:54,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-61.i [2024-11-03 01:30:55,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:30:55,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:30:55,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-61.i [2024-11-03 01:30:55,931 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6951d81f/237e7be5cb72462a820e8a533a35b1a2/FLAG7efc80b8c [2024-11-03 01:30:55,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6951d81f/237e7be5cb72462a820e8a533a35b1a2 [2024-11-03 01:30:55,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:30:55,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:30:55,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:30:55,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:30:55,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:30:55,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:30:55" (1/1) ... [2024-11-03 01:30:55,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a862d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:55, skipping insertion in model container [2024-11-03 01:30:55,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:30:55" (1/1) ... [2024-11-03 01:30:55,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:30:56,168 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-61.i[915,928] [2024-11-03 01:30:56,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:30:56,229 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:30:56,242 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-61.i[915,928] [2024-11-03 01:30:56,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:30:56,289 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:30:56,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56 WrapperNode [2024-11-03 01:30:56,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:30:56,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:30:56,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:30:56,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:30:56,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,338 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2024-11-03 01:30:56,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:30:56,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:30:56,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:30:56,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:30:56,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,370 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]. [2024-11-03 01:30:56,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,393 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:30:56,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:30:56,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:30:56,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:30:56,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (1/1) ... [2024-11-03 01:30:56,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:30:56,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:30:56,431 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 01:30:56,433 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 01:30:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:30:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:30:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:30:56,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:30:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:30:56,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:30:56,516 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:30:56,517 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:30:56,731 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-03 01:30:56,731 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:30:56,750 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:30:56,751 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:30:56,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:30:56 BoogieIcfgContainer [2024-11-03 01:30:56,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:30:56,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:30:56,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:30:56,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:30:56,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:30:55" (1/3) ... [2024-11-03 01:30:56,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b76370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:30:56, skipping insertion in model container [2024-11-03 01:30:56,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:30:56" (2/3) ... [2024-11-03 01:30:56,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b76370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:30:56, skipping insertion in model container [2024-11-03 01:30:56,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:30:56" (3/3) ... [2024-11-03 01:30:56,762 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-61.i [2024-11-03 01:30:56,775 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:30:56,775 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:30:56,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:30:56,833 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;@44926134, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:30:56,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:30:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 01:30:56,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-03 01:30:56,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:30:56,845 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:56,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:30:56,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:30:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash -816836340, now seen corresponding path program 1 times [2024-11-03 01:30:56,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:30:56,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210092374] [2024-11-03 01:30:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:30:56,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:56,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:30:56,862 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 01:30:56,864 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 01:30:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:30:57,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:30:57,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:30:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-03 01:30:57,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:30:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-03 01:30:57,224 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:30:57,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210092374] [2024-11-03 01:30:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1210092374] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:30:57,225 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:30:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:30:57,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042739453] [2024-11-03 01:30:57,228 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:30:57,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:30:57,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:30:57,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:30:57,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:30:57,254 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 31 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 01:30:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:30:57,271 INFO L93 Difference]: Finished difference Result 83 states and 136 transitions. [2024-11-03 01:30:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:30:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 80 [2024-11-03 01:30:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:30:57,278 INFO L225 Difference]: With dead ends: 83 [2024-11-03 01:30:57,278 INFO L226 Difference]: Without dead ends: 41 [2024-11-03 01:30:57,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 158 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 01:30:57,284 INFO L432 NwaCegarLoop]: 58 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, 58 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 01:30:57,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:30:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-03 01:30:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-03 01:30:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 01:30:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2024-11-03 01:30:57,311 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 80 [2024-11-03 01:30:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:30:57,312 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2024-11-03 01:30:57,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-03 01:30:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2024-11-03 01:30:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-03 01:30:57,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:30:57,315 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:57,320 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 01:30:57,515 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 01:30:57,516 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:30:57,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:30:57,517 INFO L85 PathProgramCache]: Analyzing trace with hash -673886896, now seen corresponding path program 1 times [2024-11-03 01:30:57,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:30:57,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528432462] [2024-11-03 01:30:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:30:57,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:57,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:30:57,519 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 01:30:57,520 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 01:30:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:30:57,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:30:57,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:30:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-03 01:30:57,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:30:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-03 01:30:58,128 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:30:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528432462] [2024-11-03 01:30:58,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1528432462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:30:58,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:30:58,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 01:30:58,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310959422] [2024-11-03 01:30:58,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:30:58,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 01:30:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:30:58,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 01:30:58,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 01:30:58,135 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-03 01:30:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:30:58,376 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2024-11-03 01:30:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 01:30:58,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 80 [2024-11-03 01:30:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:30:58,379 INFO L225 Difference]: With dead ends: 99 [2024-11-03 01:30:58,379 INFO L226 Difference]: Without dead ends: 61 [2024-11-03 01:30:58,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-03 01:30:58,383 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 52 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 01:30:58,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 120 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 01:30:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-03 01:30:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2024-11-03 01:30:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 01:30:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-11-03 01:30:58,398 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 80 [2024-11-03 01:30:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:30:58,398 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-11-03 01:30:58,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-03 01:30:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-11-03 01:30:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-03 01:30:58,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:30:58,401 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:58,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 01:30:58,601 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 01:30:58,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:30:58,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:30:58,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1587340586, now seen corresponding path program 1 times [2024-11-03 01:30:58,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:30:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792627135] [2024-11-03 01:30:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:30:58,605 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:30:58,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:30:58,608 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 01:30:58,609 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 01:30:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:30:58,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 01:30:58,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:30:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 01:30:59,507 INFO L311 TraceCheckSpWp]: Computing backward predicates...