/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:12:22,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:12:22,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 22:12:22,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:12:22,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:12:22,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:12:22,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:12:22,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:12:22,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:12:22,220 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:12:22,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:12:22,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:12:22,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:12:22,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:12:22,221 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:12:22,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:12:22,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:12:22,222 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:12:22,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:12:22,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:12:22,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:12:22,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:12:22,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:12:22,228 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:12:22,228 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:12:22,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:12:22,228 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:12:22,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:12:22,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:12:22,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:12:22,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:12:22,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:12:22,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:12:22,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:12:22,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:12:22,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:12:22,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:12:22,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:12:22,232 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:12:22,232 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:12:22,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:12:22,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:12:22,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:12:22,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:12:22,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:12:22,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:12:22,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:12:22,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:12:22,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:12:22,504 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:12:22,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-89.i [2024-11-02 22:12:23,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:12:24,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:12:24,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-89.i [2024-11-02 22:12:24,168 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e29872702/326626b6e8c14bc0a92b02e63e724874/FLAGec4ed7793 [2024-11-02 22:12:24,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e29872702/326626b6e8c14bc0a92b02e63e724874 [2024-11-02 22:12:24,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:12:24,525 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:12:24,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:12:24,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:12:24,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:12:24,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee16f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24, skipping insertion in model container [2024-11-02 22:12:24,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:12:24,702 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-89.i[915,928] [2024-11-02 22:12:24,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:12:24,759 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:12:24,770 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-89.i[915,928] [2024-11-02 22:12:24,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:12:24,805 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:12:24,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24 WrapperNode [2024-11-02 22:12:24,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:12:24,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:12:24,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:12:24,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:12:24,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,847 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2024-11-02 22:12:24,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:12:24,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:12:24,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:12:24,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:12:24,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,872 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]. [2024-11-02 22:12:24,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:12:24,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:12:24,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:12:24,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:12:24,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (1/1) ... [2024-11-02 22:12:24,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:12:24,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:12:24,933 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) [2024-11-02 22:12:24,936 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 [2024-11-02 22:12:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:12:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:12:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:12:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:12:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:12:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:12:25,033 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:12:25,036 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:12:25,648 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-02 22:12:25,648 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:12:25,660 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:12:25,660 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:12:25,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:12:25 BoogieIcfgContainer [2024-11-02 22:12:25,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:12:25,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:12:25,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:12:25,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:12:25,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:12:24" (1/3) ... [2024-11-02 22:12:25,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4ee710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:12:25, skipping insertion in model container [2024-11-02 22:12:25,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:12:24" (2/3) ... [2024-11-02 22:12:25,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4ee710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:12:25, skipping insertion in model container [2024-11-02 22:12:25,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:12:25" (3/3) ... [2024-11-02 22:12:25,667 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-89.i [2024-11-02 22:12:25,679 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:12:25,680 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:12:25,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:12:25,734 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;@2f08e2a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:12:25,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:12:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 32 states have (on average 1.25) internal successors, (40), 33 states have internal predecessors, (40), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-02 22:12:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-02 22:12:25,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:12:25,747 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:12:25,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:12:25,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:12:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -616309307, now seen corresponding path program 1 times [2024-11-02 22:12:25,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:12:25,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636961501] [2024-11-02 22:12:25,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:12:25,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:12:25,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:12:25,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:12:25,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 22:12:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:12:25,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 22:12:26,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:12:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-02 22:12:26,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:12:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-02 22:12:26,230 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:12:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636961501] [2024-11-02 22:12:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1636961501] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:12:26,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:12:26,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 22:12:26,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769714397] [2024-11-02 22:12:26,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:12:26,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 22:12:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:12:26,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 22:12:26,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 22:12:26,265 INFO L87 Difference]: Start difference. First operand has 54 states, 32 states have (on average 1.25) internal successors, (40), 33 states have internal predecessors, (40), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-02 22:12:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:12:26,295 INFO L93 Difference]: Finished difference Result 101 states and 169 transitions. [2024-11-02 22:12:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 22:12:26,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 120 [2024-11-02 22:12:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:12:26,304 INFO L225 Difference]: With dead ends: 101 [2024-11-02 22:12:26,304 INFO L226 Difference]: Without dead ends: 50 [2024-11-02 22:12:26,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 22:12:26,311 INFO L432 NwaCegarLoop]: 71 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, 71 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 [2024-11-02 22:12:26,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:12:26,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-02 22:12:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-02 22:12:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-02 22:12:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 71 transitions. [2024-11-02 22:12:26,352 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 71 transitions. Word has length 120 [2024-11-02 22:12:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:12:26,352 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 71 transitions. [2024-11-02 22:12:26,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-02 22:12:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 71 transitions. [2024-11-02 22:12:26,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-02 22:12:26,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:12:26,355 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:12:26,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 22:12:26,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:12:26,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:12:26,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:12:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1833128139, now seen corresponding path program 1 times [2024-11-02 22:12:26,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:12:26,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781300546] [2024-11-02 22:12:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:12:26,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:12:26,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:12:26,560 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:12:26,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 22:12:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:12:26,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 22:12:26,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:12:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 360 proven. 27 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-02 22:12:26,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:12:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-02 22:12:27,208 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:12:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781300546] [2024-11-02 22:12:27,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1781300546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:12:27,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:12:27,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-02 22:12:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293462484] [2024-11-02 22:12:27,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:12:27,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:12:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:12:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:12:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:12:27,215 INFO L87 Difference]: Start difference. First operand 50 states and 71 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-02 22:12:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:12:27,936 INFO L93 Difference]: Finished difference Result 103 states and 144 transitions. [2024-11-02 22:12:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 22:12:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 120 [2024-11-02 22:12:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:12:27,948 INFO L225 Difference]: With dead ends: 103 [2024-11-02 22:12:27,948 INFO L226 Difference]: Without dead ends: 56 [2024-11-02 22:12:27,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-02 22:12:27,950 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 22:12:27,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 137 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 22:12:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-02 22:12:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-02 22:12:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-02 22:12:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2024-11-02 22:12:27,962 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 120 [2024-11-02 22:12:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:12:27,962 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2024-11-02 22:12:27,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-02 22:12:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2024-11-02 22:12:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-02 22:12:27,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:12:27,965 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 22:12:27,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 22:12:28,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:12:28,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:12:28,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:12:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1831281097, now seen corresponding path program 1 times [2024-11-02 22:12:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:12:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947000366] [2024-11-02 22:12:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:12:28,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:12:28,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:12:28,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:12:28,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 22:12:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:12:29,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-02 22:12:29,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:13:31,713 WARN L286 SmtUtils]: Spent 29.62s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)