/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_amount50_file-78.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:35:35,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:35:35,301 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 22:35:35,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:35:35,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:35:35,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:35:35,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:35:35,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:35:35,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:35:35,336 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:35:35,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:35:35,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:35:35,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:35:35,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:35:35,338 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:35:35,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:35:35,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:35:35,341 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:35:35,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:35:35,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:35:35,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:35:35,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:35:35,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:35:35,344 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:35:35,344 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:35:35,345 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:35:35,345 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:35:35,345 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:35:35,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:35:35,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:35:35,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:35:35,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:35:35,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:35:35,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:35:35,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:35:35,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:35:35,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:35:35,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:35:35,351 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:35:35,351 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:35:35,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:35:35,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:35:35,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:35:35,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:35:35,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:35:35,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:35:35,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:35:35,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:35:35,604 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:35:35,605 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:35:35,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-78.i [2024-11-02 22:35:36,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:35:37,191 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:35:37,192 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-78.i [2024-11-02 22:35:37,204 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b87365c/80062a1a70fd44f9a8fe32355e8e6afa/FLAG31b163383 [2024-11-02 22:35:37,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b87365c/80062a1a70fd44f9a8fe32355e8e6afa [2024-11-02 22:35:37,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:35:37,543 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:35:37,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:35:37,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:35:37,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:35:37,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b25b6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37, skipping insertion in model container [2024-11-02 22:35:37,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,582 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:35:37,758 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_amount50_file-78.i[915,928] [2024-11-02 22:35:37,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:35:37,829 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:35:37,843 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_amount50_file-78.i[915,928] [2024-11-02 22:35:37,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:35:37,907 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:35:37,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37 WrapperNode [2024-11-02 22:35:37,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:35:37,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:35:37,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:35:37,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:35:37,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,952 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 135 [2024-11-02 22:35:37,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:35:37,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:35:37,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:35:37,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:35:37,966 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,989 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 22:35:37,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:37,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:38,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:38,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:38,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:38,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:35:38,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:35:38,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:35:38,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:35:38,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (1/1) ... [2024-11-02 22:35:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:35:38,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:35:38,051 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 22:35:38,058 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 22:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:35:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:35:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:35:38,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:35:38,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:35:38,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:35:43,002 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-02 22:35:43,003 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:35:43,014 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:35:43,014 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:35:43,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:35:43 BoogieIcfgContainer [2024-11-02 22:35:43,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:35:43,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:35:43,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:35:43,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:35:43,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:35:37" (1/3) ... [2024-11-02 22:35:43,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683a018f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:35:43, skipping insertion in model container [2024-11-02 22:35:43,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:37" (2/3) ... [2024-11-02 22:35:43,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683a018f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:35:43, skipping insertion in model container [2024-11-02 22:35:43,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:35:43" (3/3) ... [2024-11-02 22:35:43,024 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-78.i [2024-11-02 22:35:43,040 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:35:43,041 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:35:43,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:35:43,102 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;@242634e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:35:43,102 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:35:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 37 states have internal predecessors, (48), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-02 22:35:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-02 22:35:43,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:35:43,117 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:43,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:35:43,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:35:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash -303364268, now seen corresponding path program 1 times [2024-11-02 22:35:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:35:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566050504] [2024-11-02 22:35:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:35:43,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:35:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:35:43,147 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 22:35:43,148 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 22:35:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:35:43,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 22:35:43,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:35:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-02 22:35:43,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:35:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-02 22:35:43,735 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:35:43,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566050504] [2024-11-02 22:35:43,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [566050504] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:35:43,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:35:43,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 22:35:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617592943] [2024-11-02 22:35:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:35:43,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 22:35:43,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:35:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 22:35:43,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 22:35:43,767 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 37 states have internal predecessors, (48), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-02 22:35:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:35:43,796 INFO L93 Difference]: Finished difference Result 107 states and 180 transitions. [2024-11-02 22:35:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 22:35:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 117 [2024-11-02 22:35:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:35:43,806 INFO L225 Difference]: With dead ends: 107 [2024-11-02 22:35:43,806 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 22:35:43,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 232 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 22:35:43,814 INFO L432 NwaCegarLoop]: 77 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, 77 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 22:35:43,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:35:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 22:35:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 22:35:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-02 22:35:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 77 transitions. [2024-11-02 22:35:43,856 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 77 transitions. Word has length 117 [2024-11-02 22:35:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:35:43,857 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 77 transitions. [2024-11-02 22:35:43,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-02 22:35:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 77 transitions. [2024-11-02 22:35:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-02 22:35:43,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:35:43,861 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:43,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 22:35:44,062 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 22:35:44,062 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:35:44,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:35:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 200732360, now seen corresponding path program 1 times [2024-11-02 22:35:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:35:44,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850407495] [2024-11-02 22:35:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:35:44,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:35:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:35:44,066 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 22:35:44,067 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 22:35:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:35:44,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:35:44,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:35:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-02 22:35:44,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:35:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-02 22:35:44,725 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:35:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850407495] [2024-11-02 22:35:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [850407495] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:35:44,726 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:35:44,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:35:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391962139] [2024-11-02 22:35:44,727 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:35:44,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:35:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:35:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:35:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:35:44,730 INFO L87 Difference]: Start difference. First operand 53 states and 77 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-02 22:35:48,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:35:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:35:48,160 INFO L93 Difference]: Finished difference Result 103 states and 151 transitions. [2024-11-02 22:35:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:35:48,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 117 [2024-11-02 22:35:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:35:48,196 INFO L225 Difference]: With dead ends: 103 [2024-11-02 22:35:48,196 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 22:35:48,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:35:48,198 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-02 22:35:48,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-02 22:35:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 22:35:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 22:35:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-02 22:35:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2024-11-02 22:35:48,207 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 117 [2024-11-02 22:35:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:35:48,209 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2024-11-02 22:35:48,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-02 22:35:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2024-11-02 22:35:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-02 22:35:48,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:35:48,211 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:48,244 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 22:35:48,411 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 22:35:48,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:35:48,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:35:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash 566889491, now seen corresponding path program 1 times [2024-11-02 22:35:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:35:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750103101] [2024-11-02 22:35:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:35:48,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:35:48,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:35:48,415 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 22:35:48,416 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 22:35:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:35:48,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 22:35:48,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:35:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-02 22:35:51,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:35:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-02 22:35:52,151 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:35:52,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750103101] [2024-11-02 22:35:52,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1750103101] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:35:52,151 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:35:52,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-02 22:35:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731621377] [2024-11-02 22:35:52,152 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:35:52,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:35:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:35:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:35:52,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:35:52,154 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-02 22:35:57,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:02,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:07,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:36:07,414 INFO L93 Difference]: Finished difference Result 239 states and 342 transitions. [2024-11-02 22:36:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 22:36:07,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 118 [2024-11-02 22:36:07,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:36:07,448 INFO L225 Difference]: With dead ends: 239 [2024-11-02 22:36:07,448 INFO L226 Difference]: Without dead ends: 189 [2024-11-02 22:36:07,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-02 22:36:07,450 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 134 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 92 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2024-11-02 22:36:07,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 365 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 222 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2024-11-02 22:36:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-02 22:36:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 151. [2024-11-02 22:36:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 93 states have internal predecessors, (112), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-02 22:36:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 220 transitions. [2024-11-02 22:36:07,495 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 220 transitions. Word has length 118 [2024-11-02 22:36:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:36:07,496 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 220 transitions. [2024-11-02 22:36:07,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-02 22:36:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 220 transitions. [2024-11-02 22:36:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-02 22:36:07,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:36:07,500 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:07,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 22:36:07,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:07,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:36:07,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:36:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1246947861, now seen corresponding path program 1 times [2024-11-02 22:36:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:36:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952958038] [2024-11-02 22:36:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:36:07,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:07,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:36:07,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:36:07,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 22:36:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:36:08,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 22:36:08,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:36:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-02 22:36:09,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:36:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-02 22:36:20,295 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:36:20,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952958038] [2024-11-02 22:36:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [952958038] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:36:20,295 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:36:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-02 22:36:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900832414] [2024-11-02 22:36:20,296 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:36:20,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:36:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:36:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:36:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:36:20,298 INFO L87 Difference]: Start difference. First operand 151 states and 220 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-02 22:36:24,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:28,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:32,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:39,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 22:36:41,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 22:36:47,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:36:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:36:47,467 INFO L93 Difference]: Finished difference Result 372 states and 528 transitions. [2024-11-02 22:36:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 22:36:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 118 [2024-11-02 22:36:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:36:47,504 INFO L225 Difference]: With dead ends: 372 [2024-11-02 22:36:47,504 INFO L226 Difference]: Without dead ends: 272 [2024-11-02 22:36:47,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:36:47,506 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 85 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:36:47,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 290 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 198 Invalid, 2 Unknown, 0 Unchecked, 27.1s Time] [2024-11-02 22:36:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-02 22:36:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2024-11-02 22:36:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 173 states have (on average 1.2254335260115607) internal successors, (212), 177 states have internal predecessors, (212), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-02 22:36:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 372 transitions. [2024-11-02 22:36:47,559 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 372 transitions. Word has length 118 [2024-11-02 22:36:47,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:36:47,560 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 372 transitions. [2024-11-02 22:36:47,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-02 22:36:47,560 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 372 transitions. [2024-11-02 22:36:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-02 22:36:47,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:36:47,562 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:47,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 22:36:47,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:47,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:36:47,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:36:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1948012439, now seen corresponding path program 1 times [2024-11-02 22:36:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:36:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734333734] [2024-11-02 22:36:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:36:47,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:36:47,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:36:47,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:36:47,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 22:37:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:37:07,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-02 22:37:07,168 INFO L278 TraceCheckSpWp]: Computing forward predicates...