/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_amount500_file-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:14:24,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:14:24,260 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 22:14:24,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:14:24,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:14:24,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:14:24,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:14:24,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:14:24,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:14:24,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:14:24,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:14:24,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:14:24,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:14:24,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:14:24,280 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:14:24,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:14:24,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:14:24,281 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:14:24,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:14:24,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:14:24,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:14:24,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:14:24,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:14:24,283 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:14:24,283 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:14:24,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:14:24,283 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:14:24,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:14:24,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:14:24,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:14:24,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:14:24,284 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:14:24,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:14:24,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:14:24,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:14:24,285 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:14:24,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:14:24,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:14:24,286 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:14:24,286 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:14:24,286 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:14:24,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:14:24,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:14:24,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:14:24,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:14:24,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:14:24,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:14:24,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:14:24,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:14:24,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:14:24,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-14.i [2024-11-02 22:14:25,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:14:25,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:14:25,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-14.i [2024-11-02 22:14:26,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a97a642/b16f8ec90580465186e8d31d9eda752b/FLAG72c5d8c94 [2024-11-02 22:14:26,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a97a642/b16f8ec90580465186e8d31d9eda752b [2024-11-02 22:14:26,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:14:26,015 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:14:26,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:14:26,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:14:26,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:14:26,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63493172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26, skipping insertion in model container [2024-11-02 22:14:26,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:14:26,181 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_amount500_file-14.i[916,929] [2024-11-02 22:14:26,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:14:26,386 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:14:26,401 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_amount500_file-14.i[916,929] [2024-11-02 22:14:26,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:14:26,527 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:14:26,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26 WrapperNode [2024-11-02 22:14:26,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:14:26,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:14:26,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:14:26,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:14:26,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,610 INFO L138 Inliner]: procedures = 27, calls = 97, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 629 [2024-11-02 22:14:26,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:14:26,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:14:26,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:14:26,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:14:26,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,669 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 22:14:26,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,733 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:14:26,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:14:26,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:14:26,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:14:26,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (1/1) ... [2024-11-02 22:14:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:14:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:14:26,764 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 22:14:26,767 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 22:14:26,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:14:26,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:14:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:14:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:14:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:14:26,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:14:26,893 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:14:26,894 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:14:55,518 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-02 22:14:55,519 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:14:55,544 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:14:55,544 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:14:55,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:55 BoogieIcfgContainer [2024-11-02 22:14:55,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:14:55,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:14:55,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:14:55,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:14:55,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:14:26" (1/3) ... [2024-11-02 22:14:55,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed3296f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:14:55, skipping insertion in model container [2024-11-02 22:14:55,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:14:26" (2/3) ... [2024-11-02 22:14:55,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed3296f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:14:55, skipping insertion in model container [2024-11-02 22:14:55,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:14:55" (3/3) ... [2024-11-02 22:14:55,552 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-14.i [2024-11-02 22:14:55,564 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:14:55,565 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:14:55,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:14:55,631 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;@4402afab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:14:55,631 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:14:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 173 states have (on average 1.5375722543352601) internal successors, (266), 174 states have internal predecessors, (266), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-02 22:14:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-02 22:14:55,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:14:55,677 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:55,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:14:55,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:14:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash -65744952, now seen corresponding path program 1 times [2024-11-02 22:14:55,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:14:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249686570] [2024-11-02 22:14:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:14:55,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:14:55,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:14:55,693 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 22:14:55,694 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 22:14:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:14:57,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 22:14:57,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:14:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2024-11-02 22:14:57,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:15:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2024-11-02 22:15:04,145 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:15:04,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249686570] [2024-11-02 22:15:04,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1249686570] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 22:15:04,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 22:15:04,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 22:15:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759498415] [2024-11-02 22:15:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 22:15:04,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 22:15:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:15:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 22:15:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 22:15:04,175 INFO L87 Difference]: Start difference. First operand has 260 states, 173 states have (on average 1.5375722543352601) internal successors, (266), 174 states have internal predecessors, (266), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Second operand has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) [2024-11-02 22:15:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:15:04,213 INFO L93 Difference]: Finished difference Result 513 states and 946 transitions. [2024-11-02 22:15:04,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 22:15:04,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) Word has length 549 [2024-11-02 22:15:04,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:15:04,221 INFO L225 Difference]: With dead ends: 513 [2024-11-02 22:15:04,222 INFO L226 Difference]: Without dead ends: 256 [2024-11-02 22:15:04,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1096 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 22:15:04,227 INFO L432 NwaCegarLoop]: 427 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, 427 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 22:15:04,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:15:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-02 22:15:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-02 22:15:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 170 states have (on average 1.5235294117647058) internal successors, (259), 170 states have internal predecessors, (259), 84 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-02 22:15:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 427 transitions. [2024-11-02 22:15:04,296 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 427 transitions. Word has length 549 [2024-11-02 22:15:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:15:04,297 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 427 transitions. [2024-11-02 22:15:04,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 2 states have call successors, (84) [2024-11-02 22:15:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 427 transitions. [2024-11-02 22:15:04,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-02 22:15:04,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:15:04,306 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:04,462 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 22:15:04,506 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 22:15:04,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:15:04,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:15:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -145898900, now seen corresponding path program 1 times [2024-11-02 22:15:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:15:04,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891210941] [2024-11-02 22:15:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:15:04,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:15:04,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:15:04,510 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 22:15:04,511 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 22:15:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:15:05,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:15:05,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:15:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2024-11-02 22:15:06,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:15:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2024-11-02 22:15:13,540 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:15:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891210941] [2024-11-02 22:15:13,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [891210941] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:15:13,540 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:15:13,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:15:13,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265963288] [2024-11-02 22:15:13,541 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:15:13,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:15:13,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:15:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:15:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:15:13,544 INFO L87 Difference]: Start difference. First operand 256 states and 427 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2024-11-02 22:15:18,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:15:22,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:15:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:15:22,678 INFO L93 Difference]: Finished difference Result 674 states and 1127 transitions. [2024-11-02 22:15:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:15:22,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 549 [2024-11-02 22:15:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:15:22,913 INFO L225 Difference]: With dead ends: 674 [2024-11-02 22:15:22,913 INFO L226 Difference]: Without dead ends: 421 [2024-11-02 22:15:22,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:15:22,915 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 270 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:15:22,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 838 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2024-11-02 22:15:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-02 22:15:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 418. [2024-11-02 22:15:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 292 states have (on average 1.5547945205479452) internal successors, (454), 293 states have internal predecessors, (454), 123 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (123), 122 states have call predecessors, (123), 123 states have call successors, (123) [2024-11-02 22:15:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 700 transitions. [2024-11-02 22:15:22,963 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 700 transitions. Word has length 549 [2024-11-02 22:15:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:15:22,966 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 700 transitions. [2024-11-02 22:15:22,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2024-11-02 22:15:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 700 transitions. [2024-11-02 22:15:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-02 22:15:22,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:15:22,972 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:23,123 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 22:15:23,176 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 22:15:23,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:15:23,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:15:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1240886510, now seen corresponding path program 1 times [2024-11-02 22:15:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:15:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385387382] [2024-11-02 22:15:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:15:23,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:15:23,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:15:23,185 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 22:15:23,188 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 22:15:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:15:24,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:15:24,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:15:25,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2024-11-02 22:15:25,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:15:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2024-11-02 22:15:34,757 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:15:34,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385387382] [2024-11-02 22:15:34,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1385387382] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:15:34,757 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:15:34,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:15:34,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277925401] [2024-11-02 22:15:34,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:15:34,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:15:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:15:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:15:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:15:34,760 INFO L87 Difference]: Start difference. First operand 418 states and 700 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2024-11-02 22:15:39,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:15:43,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:15:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:15:43,605 INFO L93 Difference]: Finished difference Result 1143 states and 1915 transitions. [2024-11-02 22:15:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 22:15:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) Word has length 549 [2024-11-02 22:15:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:15:43,877 INFO L225 Difference]: With dead ends: 1143 [2024-11-02 22:15:43,878 INFO L226 Difference]: Without dead ends: 728 [2024-11-02 22:15:43,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:15:43,880 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 252 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-02 22:15:43,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 956 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2024-11-02 22:15:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-02 22:15:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 724. [2024-11-02 22:15:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 522 states have (on average 1.5689655172413792) internal successors, (819), 525 states have internal predecessors, (819), 197 states have call successors, (197), 4 states have call predecessors, (197), 4 states have return successors, (197), 194 states have call predecessors, (197), 197 states have call successors, (197) [2024-11-02 22:15:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1213 transitions. [2024-11-02 22:15:43,952 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1213 transitions. Word has length 549 [2024-11-02 22:15:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:15:43,953 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1213 transitions. [2024-11-02 22:15:43,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2024-11-02 22:15:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1213 transitions. [2024-11-02 22:15:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2024-11-02 22:15:43,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:15:43,957 INFO L215 NwaCegarLoop]: trace histogram [84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:44,117 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 22:15:44,161 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 22:15:44,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:15:44,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:15:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1674615596, now seen corresponding path program 1 times [2024-11-02 22:15:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:15:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749000873] [2024-11-02 22:15:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:15:44,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:15:44,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:15:44,165 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 22:15:44,166 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 22:15:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:15:45,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:15:45,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:15:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2024-11-02 22:15:46,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:15:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13944 trivial. 0 not checked. [2024-11-02 22:15:58,094 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:15:58,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749000873] [2024-11-02 22:15:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [749000873] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:15:58,094 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:15:58,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 22:15:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675663078] [2024-11-02 22:15:58,094 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:15:58,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 22:15:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:15:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 22:15:58,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 22:15:58,099 INFO L87 Difference]: Start difference. First operand 724 states and 1213 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 1 states have call predecessors, (84), 1 states have call successors, (84) [2024-11-02 22:16:02,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:16:04,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 22:16:09,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []