/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-99.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:38:16,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:38:16,843 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 22:38:16,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:38:16,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:38:16,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:38:16,873 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:38:16,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:38:16,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:38:16,875 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:38:16,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:38:16,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:38:16,876 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:38:16,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:38:16,876 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:38:16,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:38:16,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:38:16,877 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:38:16,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:38:16,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:38:16,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:38:16,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:38:16,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:38:16,879 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:38:16,879 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:38:16,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:38:16,879 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:38:16,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:38:16,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:38:16,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:38:16,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:38:16,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:38:16,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:38:16,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:38:16,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:38:16,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:38:16,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:38:16,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:38:16,882 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:38:16,882 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:38:16,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:38:16,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:38:16,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:38:16,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:38:16,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:38:17,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:38:17,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:38:17,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:38:17,105 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:38:17,105 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:38:17,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-99.i [2024-11-02 22:38:18,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:38:18,693 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:38:18,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount50_file-99.i [2024-11-02 22:38:18,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f07f88a/69708a65d2854c0697241ff6e06b4c1d/FLAG93fb946fd [2024-11-02 22:38:19,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f07f88a/69708a65d2854c0697241ff6e06b4c1d [2024-11-02 22:38:19,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:38:19,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:38:19,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:38:19,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:38:19,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:38:19,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45de7f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19, skipping insertion in model container [2024-11-02 22:38:19,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:38:19,266 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-99.i[915,928] [2024-11-02 22:38:19,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:38:19,340 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:38:19,349 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-99.i[915,928] [2024-11-02 22:38:19,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:38:19,384 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:38:19,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19 WrapperNode [2024-11-02 22:38:19,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:38:19,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:38:19,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:38:19,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:38:19,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,420 INFO L138 Inliner]: procedures = 27, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 160 [2024-11-02 22:38:19,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:38:19,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:38:19,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:38:19,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:38:19,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,446 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 22:38:19,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:38:19,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:38:19,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:38:19,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:38:19,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (1/1) ... [2024-11-02 22:38:19,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:38:19,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:38:19,498 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 22:38:19,507 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 22:38:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:38:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:38:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:38:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:38:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:38:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:38:19,617 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:38:19,619 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:38:21,357 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-02 22:38:21,358 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:38:21,370 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:38:21,370 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:38:21,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:38:21 BoogieIcfgContainer [2024-11-02 22:38:21,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:38:21,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:38:21,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:38:21,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:38:21,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:38:19" (1/3) ... [2024-11-02 22:38:21,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628ee89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:38:21, skipping insertion in model container [2024-11-02 22:38:21,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:38:19" (2/3) ... [2024-11-02 22:38:21,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628ee89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:38:21, skipping insertion in model container [2024-11-02 22:38:21,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:38:21" (3/3) ... [2024-11-02 22:38:21,383 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-99.i [2024-11-02 22:38:21,411 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:38:21,414 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:38:21,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:38:21,480 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;@dfae67c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:38:21,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:38:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 46 states have internal predecessors, (59), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-02 22:38:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-02 22:38:21,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:38:21,501 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:21,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:38:21,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:38:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash 638589968, now seen corresponding path program 1 times [2024-11-02 22:38:21,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:38:21,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072892067] [2024-11-02 22:38:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:38:21,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:38:21,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:38:21,522 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 22:38:21,523 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 22:38:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:38:21,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 22:38:21,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:38:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 455 proven. 141 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2024-11-02 22:38:23,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:38:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 21 proven. 144 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2024-11-02 22:38:23,909 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:38:23,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072892067] [2024-11-02 22:38:23,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1072892067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:38:23,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:38:23,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2024-11-02 22:38:23,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137187405] [2024-11-02 22:38:23,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:38:23,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 22:38:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:38:23,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 22:38:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-02 22:38:23,943 INFO L87 Difference]: Start difference. First operand has 77 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 46 states have internal predecessors, (59), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 3 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2024-11-02 22:38:26,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:38:26,684 INFO L93 Difference]: Finished difference Result 243 states and 427 transitions. [2024-11-02 22:38:26,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-02 22:38:26,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 3 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 180 [2024-11-02 22:38:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:38:26,695 INFO L225 Difference]: With dead ends: 243 [2024-11-02 22:38:26,695 INFO L226 Difference]: Without dead ends: 169 [2024-11-02 22:38:26,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2024-11-02 22:38:26,704 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 160 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-02 22:38:26,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 420 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-02 22:38:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-02 22:38:26,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 83. [2024-11-02 22:38:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-02 22:38:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2024-11-02 22:38:26,743 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 180 [2024-11-02 22:38:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:38:26,744 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2024-11-02 22:38:26,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 3 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2024-11-02 22:38:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2024-11-02 22:38:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-02 22:38:26,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:38:26,746 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:26,770 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 22:38:26,947 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 22:38:26,947 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:38:26,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:38:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1339654546, now seen corresponding path program 1 times [2024-11-02 22:38:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:38:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057428849] [2024-11-02 22:38:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:38:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:38:26,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:38:26,952 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 22:38:26,953 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 22:38:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:38:27,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 22:38:27,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:38:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 730 proven. 57 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2024-11-02 22:38:31,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:38:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 27 proven. 57 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2024-11-02 22:38:31,587 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:38:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057428849] [2024-11-02 22:38:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1057428849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:38:31,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:38:31,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-02 22:38:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792319414] [2024-11-02 22:38:31,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:38:31,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 22:38:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:38:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 22:38:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-02 22:38:31,593 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2024-11-02 22:38:36,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 22:38:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:38:37,367 INFO L93 Difference]: Finished difference Result 217 states and 292 transitions. [2024-11-02 22:38:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 22:38:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 180 [2024-11-02 22:38:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:38:37,371 INFO L225 Difference]: With dead ends: 217 [2024-11-02 22:38:37,371 INFO L226 Difference]: Without dead ends: 137 [2024-11-02 22:38:37,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-02 22:38:37,372 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 150 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-02 22:38:37,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 223 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-02 22:38:37,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-02 22:38:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-11-02 22:38:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.144736842105263) internal successors, (87), 77 states have internal predecessors, (87), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-02 22:38:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 163 transitions. [2024-11-02 22:38:37,390 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 163 transitions. Word has length 180 [2024-11-02 22:38:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:38:37,391 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 163 transitions. [2024-11-02 22:38:37,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 3 states have call successors, (48), 2 states have call predecessors, (48), 4 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2024-11-02 22:38:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 163 transitions. [2024-11-02 22:38:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-02 22:38:37,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:38:37,393 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:37,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 22:38:37,594 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 22:38:37,595 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:38:37,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:38:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1574420026, now seen corresponding path program 1 times [2024-11-02 22:38:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:38:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849082416] [2024-11-02 22:38:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:38:37,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:38:37,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:38:37,597 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 22:38:37,599 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 22:38:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:38:37,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 22:38:37,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:38:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-11-02 22:38:38,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:38:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-11-02 22:38:38,402 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:38:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849082416] [2024-11-02 22:38:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1849082416] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:38:38,403 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:38:38,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2024-11-02 22:38:38,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435767617] [2024-11-02 22:38:38,403 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:38:38,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 22:38:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:38:38,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 22:38:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 22:38:38,405 INFO L87 Difference]: Start difference. First operand 122 states and 163 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2024-11-02 22:38:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:38:39,272 INFO L93 Difference]: Finished difference Result 360 states and 483 transitions. [2024-11-02 22:38:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 22:38:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 181 [2024-11-02 22:38:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:38:39,296 INFO L225 Difference]: With dead ends: 360 [2024-11-02 22:38:39,296 INFO L226 Difference]: Without dead ends: 241 [2024-11-02 22:38:39,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 22:38:39,297 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 25 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 22:38:39,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 401 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 22:38:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-02 22:38:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 122. [2024-11-02 22:38:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.131578947368421) internal successors, (86), 77 states have internal predecessors, (86), 38 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-02 22:38:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2024-11-02 22:38:39,320 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 181 [2024-11-02 22:38:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:38:39,321 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2024-11-02 22:38:39,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2024-11-02 22:38:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2024-11-02 22:38:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-02 22:38:39,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:38:39,326 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:38:39,348 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 22:38:39,527 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 22:38:39,527 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:38:39,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:38:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 200587336, now seen corresponding path program 1 times [2024-11-02 22:38:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:38:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885943164] [2024-11-02 22:38:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:38:39,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:38:39,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:38:39,530 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 22:38:39,531 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 22:38:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:38:41,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-02 22:38:41,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:39:53,923 WARN L286 SmtUtils]: Spent 13.54s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)