/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-17.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 21:44:49,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 21:44:49,523 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 21:44:49,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 21:44:49,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 21:44:49,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 21:44:49,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 21:44:49,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 21:44:49,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 21:44:49,543 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 21:44:49,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 21:44:49,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 21:44:49,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 21:44:49,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 21:44:49,544 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 21:44:49,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 21:44:49,545 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 21:44:49,545 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 21:44:49,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 21:44:49,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 21:44:49,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 21:44:49,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 21:44:49,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 21:44:49,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 21:44:49,550 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 21:44:49,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 21:44:49,550 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 21:44:49,551 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 21:44:49,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 21:44:49,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 21:44:49,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 21:44:49,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 21:44:49,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 21:44:49,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 21:44:49,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 21:44:49,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 21:44:49,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 21:44:49,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 21:44:49,553 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 21:44:49,553 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 21:44:49,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 21:44:49,556 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 21:44:49,556 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 21:44:49,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 21:44:49,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 21:44:49,557 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 21:44:49,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 21:44:49,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 21:44:49,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 21:44:49,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 21:44:49,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 21:44:49,739 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 21:44:49,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-17.i [2023-12-22 21:44:50,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 21:44:50,975 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 21:44:50,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-17.i [2023-12-22 21:44:50,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c8def56/c30c650bdfff4b3d80825ce00b130a75/FLAGe0775fdd0 [2023-12-22 21:44:50,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c8def56/c30c650bdfff4b3d80825ce00b130a75 [2023-12-22 21:44:50,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 21:44:50,997 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 21:44:50,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 21:44:50,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 21:44:51,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 21:44:51,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:44:50" (1/1) ... [2023-12-22 21:44:51,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f711708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51, skipping insertion in model container [2023-12-22 21:44:51,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:44:50" (1/1) ... [2023-12-22 21:44:51,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 21:44:51,178 WARN L239 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_codestructure_steplocals_file-17.i[917,930] [2023-12-22 21:44:51,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 21:44:51,286 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 21:44:51,294 WARN L239 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_codestructure_steplocals_file-17.i[917,930] [2023-12-22 21:44:51,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 21:44:51,322 INFO L206 MainTranslator]: Completed translation [2023-12-22 21:44:51,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51 WrapperNode [2023-12-22 21:44:51,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 21:44:51,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 21:44:51,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 21:44:51,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 21:44:51,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,360 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2023-12-22 21:44:51,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 21:44:51,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 21:44:51,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 21:44:51,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 21:44:51,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,375 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,391 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]. [2023-12-22 21:44:51,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 21:44:51,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 21:44:51,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 21:44:51,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 21:44:51,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (1/1) ... [2023-12-22 21:44:51,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 21:44:51,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 21:44:51,473 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) [2023-12-22 21:44:51,516 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 [2023-12-22 21:44:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 21:44:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 21:44:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 21:44:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 21:44:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 21:44:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 21:44:51,599 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 21:44:51,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 21:44:52,283 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 21:44:52,335 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 21:44:52,335 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 21:44:52,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:44:52 BoogieIcfgContainer [2023-12-22 21:44:52,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 21:44:52,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 21:44:52,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 21:44:52,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 21:44:52,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:44:50" (1/3) ... [2023-12-22 21:44:52,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b24c198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:44:52, skipping insertion in model container [2023-12-22 21:44:52,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:44:51" (2/3) ... [2023-12-22 21:44:52,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b24c198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:44:52, skipping insertion in model container [2023-12-22 21:44:52,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:44:52" (3/3) ... [2023-12-22 21:44:52,351 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-17.i [2023-12-22 21:44:52,362 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 21:44:52,362 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 21:44:52,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 21:44:52,397 INFO L357 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, mHoare=true, 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;@37885226, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 21:44:52,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 21:44:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-22 21:44:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 21:44:52,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 21:44:52,414 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 21:44:52,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 21:44:52,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 21:44:52,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1479792772, now seen corresponding path program 1 times [2023-12-22 21:44:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 21:44:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851865113] [2023-12-22 21:44:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 21:44:52,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 21:44:52,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 21:44:52,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 21:44:52,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 21:44:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 21:44:52,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 21:44:52,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 21:44:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-12-22 21:44:52,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 21:44:52,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 21:44:52,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851865113] [2023-12-22 21:44:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851865113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 21:44:52,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 21:44:52,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 21:44:52,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348233944] [2023-12-22 21:44:52,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 21:44:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 21:44:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 21:44:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 21:44:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 21:44:52,718 INFO L87 Difference]: Start difference. First operand has 60 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 36 states have internal predecessors, (50), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-22 21:44:52,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 21:44:52,901 INFO L93 Difference]: Finished difference Result 117 states and 208 transitions. [2023-12-22 21:44:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 21:44:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 136 [2023-12-22 21:44:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 21:44:52,917 INFO L225 Difference]: With dead ends: 117 [2023-12-22 21:44:52,918 INFO L226 Difference]: Without dead ends: 58 [2023-12-22 21:44:52,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 21:44:52,924 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-22 21:44:52,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-22 21:44:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-22 21:44:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-22 21:44:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-22 21:44:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 89 transitions. [2023-12-22 21:44:52,969 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 89 transitions. Word has length 136 [2023-12-22 21:44:52,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 21:44:52,969 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 89 transitions. [2023-12-22 21:44:52,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-22 21:44:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 89 transitions. [2023-12-22 21:44:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-22 21:44:52,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 21:44:52,973 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 21:44:52,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-22 21:44:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 21:44:53,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 21:44:53,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 21:44:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1363046912, now seen corresponding path program 1 times [2023-12-22 21:44:53,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 21:44:53,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308253469] [2023-12-22 21:44:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 21:44:53,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 21:44:53,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 21:44:53,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 21:44:53,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 21:44:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 21:44:53,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-22 21:44:53,361 INFO L285 TraceCheckSpWp]: Computing forward predicates...