/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_fillercode_fillercodestructure_filler-pr-ci_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:12:07,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:12:07,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:12:07,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:12:07,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:12:07,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:12:07,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:12:07,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:12:07,764 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:12:07,767 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:12:07,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:12:07,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:12:07,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:12:07,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:12:07,770 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:12:07,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:12:07,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:12:07,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:12:07,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:12:07,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:12:07,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:12:07,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:12:07,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:12:07,772 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:12:07,773 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:12:07,773 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:12:07,773 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:12:07,773 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:12:07,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:12:07,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:12:07,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:12:07,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:12:07,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:12:07,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:12:07,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:12:07,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:12:07,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:12:07,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:12:07,775 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:12:07,775 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:12:07,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:12:07,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:12:07,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:12:07,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:12:07,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:12:07,777 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:12:07,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:12:07,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:12:07,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:12:08,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:12:08,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:12:08,001 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:12:08,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-58.i [2023-12-16 12:12:09,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:12:09,331 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:12:09,331 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-58.i [2023-12-16 12:12:09,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77c89333/b2de6369e8744f86ac75ebbca0b2c05b/FLAGff684e9dc [2023-12-16 12:12:09,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77c89333/b2de6369e8744f86ac75ebbca0b2c05b [2023-12-16 12:12:09,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:12:09,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:12:09,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:12:09,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:12:09,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:12:09,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc7c095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09, skipping insertion in model container [2023-12-16 12:12:09,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:12:09,513 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_fillercode_fillercodestructure_filler-pr-ci_file-58.i[919,932] [2023-12-16 12:12:09,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:12:09,566 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:12:09,574 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_fillercode_fillercodestructure_filler-pr-ci_file-58.i[919,932] [2023-12-16 12:12:09,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:12:09,635 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:12:09,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09 WrapperNode [2023-12-16 12:12:09,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:12:09,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:12:09,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:12:09,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:12:09,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,691 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 184 [2023-12-16 12:12:09,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:12:09,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:12:09,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:12:09,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:12:09,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,721 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]. [2023-12-16 12:12:09,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:12:09,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:12:09,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:12:09,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:12:09,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (1/1) ... [2023-12-16 12:12:09,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:12:09,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:12:09,810 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) [2023-12-16 12:12:09,819 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 [2023-12-16 12:12:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:12:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:12:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:12:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:12:09,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:12:09,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:12:09,939 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:12:09,943 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:12:10,396 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:12:10,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:12:10,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:12:10,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:12:10 BoogieIcfgContainer [2023-12-16 12:12:10,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:12:10,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:12:10,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:12:10,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:12:10,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:12:09" (1/3) ... [2023-12-16 12:12:10,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1c96a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:12:10, skipping insertion in model container [2023-12-16 12:12:10,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:12:09" (2/3) ... [2023-12-16 12:12:10,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1c96a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:12:10, skipping insertion in model container [2023-12-16 12:12:10,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:12:10" (3/3) ... [2023-12-16 12:12:10,438 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-58.i [2023-12-16 12:12:10,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:12:10,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:12:10,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:12:10,503 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;@3d1e32a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:12:10,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:12:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 48 states have internal predecessors, (72), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 12:12:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 12:12:10,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:12:10,531 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:12:10,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:12:10,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:12:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -453274411, now seen corresponding path program 1 times [2023-12-16 12:12:10,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:12:10,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045165591] [2023-12-16 12:12:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:10,556 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 [2023-12-16 12:12:10,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:12:10,591 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) [2023-12-16 12:12:10,593 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 [2023-12-16 12:12:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:10,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:12:10,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2023-12-16 12:12:10,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:12:10,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:12:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045165591] [2023-12-16 12:12:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045165591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:12:10,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:12:10,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:12:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444717414] [2023-12-16 12:12:10,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:12:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:12:10,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:12:11,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:12:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:12:11,050 INFO L87 Difference]: Start difference. First operand has 76 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 48 states have internal predecessors, (72), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:12:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:12:11,105 INFO L93 Difference]: Finished difference Result 149 states and 272 transitions. [2023-12-16 12:12:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:12:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2023-12-16 12:12:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:12:11,119 INFO L225 Difference]: With dead ends: 149 [2023-12-16 12:12:11,119 INFO L226 Difference]: Without dead ends: 74 [2023-12-16 12:12:11,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:12:11,126 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:12:11,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 12:12:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-16 12:12:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-16 12:12:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 12:12:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 117 transitions. [2023-12-16 12:12:11,164 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 117 transitions. Word has length 164 [2023-12-16 12:12:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:12:11,164 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 117 transitions. [2023-12-16 12:12:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:12:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 117 transitions. [2023-12-16 12:12:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 12:12:11,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:12:11,168 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:12:11,193 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 [2023-12-16 12:12:11,375 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 [2023-12-16 12:12:11,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:12:11,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:12:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1793981649, now seen corresponding path program 1 times [2023-12-16 12:12:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:12:11,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477705845] [2023-12-16 12:12:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:11,378 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 [2023-12-16 12:12:11,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:12:11,380 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) [2023-12-16 12:12:11,381 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 [2023-12-16 12:12:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:11,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:12:11,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 519 proven. 18 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-12-16 12:12:11,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:12:11,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:12:11,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477705845] [2023-12-16 12:12:11,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477705845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:12:11,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1888550267] [2023-12-16 12:12:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:11,771 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:12:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:12:11,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:12:11,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-16 12:12:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:12,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:12:12,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 519 proven. 18 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-12-16 12:12:12,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:12:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1888550267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:12:12,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:12:12,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 12:12:12,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547444294] [2023-12-16 12:12:12,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:12:12,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:12:12,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:12:12,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:12:12,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 12:12:12,410 INFO L87 Difference]: Start difference. First operand 74 states and 117 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:12:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:12:12,689 INFO L93 Difference]: Finished difference Result 153 states and 238 transitions. [2023-12-16 12:12:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 12:12:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 164 [2023-12-16 12:12:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:12:12,697 INFO L225 Difference]: With dead ends: 153 [2023-12-16 12:12:12,697 INFO L226 Difference]: Without dead ends: 80 [2023-12-16 12:12:12,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 12:12:12,700 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 79 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:12:12,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 167 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 12:12:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-16 12:12:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-12-16 12:12:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 12:12:12,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 119 transitions. [2023-12-16 12:12:12,713 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 119 transitions. Word has length 164 [2023-12-16 12:12:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:12:12,715 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 119 transitions. [2023-12-16 12:12:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:12:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 119 transitions. [2023-12-16 12:12:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-16 12:12:12,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:12:12,722 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:12:12,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-16 12:12:12,933 INFO L540 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)] Forceful destruction successful, exit code 0 [2023-12-16 12:12:13,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /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 [2023-12-16 12:12:13,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:12:13,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:12:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -820460571, now seen corresponding path program 1 times [2023-12-16 12:12:13,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:12:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158385720] [2023-12-16 12:12:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:13,135 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 [2023-12-16 12:12:13,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:12:13,148 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2023-12-16 12:12:13,149 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 (5)] Waiting until timeout for monitored process [2023-12-16 12:12:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:13,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 12:12:13,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 714 proven. 90 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-16 12:12:16,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:12:21,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:12:21,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158385720] [2023-12-16 12:12:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158385720] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:12:21,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1945360775] [2023-12-16 12:12:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:21,390 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:12:21,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:12:21,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:12:21,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 12:12:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:25,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 12:12:25,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 603 proven. 24 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2023-12-16 12:12:27,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:12:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1945360775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:12:30,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:12:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2023-12-16 12:12:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376789675] [2023-12-16 12:12:30,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:12:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 12:12:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:12:30,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 12:12:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-16 12:12:30,493 INFO L87 Difference]: Start difference. First operand 78 states and 119 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (49), 4 states have call predecessors, (49), 6 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-16 12:12:43,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:12:43,608 INFO L93 Difference]: Finished difference Result 353 states and 529 transitions. [2023-12-16 12:12:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 12:12:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (49), 4 states have call predecessors, (49), 6 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) Word has length 165 [2023-12-16 12:12:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:12:43,617 INFO L225 Difference]: With dead ends: 353 [2023-12-16 12:12:43,617 INFO L226 Difference]: Without dead ends: 276 [2023-12-16 12:12:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 12:12:43,619 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 528 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:12:43,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 754 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-16 12:12:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-16 12:12:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 196. [2023-12-16 12:12:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-16 12:12:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 298 transitions. [2023-12-16 12:12:43,639 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 298 transitions. Word has length 165 [2023-12-16 12:12:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:12:43,640 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 298 transitions. [2023-12-16 12:12:43,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (49), 4 states have call predecessors, (49), 6 states have return successors, (50), 4 states have call predecessors, (50), 4 states have call successors, (50) [2023-12-16 12:12:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 298 transitions. [2023-12-16 12:12:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-16 12:12:43,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:12:43,642 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:12:43,660 INFO L540 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:12:43,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-16 12:12:44,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 12:12:44,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:12:44,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:12:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -820520153, now seen corresponding path program 1 times [2023-12-16 12:12:44,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:12:44,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273239785] [2023-12-16 12:12:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:44,049 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 [2023-12-16 12:12:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:12:44,050 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-16 12:12:44,069 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 (7)] Waiting until timeout for monitored process [2023-12-16 12:12:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:44,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 12:12:44,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 403 proven. 12 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-12-16 12:12:44,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:12:44,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:12:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273239785] [2023-12-16 12:12:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273239785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:12:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1163752325] [2023-12-16 12:12:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:44,366 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:12:44,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:12:44,367 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:12:44,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-16 12:12:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:48,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:12:48,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:12:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 403 proven. 12 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-12-16 12:12:48,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:12:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1163752325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:12:48,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:12:48,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-16 12:12:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600843180] [2023-12-16 12:12:48,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:12:48,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 12:12:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:12:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 12:12:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 12:12:48,427 INFO L87 Difference]: Start difference. First operand 196 states and 298 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:12:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:12:48,620 INFO L93 Difference]: Finished difference Result 405 states and 607 transitions. [2023-12-16 12:12:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 12:12:48,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 165 [2023-12-16 12:12:48,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:12:48,627 INFO L225 Difference]: With dead ends: 405 [2023-12-16 12:12:48,628 INFO L226 Difference]: Without dead ends: 210 [2023-12-16 12:12:48,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 366 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 12:12:48,629 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 71 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:12:48,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 191 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 12:12:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-16 12:12:48,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2023-12-16 12:12:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 143 states have (on average 1.3426573426573427) internal successors, (192), 143 states have internal predecessors, (192), 52 states have call successors, (52), 8 states have call predecessors, (52), 8 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-16 12:12:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 296 transitions. [2023-12-16 12:12:48,645 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 296 transitions. Word has length 165 [2023-12-16 12:12:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:12:48,645 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 296 transitions. [2023-12-16 12:12:48,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-16 12:12:48,646 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 296 transitions. [2023-12-16 12:12:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 12:12:48,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:12:48,647 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:12:48,653 INFO L540 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 12:12:48,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-16 12:12:49,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 12:12:49,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:12:49,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:12:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash 84713650, now seen corresponding path program 1 times [2023-12-16 12:12:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:12:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13758308] [2023-12-16 12:12:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:12:49,061 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 [2023-12-16 12:12:49,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:12:49,063 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-16 12:12:49,065 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 (9)] Waiting until timeout for monitored process [2023-12-16 12:12:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:12:49,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-16 12:12:49,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:13:23,081 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:13:23,082 WARN L340 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:13:24,150 INFO L540 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 12:13:24,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown