/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-co_file-50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 13:13:10,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 13:13:10,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 13:13:10,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 13:13:10,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 13:13:10,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 13:13:10,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 13:13:10,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 13:13:10,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 13:13:10,787 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 13:13:10,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 13:13:10,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 13:13:10,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 13:13:10,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 13:13:10,789 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 13:13:10,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 13:13:10,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 13:13:10,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 13:13:10,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 13:13:10,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 13:13:10,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 13:13:10,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 13:13:10,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 13:13:10,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 13:13:10,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:13:10,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 13:13:10,793 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 13:13:10,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 13:13:10,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 13:13:10,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 13:13:10,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 13:13:10,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 13:13:10,794 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 13:13:10,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 13:13:10,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 13:13:11,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 13:13:11,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 13:13:11,009 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 13:13:11,009 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 13:13:11,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-50.i [2023-12-23 13:13:11,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 13:13:12,179 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 13:13:12,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-50.i [2023-12-23 13:13:12,189 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f549a9280/c2565482064047edb1c5ec1cbef3e77b/FLAG75cacccb0 [2023-12-23 13:13:12,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f549a9280/c2565482064047edb1c5ec1cbef3e77b [2023-12-23 13:13:12,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 13:13:12,207 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 13:13:12,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 13:13:12,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 13:13:12,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 13:13:12,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5793f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12, skipping insertion in model container [2023-12-23 13:13:12,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 13:13:12,356 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-co_file-50.i[919,932] [2023-12-23 13:13:12,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:13:12,439 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 13:13:12,447 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-co_file-50.i[919,932] [2023-12-23 13:13:12,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:13:12,505 INFO L206 MainTranslator]: Completed translation [2023-12-23 13:13:12,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12 WrapperNode [2023-12-23 13:13:12,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 13:13:12,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 13:13:12,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 13:13:12,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 13:13:12,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,559 INFO L138 Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2023-12-23 13:13:12,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 13:13:12,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 13:13:12,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 13:13:12,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 13:13:12,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,586 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]. [2023-12-23 13:13:12,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 13:13:12,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 13:13:12,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 13:13:12,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 13:13:12,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (1/1) ... [2023-12-23 13:13:12,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:13:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 13:13:12,641 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) [2023-12-23 13:13:12,646 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 [2023-12-23 13:13:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 13:13:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 13:13:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 13:13:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 13:13:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 13:13:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 13:13:12,731 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 13:13:12,732 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 13:13:22,376 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 13:13:22,436 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 13:13:22,436 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 13:13:22,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:13:22 BoogieIcfgContainer [2023-12-23 13:13:22,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 13:13:22,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 13:13:22,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 13:13:22,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 13:13:22,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:13:12" (1/3) ... [2023-12-23 13:13:22,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f01de79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:13:22, skipping insertion in model container [2023-12-23 13:13:22,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:13:12" (2/3) ... [2023-12-23 13:13:22,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f01de79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:13:22, skipping insertion in model container [2023-12-23 13:13:22,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:13:22" (3/3) ... [2023-12-23 13:13:22,442 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-50.i [2023-12-23 13:13:22,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 13:13:22,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 13:13:22,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 13:13:22,507 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;@2ca052ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 13:13:22,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 13:13:22,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 53 states have internal predecessors, (73), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 13:13:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-23 13:13:22,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:13:22,528 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:13:22,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:13:22,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:13:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 362140345, now seen corresponding path program 1 times [2023-12-23 13:13:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:13:22,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352167838] [2023-12-23 13:13:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:13:22,548 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 [2023-12-23 13:13:22,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:13:22,550 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) [2023-12-23 13:13:22,555 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 [2023-12-23 13:13:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:13:23,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 13:13:23,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:13:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1080 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-12-23 13:13:23,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:13:23,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:13:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352167838] [2023-12-23 13:13:23,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352167838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:13:23,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:13:23,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 13:13:23,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740908833] [2023-12-23 13:13:23,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:13:23,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 13:13:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:13:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 13:13:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:13:23,257 INFO L87 Difference]: Start difference. First operand has 90 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 53 states have internal predecessors, (73), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 13:13:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:13:23,406 INFO L93 Difference]: Finished difference Result 177 states and 319 transitions. [2023-12-23 13:13:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 13:13:23,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 217 [2023-12-23 13:13:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:13:23,422 INFO L225 Difference]: With dead ends: 177 [2023-12-23 13:13:23,423 INFO L226 Difference]: Without dead ends: 88 [2023-12-23 13:13:23,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:13:23,427 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 13:13:23,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 13:13:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-23 13:13:23,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-23 13:13:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 51 states have internal predecessors, (67), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 13:13:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 137 transitions. [2023-12-23 13:13:23,461 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 137 transitions. Word has length 217 [2023-12-23 13:13:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:13:23,461 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 137 transitions. [2023-12-23 13:13:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 13:13:23,461 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 137 transitions. [2023-12-23 13:13:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-23 13:13:23,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:13:23,464 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:13:23,483 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 [2023-12-23 13:13:23,682 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 [2023-12-23 13:13:23,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:13:23,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:13:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -358427577, now seen corresponding path program 1 times [2023-12-23 13:13:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:13:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453039717] [2023-12-23 13:13:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:13:23,685 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 [2023-12-23 13:13:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:13:23,686 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) [2023-12-23 13:13:23,688 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 [2023-12-23 13:13:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:13:24,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 13:13:24,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:13:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-23 13:13:24,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:13:24,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:13:24,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453039717] [2023-12-23 13:13:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453039717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:13:24,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:13:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 13:13:24,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227570622] [2023-12-23 13:13:24,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:13:24,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 13:13:24,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:13:24,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 13:13:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 13:13:24,422 INFO L87 Difference]: Start difference. First operand 88 states and 137 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 13:13:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:13:24,786 INFO L93 Difference]: Finished difference Result 242 states and 379 transitions. [2023-12-23 13:13:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 13:13:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 217 [2023-12-23 13:13:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:13:24,790 INFO L225 Difference]: With dead ends: 242 [2023-12-23 13:13:24,790 INFO L226 Difference]: Without dead ends: 155 [2023-12-23 13:13:24,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 13:13:24,791 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 141 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 13:13:24,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 553 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 13:13:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-23 13:13:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 88. [2023-12-23 13:13:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 13:13:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 136 transitions. [2023-12-23 13:13:24,816 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 136 transitions. Word has length 217 [2023-12-23 13:13:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:13:24,818 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 136 transitions. [2023-12-23 13:13:24,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2023-12-23 13:13:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 136 transitions. [2023-12-23 13:13:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-23 13:13:24,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:13:24,824 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:13:24,842 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 [2023-12-23 13:13:25,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-23 13:13:25,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:13:25,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:13:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1167774203, now seen corresponding path program 1 times [2023-12-23 13:13:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:13:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759558335] [2023-12-23 13:13:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:13:25,026 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 [2023-12-23 13:13:25,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:13:25,027 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2023-12-23 13:13:25,030 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 (4)] Waiting until timeout for monitored process [2023-12-23 13:13:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:13:25,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 13:13:25,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:13:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 328 proven. 186 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2023-12-23 13:13:28,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:13:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 2278 trivial. 0 not checked. [2023-12-23 13:13:29,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:13:29,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759558335] [2023-12-23 13:13:29,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759558335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 13:13:29,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:13:29,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-23 13:13:29,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912145199] [2023-12-23 13:13:29,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:13:29,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-23 13:13:29,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:13:29,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-23 13:13:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-23 13:13:29,049 INFO L87 Difference]: Start difference. First operand 88 states and 136 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 3 states have call successors, (67), 3 states have call predecessors, (67), 5 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-23 13:13:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:13:30,743 INFO L93 Difference]: Finished difference Result 185 states and 279 transitions. [2023-12-23 13:13:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-23 13:13:30,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 3 states have call successors, (67), 3 states have call predecessors, (67), 5 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 217 [2023-12-23 13:13:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:13:30,745 INFO L225 Difference]: With dead ends: 185 [2023-12-23 13:13:30,745 INFO L226 Difference]: Without dead ends: 98 [2023-12-23 13:13:30,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 423 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2023-12-23 13:13:30,747 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 135 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-23 13:13:30,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 238 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-23 13:13:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-23 13:13:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2023-12-23 13:13:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 13:13:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-12-23 13:13:30,756 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 217 [2023-12-23 13:13:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:13:30,757 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-12-23 13:13:30,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 3 states have call successors, (67), 3 states have call predecessors, (67), 5 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2023-12-23 13:13:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-12-23 13:13:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-23 13:13:30,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:13:30,759 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:13:30,776 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 (4)] Ended with exit code 0 [2023-12-23 13:13:30,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 [2023-12-23 13:13:30,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:13:30,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:13:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash 607233159, now seen corresponding path program 1 times [2023-12-23 13:13:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:13:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326500461] [2023-12-23 13:13:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:13:30,976 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 [2023-12-23 13:13:30,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:13:30,977 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) [2023-12-23 13:13:30,990 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 [2023-12-23 13:13:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:13:31,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 13:13:31,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:13:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1102 proven. 162 refuted. 0 times theorem prover too weak. 1116 trivial. 0 not checked. [2023-12-23 13:13:33,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:13:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 36 proven. 165 refuted. 0 times theorem prover too weak. 2179 trivial. 0 not checked. [2023-12-23 13:13:35,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:13:35,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326500461] [2023-12-23 13:13:35,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326500461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 13:13:35,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:13:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-23 13:13:35,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394073033] [2023-12-23 13:13:35,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:13:35,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 13:13:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:13:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 13:13:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-23 13:13:35,172 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (69), 3 states have call predecessors, (69), 7 states have return successors, (70), 2 states have call predecessors, (70), 3 states have call successors, (70) [2023-12-23 13:13:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:13:37,803 INFO L93 Difference]: Finished difference Result 223 states and 319 transitions. [2023-12-23 13:13:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-23 13:13:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (69), 3 states have call predecessors, (69), 7 states have return successors, (70), 2 states have call predecessors, (70), 3 states have call successors, (70) Word has length 217 [2023-12-23 13:13:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:13:37,805 INFO L225 Difference]: With dead ends: 223 [2023-12-23 13:13:37,805 INFO L226 Difference]: Without dead ends: 128 [2023-12-23 13:13:37,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 421 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=215, Invalid=435, Unknown=0, NotChecked=0, Total=650 [2023-12-23 13:13:37,807 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 99 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-23 13:13:37,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 363 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-23 13:13:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-23 13:13:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 104. [2023-12-23 13:13:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 63 states have internal predecessors, (74), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-23 13:13:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2023-12-23 13:13:37,820 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 217 [2023-12-23 13:13:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:13:37,820 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2023-12-23 13:13:37,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 3 states have call successors, (69), 3 states have call predecessors, (69), 7 states have return successors, (70), 2 states have call predecessors, (70), 3 states have call successors, (70) [2023-12-23 13:13:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2023-12-23 13:13:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-23 13:13:37,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:13:37,822 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 13:13:37,840 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 [2023-12-23 13:13:38,037 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 [2023-12-23 13:13:38,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:13:38,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:13:38,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1322582777, now seen corresponding path program 1 times [2023-12-23 13:13:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:13:38,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336364468] [2023-12-23 13:13:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:13:38,039 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 [2023-12-23 13:13:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:13:38,040 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2023-12-23 13:13:38,071 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 (6)] Waiting until timeout for monitored process [2023-12-23 13:13:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:13:38,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-23 13:13:38,548 INFO L285 TraceCheckSpWp]: Computing forward predicates...