/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-pe-ci_file-65.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 07:37:08,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 07:37:08,725 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 07:37:08,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 07:37:08,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 07:37:08,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 07:37:08,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 07:37:08,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 07:37:08,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 07:37:08,765 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 07:37:08,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 07:37:08,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 07:37:08,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 07:37:08,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 07:37:08,767 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 07:37:08,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 07:37:08,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 07:37:08,768 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 07:37:08,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 07:37:08,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 07:37:08,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 07:37:08,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 07:37:08,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 07:37:08,770 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 07:37:08,771 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 07:37:08,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 07:37:08,771 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 07:37:08,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 07:37:08,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 07:37:08,772 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 07:37:08,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 07:37:08,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 07:37:08,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 07:37:08,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 07:37:08,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 07:37:08,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 07:37:08,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 07:37:08,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 07:37:08,774 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 07:37:08,774 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 07:37:08,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 07:37:08,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 07:37:08,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 07:37:08,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 07:37:08,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 07:37:08,776 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 07:37:08,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 07:37:09,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 07:37:09,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 07:37:09,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 07:37:09,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 07:37:09,048 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 07:37:09,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-65.i [2023-12-23 07:37:10,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 07:37:10,450 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 07:37:10,450 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-65.i [2023-12-23 07:37:10,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d7b211f/d9237ac6cdb246c89d27eb45162cdd4d/FLAGaf7e5e001 [2023-12-23 07:37:10,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d7b211f/d9237ac6cdb246c89d27eb45162cdd4d [2023-12-23 07:37:10,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 07:37:10,485 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 07:37:10,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 07:37:10,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 07:37:10,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 07:37:10,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cda0de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10, skipping insertion in model container [2023-12-23 07:37:10,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 07:37:10,690 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-pe-ci_file-65.i[919,932] [2023-12-23 07:37:10,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 07:37:10,796 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 07:37:10,810 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-pe-ci_file-65.i[919,932] [2023-12-23 07:37:10,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 07:37:10,875 INFO L206 MainTranslator]: Completed translation [2023-12-23 07:37:10,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10 WrapperNode [2023-12-23 07:37:10,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 07:37:10,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 07:37:10,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 07:37:10,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 07:37:10,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,923 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 182 [2023-12-23 07:37:10,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 07:37:10,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 07:37:10,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 07:37:10,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 07:37:10,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,961 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 07:37:10,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:10,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 07:37:11,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 07:37:11,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 07:37:11,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 07:37:11,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (1/1) ... [2023-12-23 07:37:11,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 07:37:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 07:37:11,045 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 07:37:11,071 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 07:37:11,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 07:37:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 07:37:11,079 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 07:37:11,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 07:37:11,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 07:37:11,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 07:37:11,188 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 07:37:11,191 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 07:37:12,367 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 07:37:12,418 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 07:37:12,418 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 07:37:12,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:12 BoogieIcfgContainer [2023-12-23 07:37:12,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 07:37:12,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 07:37:12,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 07:37:12,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 07:37:12,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:37:10" (1/3) ... [2023-12-23 07:37:12,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff5e33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:12, skipping insertion in model container [2023-12-23 07:37:12,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:37:10" (2/3) ... [2023-12-23 07:37:12,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff5e33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:37:12, skipping insertion in model container [2023-12-23 07:37:12,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:37:12" (3/3) ... [2023-12-23 07:37:12,431 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-65.i [2023-12-23 07:37:12,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 07:37:12,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 07:37:12,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 07:37:12,512 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;@1e5a9e7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 07:37:12,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 07:37:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 47 states have internal predecessors, (71), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-23 07:37:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-23 07:37:12,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:37:12,535 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:37:12,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:37:12,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:37:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1610545069, now seen corresponding path program 1 times [2023-12-23 07:37:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:37:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379944806] [2023-12-23 07:37:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:37:12,559 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 07:37:12,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:37:12,564 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 07:37:12,596 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 07:37:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:37:12,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 07:37:12,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:37:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-23 07:37:13,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 07:37:13,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:37:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379944806] [2023-12-23 07:37:13,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379944806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 07:37:13,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 07:37:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 07:37:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741024838] [2023-12-23 07:37:13,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 07:37:13,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 07:37:13,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:37:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 07:37:13,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 07:37:13,048 INFO L87 Difference]: Start difference. First operand has 71 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 47 states have internal predecessors, (71), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-23 07:37:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:37:13,808 INFO L93 Difference]: Finished difference Result 136 states and 244 transitions. [2023-12-23 07:37:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 07:37:13,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2023-12-23 07:37:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:37:13,835 INFO L225 Difference]: With dead ends: 136 [2023-12-23 07:37:13,835 INFO L226 Difference]: Without dead ends: 66 [2023-12-23 07:37:13,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 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 07:37:13,842 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-23 07:37:13,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-23 07:37:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-23 07:37:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-23 07:37:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-23 07:37:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 102 transitions. [2023-12-23 07:37:13,894 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 102 transitions. Word has length 142 [2023-12-23 07:37:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:37:13,894 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 102 transitions. [2023-12-23 07:37:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-23 07:37:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 102 transitions. [2023-12-23 07:37:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-23 07:37:13,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:37:13,900 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:37:13,909 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 (2)] Forceful destruction successful, exit code 0 [2023-12-23 07:37:14,100 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 07:37:14,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:37:14,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:37:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1864789077, now seen corresponding path program 1 times [2023-12-23 07:37:14,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:37:14,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777110234] [2023-12-23 07:37:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:37:14,104 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 07:37:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:37:14,105 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 07:37:14,134 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 07:37:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:37:14,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 07:37:14,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:37:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 393 proven. 45 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-12-23 07:37:14,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 07:37:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-23 07:37:15,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:37:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777110234] [2023-12-23 07:37:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777110234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 07:37:15,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 07:37:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 07:37:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505071301] [2023-12-23 07:37:15,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 07:37:15,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 07:37:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:37:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 07:37:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 07:37:15,148 INFO L87 Difference]: Start difference. First operand 66 states and 102 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-23 07:37:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:37:16,297 INFO L93 Difference]: Finished difference Result 149 states and 226 transitions. [2023-12-23 07:37:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 07:37:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 142 [2023-12-23 07:37:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:37:16,299 INFO L225 Difference]: With dead ends: 149 [2023-12-23 07:37:16,300 INFO L226 Difference]: Without dead ends: 84 [2023-12-23 07:37:16,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-23 07:37:16,302 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 239 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 07:37:16,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 179 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 07:37:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-23 07:37:16,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2023-12-23 07:37:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 48 states have (on average 1.3125) internal successors, (63), 49 states have internal predecessors, (63), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-23 07:37:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 119 transitions. [2023-12-23 07:37:16,317 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 119 transitions. Word has length 142 [2023-12-23 07:37:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:37:16,318 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 119 transitions. [2023-12-23 07:37:16,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-23 07:37:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 119 transitions. [2023-12-23 07:37:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-23 07:37:16,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:37:16,320 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:37:16,333 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 07:37:16,533 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 07:37:16,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:37:16,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:37:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1300644821, now seen corresponding path program 1 times [2023-12-23 07:37:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:37:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094347571] [2023-12-23 07:37:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:37:16,535 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 07:37:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:37:16,537 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 07:37:16,540 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 07:37:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:37:16,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 07:37:16,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:37:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-23 07:37:16,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 07:37:16,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:37:16,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094347571] [2023-12-23 07:37:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094347571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 07:37:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 07:37:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 07:37:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844820548] [2023-12-23 07:37:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 07:37:16,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 07:37:16,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:37:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 07:37:16,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 07:37:16,838 INFO L87 Difference]: Start difference. First operand 79 states and 119 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 07:37:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:37:17,666 INFO L93 Difference]: Finished difference Result 163 states and 239 transitions. [2023-12-23 07:37:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 07:37:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-23 07:37:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:37:17,669 INFO L225 Difference]: With dead ends: 163 [2023-12-23 07:37:17,669 INFO L226 Difference]: Without dead ends: 94 [2023-12-23 07:37:17,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 07:37:17,671 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 51 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-23 07:37:17,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 185 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-23 07:37:17,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-23 07:37:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2023-12-23 07:37:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.25) internal successors, (70), 57 states have internal predecessors, (70), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-23 07:37:17,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 134 transitions. [2023-12-23 07:37:17,685 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 134 transitions. Word has length 143 [2023-12-23 07:37:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:37:17,686 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 134 transitions. [2023-12-23 07:37:17,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-23 07:37:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 134 transitions. [2023-12-23 07:37:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-23 07:37:17,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:37:17,688 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:37:17,700 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 (4)] Forceful destruction successful, exit code 0 [2023-12-23 07:37:17,898 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 07:37:17,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:37:17,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:37:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1980703191, now seen corresponding path program 1 times [2023-12-23 07:37:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:37:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774073081] [2023-12-23 07:37:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:37:17,900 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 07:37:17,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:37:17,901 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 07:37:17,917 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 07:37:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:37:18,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 07:37:18,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:37:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 327 proven. 12 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-12-23 07:37:18,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 07:37:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-23 07:37:18,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:37:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774073081] [2023-12-23 07:37:18,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774073081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 07:37:18,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 07:37:18,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 07:37:18,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888272893] [2023-12-23 07:37:18,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 07:37:18,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 07:37:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:37:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 07:37:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 07:37:18,519 INFO L87 Difference]: Start difference. First operand 93 states and 134 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-23 07:37:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:37:20,216 INFO L93 Difference]: Finished difference Result 216 states and 301 transitions. [2023-12-23 07:37:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 07:37:20,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 143 [2023-12-23 07:37:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:37:20,219 INFO L225 Difference]: With dead ends: 216 [2023-12-23 07:37:20,219 INFO L226 Difference]: Without dead ends: 143 [2023-12-23 07:37:20,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 07:37:20,221 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 112 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-23 07:37:20,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 279 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-23 07:37:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-23 07:37:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 123. [2023-12-23 07:37:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 44 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-23 07:37:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2023-12-23 07:37:20,240 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 143 [2023-12-23 07:37:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:37:20,241 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2023-12-23 07:37:20,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-23 07:37:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2023-12-23 07:37:20,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-23 07:37:20,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:37:20,243 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:37:20,254 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 07:37:20,452 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 07:37:20,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:37:20,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:37:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1982550233, now seen corresponding path program 1 times [2023-12-23 07:37:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:37:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867000323] [2023-12-23 07:37:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:37:20,454 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 07:37:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:37:20,455 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 07:37:20,458 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 07:37:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:37:20,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-23 07:37:20,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:37:46,315 WARN L293 SmtUtils]: Spent 9.93s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 07:38:07,588 WARN L293 SmtUtils]: Spent 9.56s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 07:38:30,721 WARN L293 SmtUtils]: Spent 8.83s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 07:38:59,918 WARN L293 SmtUtils]: Spent 10.75s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 07:41:12,844 WARN L293 SmtUtils]: Spent 11.69s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)