/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-11.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 06:55:27,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 06:55:27,311 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 06:55:27,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 06:55:27,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 06:55:27,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 06:55:27,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 06:55:27,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 06:55:27,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 06:55:27,342 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 06:55:27,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 06:55:27,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 06:55:27,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 06:55:27,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 06:55:27,344 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 06:55:27,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 06:55:27,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 06:55:27,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 06:55:27,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 06:55:27,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 06:55:27,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 06:55:27,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 06:55:27,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 06:55:27,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 06:55:27,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 06:55:27,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 06:55:27,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 06:55:27,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 06:55:27,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 06:55:27,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 06:55:27,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 06:55:27,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 06:55:27,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 06:55:27,349 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 06:55:27,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 06:55:27,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 06:55:27,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 06:55:27,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 06:55:27,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 06:55:27,536 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 06:55:27,538 INFO L431 ainManager$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-11.i [2023-12-23 06:55:28,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 06:55:28,871 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 06:55:28,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-11.i [2023-12-23 06:55:28,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbc979aa/d7de60a489c242c58afdc756d6acc5ee/FLAGc61ea2044 [2023-12-23 06:55:28,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efbc979aa/d7de60a489c242c58afdc756d6acc5ee [2023-12-23 06:55:28,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 06:55:28,901 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 06:55:28,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 06:55:28,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 06:55:28,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 06:55:28,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:55:28" (1/1) ... [2023-12-23 06:55:28,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d1eb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:28, skipping insertion in model container [2023-12-23 06:55:28,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:55:28" (1/1) ... [2023-12-23 06:55:28,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 06:55:29,040 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-11.i[919,932] [2023-12-23 06:55:29,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 06:55:29,099 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 06:55:29,123 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-11.i[919,932] [2023-12-23 06:55:29,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 06:55:29,179 INFO L206 MainTranslator]: Completed translation [2023-12-23 06:55:29,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29 WrapperNode [2023-12-23 06:55:29,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 06:55:29,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 06:55:29,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 06:55:29,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 06:55:29,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,238 INFO L138 Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 180 [2023-12-23 06:55:29,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 06:55:29,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 06:55:29,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 06:55:29,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 06:55:29,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,276 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 06:55:29,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 06:55:29,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 06:55:29,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 06:55:29,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 06:55:29,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (1/1) ... [2023-12-23 06:55:29,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 06:55:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 06:55:29,334 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 06:55:29,350 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 06:55:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 06:55:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 06:55:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 06:55:29,357 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 06:55:29,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 06:55:29,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 06:55:29,449 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 06:55:29,452 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 06:55:32,932 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 06:55:32,973 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 06:55:32,973 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 06:55:32,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:55:32 BoogieIcfgContainer [2023-12-23 06:55:32,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 06:55:32,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 06:55:32,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 06:55:32,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 06:55:32,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:55:28" (1/3) ... [2023-12-23 06:55:32,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5251e4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:55:32, skipping insertion in model container [2023-12-23 06:55:32,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:55:29" (2/3) ... [2023-12-23 06:55:32,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5251e4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:55:32, skipping insertion in model container [2023-12-23 06:55:32,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:55:32" (3/3) ... [2023-12-23 06:55:32,979 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-11.i [2023-12-23 06:55:32,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 06:55:32,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 06:55:33,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 06:55:33,040 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;@76ae882c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 06:55:33,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 06:55:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 48 states have (on average 1.5625) internal successors, (75), 49 states have internal predecessors, (75), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-23 06:55:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-23 06:55:33,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:55:33,056 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:33,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:55:33,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:55:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -971117491, now seen corresponding path program 1 times [2023-12-23 06:55:33,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:55:33,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026027396] [2023-12-23 06:55:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:55:33,072 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 06:55:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:55:33,086 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 06:55:33,088 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 06:55:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:55:33,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 06:55:33,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:55:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-23 06:55:33,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:55:33,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:55:33,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026027396] [2023-12-23 06:55:33,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026027396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:55:33,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:55:33,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 06:55:33,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448010071] [2023-12-23 06:55:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:55:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 06:55:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:55:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 06:55:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 06:55:33,443 INFO L87 Difference]: Start difference. First operand has 75 states, 48 states have (on average 1.5625) internal successors, (75), 49 states have internal predecessors, (75), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-23 06:55:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:55:33,499 INFO L93 Difference]: Finished difference Result 147 states and 268 transitions. [2023-12-23 06:55:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 06:55:33,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 151 [2023-12-23 06:55:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:55:33,511 INFO L225 Difference]: With dead ends: 147 [2023-12-23 06:55:33,511 INFO L226 Difference]: Without dead ends: 73 [2023-12-23 06:55:33,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 150 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 06:55:33,517 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 06:55:33,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 06:55:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-23 06:55:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-23 06:55:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-23 06:55:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 116 transitions. [2023-12-23 06:55:33,556 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 116 transitions. Word has length 151 [2023-12-23 06:55:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:55:33,556 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 116 transitions. [2023-12-23 06:55:33,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-23 06:55:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 116 transitions. [2023-12-23 06:55:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-23 06:55:33,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:55:33,559 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:33,566 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 06:55:33,759 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 06:55:33,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:55:33,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:55:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash -893796659, now seen corresponding path program 1 times [2023-12-23 06:55:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:55:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123325425] [2023-12-23 06:55:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:55:33,763 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 06:55:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:55:33,764 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 06:55:33,766 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 06:55:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:55:33,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 06:55:33,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:55:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-23 06:55:34,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:55:34,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:55:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123325425] [2023-12-23 06:55:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123325425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:55:34,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:55:34,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 06:55:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395245100] [2023-12-23 06:55:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:55:34,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 06:55:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:55:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 06:55:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 06:55:34,730 INFO L87 Difference]: Start difference. First operand 73 states and 116 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 06:55:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:55:35,061 INFO L93 Difference]: Finished difference Result 218 states and 347 transitions. [2023-12-23 06:55:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 06:55:35,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 151 [2023-12-23 06:55:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:55:35,066 INFO L225 Difference]: With dead ends: 218 [2023-12-23 06:55:35,066 INFO L226 Difference]: Without dead ends: 146 [2023-12-23 06:55:35,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 06:55:35,068 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 117 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 06:55:35,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 390 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 06:55:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-23 06:55:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 116. [2023-12-23 06:55:35,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 06:55:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 182 transitions. [2023-12-23 06:55:35,096 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 182 transitions. Word has length 151 [2023-12-23 06:55:35,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:55:35,097 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 182 transitions. [2023-12-23 06:55:35,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 06:55:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 182 transitions. [2023-12-23 06:55:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-23 06:55:35,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:55:35,099 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:35,111 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 (3)] Ended with exit code 0 [2023-12-23 06:55:35,306 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 06:55:35,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:55:35,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:55:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1324150038, now seen corresponding path program 1 times [2023-12-23 06:55:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:55:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864436814] [2023-12-23 06:55:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:55:35,308 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 06:55:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:55:35,310 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 06:55:35,340 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 06:55:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:55:35,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 06:55:35,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:55:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 269 proven. 60 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-12-23 06:55:35,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 06:55:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-23 06:55:35,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:55:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864436814] [2023-12-23 06:55:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864436814] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 06:55:35,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 06:55:35,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 06:55:35,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6844639] [2023-12-23 06:55:35,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 06:55:35,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 06:55:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:55:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 06:55:35,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 06:55:35,951 INFO L87 Difference]: Start difference. First operand 116 states and 182 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, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-23 06:55:37,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 06:55:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:55:37,736 INFO L93 Difference]: Finished difference Result 204 states and 311 transitions. [2023-12-23 06:55:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 06:55:37,739 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, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 152 [2023-12-23 06:55:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:55:37,741 INFO L225 Difference]: With dead ends: 204 [2023-12-23 06:55:37,741 INFO L226 Difference]: Without dead ends: 132 [2023-12-23 06:55:37,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-23 06:55:37,742 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 123 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 06:55:37,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 181 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 06:55:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-23 06:55:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2023-12-23 06:55:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 06:55:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 184 transitions. [2023-12-23 06:55:37,757 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 184 transitions. Word has length 152 [2023-12-23 06:55:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:55:37,758 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 184 transitions. [2023-12-23 06:55:37,758 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, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-12-23 06:55:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 184 transitions. [2023-12-23 06:55:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-23 06:55:37,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:55:37,759 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:37,766 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 06:55:37,966 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 06:55:37,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:55:37,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:55:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 652521330, now seen corresponding path program 1 times [2023-12-23 06:55:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:55:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429968396] [2023-12-23 06:55:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:55:37,968 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 06:55:37,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:55:37,974 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 06:55:37,974 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 06:55:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:55:38,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 06:55:38,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 06:55:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-23 06:55:38,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 06:55:38,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 06:55:38,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429968396] [2023-12-23 06:55:38,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429968396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 06:55:38,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 06:55:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 06:55:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919264934] [2023-12-23 06:55:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 06:55:38,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 06:55:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 06:55:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 06:55:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 06:55:38,415 INFO L87 Difference]: Start difference. First operand 124 states and 184 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 06:55:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 06:55:39,905 INFO L93 Difference]: Finished difference Result 204 states and 304 transitions. [2023-12-23 06:55:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 06:55:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 153 [2023-12-23 06:55:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 06:55:39,907 INFO L225 Difference]: With dead ends: 204 [2023-12-23 06:55:39,907 INFO L226 Difference]: Without dead ends: 128 [2023-12-23 06:55:39,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 06:55:39,908 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 98 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-23 06:55:39,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 228 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-23 06:55:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-23 06:55:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2023-12-23 06:55:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 06:55:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 181 transitions. [2023-12-23 06:55:39,926 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 181 transitions. Word has length 153 [2023-12-23 06:55:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 06:55:39,927 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 181 transitions. [2023-12-23 06:55:39,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 06:55:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 181 transitions. [2023-12-23 06:55:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-23 06:55:39,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 06:55:39,928 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:39,952 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 06:55:40,135 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 06:55:40,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 06:55:40,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 06:55:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1678123661, now seen corresponding path program 1 times [2023-12-23 06:55:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 06:55:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377549015] [2023-12-23 06:55:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 06:55:40,138 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 06:55:40,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 06:55:40,143 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 06:55:40,143 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 06:55:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 06:55:40,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-23 06:55:40,328 INFO L285 TraceCheckSpWp]: Computing forward predicates...