/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/bary_diverge.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 05:50:17,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 05:50:17,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 05:50:17,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 05:50:17,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 05:50:17,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 05:50:17,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 05:50:17,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 05:50:17,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 05:50:17,121 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 05:50:17,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 05:50:17,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 05:50:17,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 05:50:17,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 05:50:17,122 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 05:50:17,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 05:50:17,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 05:50:17,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 05:50:17,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 05:50:17,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 05:50:17,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 05:50:17,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 05:50:17,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 05:50:17,128 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 05:50:17,129 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 05:50:17,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 05:50:17,129 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 05:50:17,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 05:50:17,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 05:50:17,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 05:50:17,129 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 05:50:17,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 05:50:17,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 05:50:17,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 05:50:17,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:50:17,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 05:50:17,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 05:50:17,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 05:50:17,131 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 05:50:17,131 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 05:50:17,132 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 05:50:17,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 05:50:17,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 05:50:17,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 05:50:17,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:17,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 05:50:17,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 05:50:17,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 05:50:17,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 05:50:17,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 05:50:17,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/bary_diverge.c [2024-11-03 05:50:18,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 05:50:18,811 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 05:50:18,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/bary_diverge.c [2024-11-03 05:50:18,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04753deeb/5f03dc075c3349739be567a7521885ab/FLAG541c38a6a [2024-11-03 05:50:18,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04753deeb/5f03dc075c3349739be567a7521885ab [2024-11-03 05:50:18,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 05:50:18,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 05:50:18,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 05:50:18,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 05:50:18,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 05:50:18,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:50:18" (1/1) ... [2024-11-03 05:50:18,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9569a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:18, skipping insertion in model container [2024-11-03 05:50:18,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:50:18" (1/1) ... [2024-11-03 05:50:18,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 05:50:18,974 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/bary_diverge.c[632,645] [2024-11-03 05:50:18,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:50:18,992 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 05:50:19,001 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/bary_diverge.c[632,645] [2024-11-03 05:50:19,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:50:19,016 INFO L204 MainTranslator]: Completed translation [2024-11-03 05:50:19,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19 WrapperNode [2024-11-03 05:50:19,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 05:50:19,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 05:50:19,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 05:50:19,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 05:50:19,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,038 INFO L138 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2024-11-03 05:50:19,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 05:50:19,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 05:50:19,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 05:50:19,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 05:50:19,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,053 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]. [2024-11-03 05:50:19,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 05:50:19,064 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 05:50:19,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 05:50:19,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 05:50:19,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (1/1) ... [2024-11-03 05:50:19,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:50:19,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 05:50:19,110 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) [2024-11-03 05:50:19,113 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 [2024-11-03 05:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 05:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2024-11-03 05:50:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2024-11-03 05:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 05:50:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 05:50:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 05:50:19,210 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 05:50:19,211 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 05:50:23,376 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-03 05:50:23,376 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 05:50:23,387 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 05:50:23,387 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 05:50:23,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:50:23 BoogieIcfgContainer [2024-11-03 05:50:23,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 05:50:23,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 05:50:23,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 05:50:23,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 05:50:23,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:50:18" (1/3) ... [2024-11-03 05:50:23,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262468f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:50:23, skipping insertion in model container [2024-11-03 05:50:23,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:50:19" (2/3) ... [2024-11-03 05:50:23,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262468f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:50:23, skipping insertion in model container [2024-11-03 05:50:23,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:50:23" (3/3) ... [2024-11-03 05:50:23,411 INFO L112 eAbstractionObserver]: Analyzing ICFG bary_diverge.c [2024-11-03 05:50:23,421 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 05:50:23,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 05:50:23,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 05:50:23,474 INFO L333 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, 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;@5b558ac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 05:50:23,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 05:50:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 05:50:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-03 05:50:23,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:50:23,482 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:50:23,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:50:23,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:50:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 372835822, now seen corresponding path program 1 times [2024-11-03 05:50:23,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:50:23,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220529743] [2024-11-03 05:50:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:50:23,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:50:23,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:50:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 05:50:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:50:23,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 05:50:23,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:50:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:50:23,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:50:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-03 05:50:23,612 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:50:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220529743] [2024-11-03 05:50:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1220529743] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:50:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:50:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-03 05:50:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493632172] [2024-11-03 05:50:23,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:50:23,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 05:50:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:50:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 05:50:23,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 05:50:23,646 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 05:50:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:50:23,668 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2024-11-03 05:50:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 05:50:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-03 05:50:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:50:23,679 INFO L225 Difference]: With dead ends: 61 [2024-11-03 05:50:23,680 INFO L226 Difference]: Without dead ends: 28 [2024-11-03 05:50:23,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 05:50:23,685 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:50:23,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:50:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-03 05:50:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-03 05:50:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 05:50:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-03 05:50:23,712 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2024-11-03 05:50:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:50:23,713 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-03 05:50:23,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 05:50:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-03 05:50:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-03 05:50:23,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:50:23,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:50:23,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 05:50:23,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:23,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:50:23,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:50:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -920244306, now seen corresponding path program 1 times [2024-11-03 05:50:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:50:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273778450] [2024-11-03 05:50:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:50:23,919 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:50:23,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:50:23,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 05:50:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:50:23,984 WARN L253 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 05:50:23,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:50:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-03 05:50:24,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:50:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-03 05:50:25,644 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:50:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273778450] [2024-11-03 05:50:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [273778450] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:50:25,644 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:50:25,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 18 [2024-11-03 05:50:25,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827064326] [2024-11-03 05:50:25,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:50:25,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 05:50:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:50:25,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 05:50:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:50:25,650 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:50:30,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 05:50:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:50:30,664 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-03 05:50:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 05:50:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2024-11-03 05:50:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:50:30,668 INFO L225 Difference]: With dead ends: 75 [2024-11-03 05:50:30,668 INFO L226 Difference]: Without dead ends: 73 [2024-11-03 05:50:30,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2024-11-03 05:50:30,675 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:50:30,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 223 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-03 05:50:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-03 05:50:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 38. [2024-11-03 05:50:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-03 05:50:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2024-11-03 05:50:30,702 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 22 [2024-11-03 05:50:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:50:30,702 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2024-11-03 05:50:30,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:50:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2024-11-03 05:50:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-03 05:50:30,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:50:30,707 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:50:30,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 05:50:30,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:30,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:50:30,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:50:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -920184724, now seen corresponding path program 1 times [2024-11-03 05:50:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:50:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268383321] [2024-11-03 05:50:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:50:30,910 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:30,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:50:30,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:50:30,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 05:50:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:50:30,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 05:50:30,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:50:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 05:50:31,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:50:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 05:50:31,153 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:50:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268383321] [2024-11-03 05:50:31,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1268383321] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:50:31,153 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:50:31,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 05:50:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17112883] [2024-11-03 05:50:31,153 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:50:31,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 05:50:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:50:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 05:50:31,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 05:50:31,155 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 05:50:35,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 05:50:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:50:35,351 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-11-03 05:50:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 05:50:35,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2024-11-03 05:50:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:50:35,385 INFO L225 Difference]: With dead ends: 73 [2024-11-03 05:50:35,385 INFO L226 Difference]: Without dead ends: 51 [2024-11-03 05:50:35,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 05:50:35,387 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:50:35,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-03 05:50:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-03 05:50:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-03 05:50:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-03 05:50:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-03 05:50:35,398 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 22 [2024-11-03 05:50:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:50:35,402 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-03 05:50:35,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 05:50:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-03 05:50:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 05:50:35,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:50:35,404 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:50:35,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 05:50:35,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:35,604 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:50:35,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:50:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash -961441789, now seen corresponding path program 1 times [2024-11-03 05:50:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:50:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60596250] [2024-11-03 05:50:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:50:35,607 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:35,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:50:35,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:50:35,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 05:50:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:50:35,695 WARN L253 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-03 05:50:35,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:50:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 05:50:37,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:50:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-03 05:50:38,226 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:50:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60596250] [2024-11-03 05:50:38,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [60596250] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:50:38,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:50:38,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 23 [2024-11-03 05:50:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242758120] [2024-11-03 05:50:38,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:50:38,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 05:50:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:50:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 05:50:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:50:38,229 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 05:50:41,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 05:50:47,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 05:50:50,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 05:50:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:50:51,020 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-11-03 05:50:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-03 05:50:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2024-11-03 05:50:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:50:51,022 INFO L225 Difference]: With dead ends: 83 [2024-11-03 05:50:51,022 INFO L226 Difference]: Without dead ends: 81 [2024-11-03 05:50:51,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 05:50:51,023 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 49 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:50:51,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 205 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 144 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2024-11-03 05:50:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-03 05:50:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2024-11-03 05:50:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 43 states have internal predecessors, (46), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 05:50:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2024-11-03 05:50:51,033 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 52 [2024-11-03 05:50:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:50:51,034 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2024-11-03 05:50:51,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-03 05:50:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2024-11-03 05:50:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 05:50:51,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:50:51,035 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:50:51,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 05:50:51,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:51,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:50:51,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:50:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -961382207, now seen corresponding path program 1 times [2024-11-03 05:50:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:50:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689950582] [2024-11-03 05:50:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:50:51,240 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:50:51,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:50:51,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:50:51,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 05:50:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:50:51,574 WARN L253 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-03 05:50:51,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:51:36,860 WARN L286 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 05:51:51,131 WARN L286 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-03 05:51:56,766 WARN L286 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 6 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)