/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 --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy WOLF -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 05:43:38,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 05:43:38,625 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 05:43:38,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 05:43:38,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 05:43:38,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 05:43:38,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 05:43:38,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 05:43:38,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 05:43:38,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 05:43:38,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 05:43:38,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 05:43:38,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 05:43:38,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 05:43:38,657 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 05:43:38,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 05:43:38,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 05:43:38,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 05:43:38,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 05:43:38,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 05:43:38,659 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 05:43:38,662 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 05:43:38,662 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 05:43:38,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 05:43:38,663 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 05:43:38,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 05:43:38,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 05:43:38,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 05:43:38,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 05:43:38,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 05:43:38,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 05:43:38,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 05:43:38,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 05:43:38,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 05:43:38,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 05:43:38,665 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 05:43:38,666 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 05:43:38,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 05:43:38,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 05:43:38,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 05:43:38,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 05:43:38,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> WOLF [2024-11-06 05:43:38,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 05:43:38,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 05:43:38,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 05:43:38,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 05:43:38,909 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 05:43:38,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c [2024-11-06 05:43:40,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 05:43:40,643 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 05:43:40,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c [2024-11-06 05:43:40,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fbe0a35/8513c151c3c9423d9272d47035f027be/FLAG227dc970b [2024-11-06 05:43:40,848 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fbe0a35/8513c151c3c9423d9272d47035f027be [2024-11-06 05:43:40,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 05:43:40,852 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 05:43:40,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 05:43:40,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 05:43:40,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 05:43:40,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:43:40" (1/1) ... [2024-11-06 05:43:40,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ed1722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:40, skipping insertion in model container [2024-11-06 05:43:40,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:43:40" (1/1) ... [2024-11-06 05:43:40,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 05:43:41,229 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c[1325,1338] [2024-11-06 05:43:41,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 05:43:41,823 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 05:43:41,834 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c[1325,1338] [2024-11-06 05:43:42,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 05:43:42,150 INFO L204 MainTranslator]: Completed translation [2024-11-06 05:43:42,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42 WrapperNode [2024-11-06 05:43:42,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 05:43:42,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 05:43:42,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 05:43:42,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 05:43:42,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,479 INFO L138 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6268 [2024-11-06 05:43:42,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 05:43:42,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 05:43:42,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 05:43:42,481 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 05:43:42,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,585 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,697 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]. [2024-11-06 05:43:42,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 05:43:42,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 05:43:42,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 05:43:42,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 05:43:42,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (1/1) ... [2024-11-06 05:43:42,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 05:43:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 05:43:42,915 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) [2024-11-06 05:43:42,922 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 [2024-11-06 05:43:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 05:43:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 05:43:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 05:43:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 05:43:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 05:43:42,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 05:43:43,694 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 05:43:43,696 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 05:43:49,015 INFO L? ?]: Removed 1903 outVars from TransFormulas that were not future-live. [2024-11-06 05:43:49,016 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 05:43:49,027 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 05:43:49,027 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 05:43:49,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:43:49 BoogieIcfgContainer [2024-11-06 05:43:49,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 05:43:49,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 05:43:49,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 05:43:49,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 05:43:49,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:43:40" (1/3) ... [2024-11-06 05:43:49,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da69654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:43:49, skipping insertion in model container [2024-11-06 05:43:49,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:42" (2/3) ... [2024-11-06 05:43:49,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da69654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:43:49, skipping insertion in model container [2024-11-06 05:43:49,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:43:49" (3/3) ... [2024-11-06 05:43:49,040 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n5_w16_d32_e0.c [2024-11-06 05:43:49,054 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 05:43:49,054 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 05:43:49,096 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 05:43:49,102 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;@6b309505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 05:43:49,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 05:43:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 05:43:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-06 05:43:49,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 05:43:49,117 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 05:43:49,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 05:43:49,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 05:43:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash -726051243, now seen corresponding path program 1 times [2024-11-06 05:43:49,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 05:43:49,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017409315] [2024-11-06 05:43:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 05:43:49,143 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 [2024-11-06 05:43:49,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 05:43:49,147 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) [2024-11-06 05:43:49,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-06 05:43:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 05:43:51,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-06 05:43:51,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 05:43:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-06 05:43:51,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 05:43:51,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 05:43:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017409315] [2024-11-06 05:43:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017409315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 05:43:51,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 05:43:51,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 05:43:51,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621733099] [2024-11-06 05:43:51,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 05:43:51,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 05:43:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 05:43:51,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 05:43:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 05:43:51,189 INFO L87 Difference]: Start difference. First operand has 46 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-06 05:43:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 05:43:51,207 INFO L93 Difference]: Finished difference Result 87 states and 138 transitions. [2024-11-06 05:43:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 05:43:51,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 101 [2024-11-06 05:43:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 05:43:51,218 INFO L225 Difference]: With dead ends: 87 [2024-11-06 05:43:51,218 INFO L226 Difference]: Without dead ends: 43 [2024-11-06 05:43:51,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 05:43:51,223 INFO L432 NwaCegarLoop]: 58 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, 58 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 [2024-11-06 05:43:51,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 05:43:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-06 05:43:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-06 05:43:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-06 05:43:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-06 05:43:51,265 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 101 [2024-11-06 05:43:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 05:43:51,265 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-06 05:43:51,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-06 05:43:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-06 05:43:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-06 05:43:51,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 05:43:51,272 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 05:43:51,301 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 [2024-11-06 05:43:51,473 WARN L453 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 [2024-11-06 05:43:51,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 05:43:51,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 05:43:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash -520200651, now seen corresponding path program 1 times [2024-11-06 05:43:51,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 05:43:51,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495867610] [2024-11-06 05:43:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 05:43:51,481 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 [2024-11-06 05:43:51,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 05:43:51,485 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) [2024-11-06 05:43:51,486 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 [2024-11-06 05:43:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 05:43:57,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 05:43:57,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 05:43:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-06 05:43:57,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 05:43:57,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 05:43:57,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495867610] [2024-11-06 05:43:57,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495867610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 05:43:57,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 05:43:57,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 05:43:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351155141] [2024-11-06 05:43:57,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 05:43:57,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 05:43:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 05:43:57,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 05:43:57,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 05:43:57,825 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-06 05:43:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 05:43:58,808 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2024-11-06 05:43:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 05:43:58,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 101 [2024-11-06 05:43:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 05:43:58,811 INFO L225 Difference]: With dead ends: 79 [2024-11-06 05:43:58,811 INFO L226 Difference]: Without dead ends: 77 [2024-11-06 05:43:58,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 05:43:58,813 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-06 05:43:58,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-06 05:43:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-06 05:43:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-06 05:43:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-06 05:43:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2024-11-06 05:43:58,833 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 101 [2024-11-06 05:43:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 05:43:58,835 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2024-11-06 05:43:58,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-06 05:43:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2024-11-06 05:43:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-06 05:43:58,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 05:43:58,841 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-06 05:43:58,867 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 [2024-11-06 05:43:59,042 WARN L453 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 [2024-11-06 05:43:59,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 05:43:59,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 05:43:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash -511202845, now seen corresponding path program 1 times [2024-11-06 05:43:59,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 05:43:59,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025470536] [2024-11-06 05:43:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 05:43:59,048 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 [2024-11-06 05:43:59,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 05:43:59,049 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) [2024-11-06 05:43:59,051 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 [2024-11-06 05:44:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 05:44:29,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 4467 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 05:44:29,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 05:44:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2024-11-06 05:44:30,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 05:44:30,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-06 05:44:30,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025470536] [2024-11-06 05:44:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025470536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 05:44:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892611584] [2024-11-06 05:44:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 05:44:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 05:44:30,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 05:44:30,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 05:44:30,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-06 05:44:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 05:44:36,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 4467 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 05:44:36,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 05:44:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2024-11-06 05:44:37,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 05:44:37,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1892611584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 05:44:37,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 05:44:37,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-06 05:44:37,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332656677] [2024-11-06 05:44:37,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 05:44:37,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 05:44:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-06 05:44:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 05:44:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-06 05:44:37,709 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-06 05:44:40,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 05:44:40,227 INFO L93 Difference]: Finished difference Result 114 states and 161 transitions. [2024-11-06 05:44:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 05:44:40,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 200 [2024-11-06 05:44:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 05:44:40,231 INFO L225 Difference]: With dead ends: 114 [2024-11-06 05:44:40,231 INFO L226 Difference]: Without dead ends: 112 [2024-11-06 05:44:40,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-06 05:44:40,233 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-06 05:44:40,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 232 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-06 05:44:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-06 05:44:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-06 05:44:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-06 05:44:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 159 transitions. [2024-11-06 05:44:40,259 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 159 transitions. Word has length 200 [2024-11-06 05:44:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 05:44:40,260 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 159 transitions. [2024-11-06 05:44:40,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-06 05:44:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 159 transitions. [2024-11-06 05:44:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-06 05:44:40,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 05:44:40,268 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-06 05:44:40,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-06 05:44:40,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-06 05:44:40,669 WARN L453 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-06 05:44:40,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 05:44:40,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 05:44:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2140848267, now seen corresponding path program 2 times [2024-11-06 05:44:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-06 05:44:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405707564] [2024-11-06 05:44:40,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 05:44:40,677 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 [2024-11-06 05:44:40,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-06 05:44:40,679 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) [2024-11-06 05:44:40,680 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