/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 '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' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 17:56:21,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 17:56:22,036 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 17:56:22,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 17:56:22,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 17:56:22,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 17:56:22,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 17:56:22,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 17:56:22,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 17:56:22,081 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 17:56:22,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 17:56:22,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 17:56:22,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 17:56:22,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 17:56:22,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 17:56:22,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 17:56:22,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 17:56:22,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 17:56:22,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 17:56:22,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 17:56:22,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 17:56:22,085 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 17:56:22,086 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 17:56:22,086 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 17:56:22,086 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 17:56:22,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 17:56:22,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 17:56:22,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 17:56:22,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 17:56:22,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 17:56:22,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 17:56:22,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 17:56:22,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 17:56:22,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 17:56:22,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 17:56:22,094 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 17:56:22,094 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 17:56:22,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 17:56:22,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 17:56:22,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 17:56:22,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 17:56:22,097 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 17:56:22,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-01 17:56:22,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 17:56:22,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 17:56:22,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 17:56:22,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 17:56:22,414 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 17:56:22,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c [2024-11-01 17:56:23,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 17:56:24,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 17:56:24,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c [2024-11-01 17:56:24,392 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2596d6bf/93afbbd3530843d3af057f9d59ff0505/FLAG75ad59989 [2024-11-01 17:56:24,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2596d6bf/93afbbd3530843d3af057f9d59ff0505 [2024-11-01 17:56:24,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 17:56:24,847 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 17:56:24,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 17:56:24,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 17:56:24,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 17:56:24,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:56:24" (1/1) ... [2024-11-01 17:56:24,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a17f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:24, skipping insertion in model container [2024-11-01 17:56:24,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 05:56:24" (1/1) ... [2024-11-01 17:56:25,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 17:56:25,597 WARN L251 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.pgm_protocol.7.prop1-back-serstep.c[1180,1193] [2024-11-01 17:56:26,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 17:56:26,727 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 17:56:26,737 WARN L251 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.pgm_protocol.7.prop1-back-serstep.c[1180,1193] [2024-11-01 17:56:27,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 17:56:27,534 INFO L204 MainTranslator]: Completed translation [2024-11-01 17:56:27,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27 WrapperNode [2024-11-01 17:56:27,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 17:56:27,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 17:56:27,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 17:56:27,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 17:56:27,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:27,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,299 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 16174 [2024-11-01 17:56:28,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 17:56:28,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 17:56:28,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 17:56:28,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 17:56:28,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,610 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]. [2024-11-01 17:56:28,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:28,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:29,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 17:56:29,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 17:56:29,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 17:56:29,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 17:56:29,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (1/1) ... [2024-11-01 17:56:29,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 17:56:29,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 17:56:29,071 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) [2024-11-01 17:56:29,077 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 [2024-11-01 17:56:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 17:56:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 17:56:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 17:56:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 17:56:30,806 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 17:56:30,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 17:57:37,647 INFO L? ?]: Removed 1362 outVars from TransFormulas that were not future-live. [2024-11-01 17:57:37,647 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 17:57:37,655 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 17:57:37,655 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 17:57:37,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:57:37 BoogieIcfgContainer [2024-11-01 17:57:37,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 17:57:37,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 17:57:37,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 17:57:37,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 17:57:37,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 05:56:24" (1/3) ... [2024-11-01 17:57:37,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40859303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:57:37, skipping insertion in model container [2024-11-01 17:57:37,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 05:56:27" (2/3) ... [2024-11-01 17:57:37,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40859303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 05:57:37, skipping insertion in model container [2024-11-01 17:57:37,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 05:57:37" (3/3) ... [2024-11-01 17:57:37,662 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.7.prop1-back-serstep.c [2024-11-01 17:57:37,676 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 17:57:37,676 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 17:57:37,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 17:57:37,736 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;@8f453e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 17:57:37,736 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 17:57:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 17:57:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 17:57:37,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 17:57:37,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 17:57:37,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 17:57:37,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 17:57:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 17:57:37,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 17:57:37,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001465071] [2024-11-01 17:57:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 17:57:37,760 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 [2024-11-01 17:57:37,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 17:57:37,763 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) [2024-11-01 17:57:37,778 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 [2024-11-01 17:57:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 17:57:42,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-01 17:57:42,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 17:57:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 17:57:43,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 17:57:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 17:57:43,244 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 17:57:43,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001465071] [2024-11-01 17:57:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001465071] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 17:57:43,245 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 17:57:43,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 17:57:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006110159] [2024-11-01 17:57:43,247 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 17:57:43,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 17:57:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 17:57:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 17:57:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 17:57:43,271 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 17:57:48,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 17:57:49,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-01 17:57:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 17:57:50,710 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-01 17:57:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 17:57:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-01 17:57:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 17:57:50,717 INFO L225 Difference]: With dead ends: 18 [2024-11-01 17:57:50,717 INFO L226 Difference]: Without dead ends: 10 [2024-11-01 17:57:50,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-01 17:57:50,721 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-01 17:57:50,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2024-11-01 17:57:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-01 17:57:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-01 17:57:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 17:57:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 17:57:50,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 17:57:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 17:57:50,742 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 17:57:50,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-01 17:57:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 17:57:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 17:57:50,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 17:57:50,743 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 17:57:50,758 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 [2024-11-01 17:57:50,943 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 [2024-11-01 17:57:50,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 17:57:50,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 17:57:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 17:57:50,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 17:57:50,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958906230] [2024-11-01 17:57:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 17:57:50,945 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 [2024-11-01 17:57:50,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-01 17:57:50,948 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) [2024-11-01 17:57:50,950 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