/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w8_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 03:55:49,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 03:55:50,015 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 03:55:50,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 03:55:50,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 03:55:50,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 03:55:50,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 03:55:50,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 03:55:50,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 03:55:50,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 03:55:50,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 03:55:50,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 03:55:50,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 03:55:50,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 03:55:50,066 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 03:55:50,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 03:55:50,067 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 03:55:50,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 03:55:50,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 03:55:50,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 03:55:50,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 03:55:50,071 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 03:55:50,071 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 03:55:50,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 03:55:50,072 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 03:55:50,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 03:55:50,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 03:55:50,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 03:55:50,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 03:55:50,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 03:55:50,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 03:55:50,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:55:50,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 03:55:50,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 03:55:50,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 03:55:50,075 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 03:55:50,075 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 03:55:50,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 03:55:50,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 03:55:50,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 03:55:50,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 03:55:50,078 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 03:55:50,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:55:50,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 03:55:50,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 03:55:50,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 03:55:50,460 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 03:55:50,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 03:55:50,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w8_d16_e0.c [2024-11-01 03:55:51,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 03:55:52,291 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 03:55:52,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w8_d16_e0.c [2024-11-01 03:55:52,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e40f474/99c617a8275c4273a1f54036d961397a/FLAGbba519251 [2024-11-01 03:55:52,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e40f474/99c617a8275c4273a1f54036d961397a [2024-11-01 03:55:52,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 03:55:52,529 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 03:55:52,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 03:55:52,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 03:55:52,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 03:55:52,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:55:52" (1/1) ... [2024-11-01 03:55:52,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cb4962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:52, skipping insertion in model container [2024-11-01 03:55:52,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 03:55:52" (1/1) ... [2024-11-01 03:55:52,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 03:55:52,823 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.arbitrated_top_n3_w8_d16_e0.c[1270,1283] [2024-11-01 03:55:53,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:55:53,183 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 03:55:53,193 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.arbitrated_top_n3_w8_d16_e0.c[1270,1283] [2024-11-01 03:55:53,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 03:55:53,348 INFO L204 MainTranslator]: Completed translation [2024-11-01 03:55:53,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53 WrapperNode [2024-11-01 03:55:53,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 03:55:53,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 03:55:53,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 03:55:53,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 03:55:53,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,522 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2306 [2024-11-01 03:55:53,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 03:55:53,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 03:55:53,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 03:55:53,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 03:55:53,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,655 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 03:55:53,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 03:55:53,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 03:55:53,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 03:55:53,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 03:55:53,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (1/1) ... [2024-11-01 03:55:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 03:55:53,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:55:53,801 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 03:55:53,805 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 03:55:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 03:55:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 03:55:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 03:55:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 03:55:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 03:55:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 03:55:54,249 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 03:55:54,250 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 03:55:55,833 INFO L? ?]: Removed 713 outVars from TransFormulas that were not future-live. [2024-11-01 03:55:55,833 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 03:55:55,847 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 03:55:55,847 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 03:55:55,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:55:55 BoogieIcfgContainer [2024-11-01 03:55:55,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 03:55:55,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 03:55:55,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 03:55:55,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 03:55:55,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 03:55:52" (1/3) ... [2024-11-01 03:55:55,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:55:55, skipping insertion in model container [2024-11-01 03:55:55,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 03:55:53" (2/3) ... [2024-11-01 03:55:55,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 03:55:55, skipping insertion in model container [2024-11-01 03:55:55,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 03:55:55" (3/3) ... [2024-11-01 03:55:55,857 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n3_w8_d16_e0.c [2024-11-01 03:55:55,873 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 03:55:55,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 03:55:55,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 03:55:55,936 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;@655cf805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 03:55:55,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 03:55:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-01 03:55:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-01 03:55:55,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:55:55,950 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 03:55:55,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:55:55,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:55:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash -209771273, now seen corresponding path program 1 times [2024-11-01 03:55:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:55:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884638910] [2024-11-01 03:55:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:55:55,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:55:55,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:55:55,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:55:55,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-01 03:55:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:55:56,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-01 03:55:56,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:55:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-01 03:55:57,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:55:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-01 03:55:57,926 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:55:57,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884638910] [2024-11-01 03:55:57,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [884638910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:55:57,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:55:57,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-01 03:55:57,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403827955] [2024-11-01 03:55:57,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:55:57,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-01 03:55:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:55:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-01 03:55:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:55:57,963 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-01 03:55:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:55:58,583 INFO L93 Difference]: Finished difference Result 85 states and 140 transitions. [2024-11-01 03:55:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 03:55:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) Word has length 65 [2024-11-01 03:55:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:55:58,595 INFO L225 Difference]: With dead ends: 85 [2024-11-01 03:55:58,595 INFO L226 Difference]: Without dead ends: 53 [2024-11-01 03:55:58,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 03:55:58,602 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-01 03:55:58,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 83 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-01 03:55:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-01 03:55:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-01 03:55:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-01 03:55:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2024-11-01 03:55:58,654 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 65 [2024-11-01 03:55:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:55:58,656 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2024-11-01 03:55:58,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 11 states have internal predecessors, (36), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-01 03:55:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2024-11-01 03:55:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-01 03:55:58,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:55:58,662 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 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] [2024-11-01 03:55:58,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-01 03:55:58,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:55:58,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:55:58,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:55:58,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1242097501, now seen corresponding path program 1 times [2024-11-01 03:55:58,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:55:58,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800824675] [2024-11-01 03:55:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:55:58,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:55:58,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:55:58,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:55:58,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-01 03:55:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:55:59,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 03:55:59,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:56:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-01 03:56:00,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:56:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-01 03:56:04,439 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 03:56:04,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800824675] [2024-11-01 03:56:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1800824675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 03:56:04,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 03:56:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 03:56:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556821339] [2024-11-01 03:56:04,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 03:56:04,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 03:56:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 03:56:04,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 03:56:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-01 03:56:04,444 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 17 states, 15 states have (on average 4.133333333333334) internal successors, (62), 17 states have internal predecessors, (62), 8 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (40), 6 states have call predecessors, (40), 8 states have call successors, (40) [2024-11-01 03:56:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 03:56:05,856 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2024-11-01 03:56:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 03:56:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.133333333333334) internal successors, (62), 17 states have internal predecessors, (62), 8 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (40), 6 states have call predecessors, (40), 8 states have call successors, (40) Word has length 128 [2024-11-01 03:56:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 03:56:05,859 INFO L225 Difference]: With dead ends: 78 [2024-11-01 03:56:05,859 INFO L226 Difference]: Without dead ends: 76 [2024-11-01 03:56:05,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-01 03:56:05,861 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-01 03:56:05,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 234 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-01 03:56:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-01 03:56:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-01 03:56:05,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-01 03:56:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2024-11-01 03:56:05,877 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 128 [2024-11-01 03:56:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 03:56:05,878 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2024-11-01 03:56:05,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.133333333333334) internal successors, (62), 17 states have internal predecessors, (62), 8 states have call successors, (40), 1 states have call predecessors, (40), 2 states have return successors, (40), 6 states have call predecessors, (40), 8 states have call successors, (40) [2024-11-01 03:56:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2024-11-01 03:56:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-01 03:56:05,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 03:56:05,883 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 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] [2024-11-01 03:56:05,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-01 03:56:06,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:56:06,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 03:56:06,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 03:56:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2139398281, now seen corresponding path program 2 times [2024-11-01 03:56:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 03:56:06,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184699458] [2024-11-01 03:56:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 03:56:06,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 03:56:06,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 03:56:06,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-01 03:56:06,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-01 03:56:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 03:56:07,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 2575 conjuncts, 142 conjuncts are in the unsatisfiable core [2024-11-01 03:56:07,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 03:56:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 198 proven. 181 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2024-11-01 03:56:12,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 03:56:58,069 WARN L286 SmtUtils]: Spent 13.62s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)