/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 19:31:17,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 19:31:17,104 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 19:31:17,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 19:31:17,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 19:31:17,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 19:31:17,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 19:31:17,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 19:31:17,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 19:31:17,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 19:31:17,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 19:31:17,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 19:31:17,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 19:31:17,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 19:31:17,162 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 19:31:17,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 19:31:17,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 19:31:17,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 19:31:17,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 19:31:17,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 19:31:17,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 19:31:17,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 19:31:17,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 19:31:17,168 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 19:31:17,168 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 19:31:17,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 19:31:17,169 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 19:31:17,169 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 19:31:17,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 19:31:17,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 19:31:17,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 19:31:17,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 19:31:17,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 19:31:17,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 19:31:17,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 19:31:17,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 19:31:17,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 19:31:17,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 19:31:17,172 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 19:31:17,173 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 19:31:17,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 19:31:17,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 19:31:17,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 19:31:17,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 19:31:17,174 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 19:31:17,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-10-31 19:31:17,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 19:31:17,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 19:31:17,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 19:31:17,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 19:31:17,477 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 19:31:17,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_2-1.c [2024-10-31 19:31:18,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 19:31:19,112 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 19:31:19,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c [2024-10-31 19:31:19,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b367281/adac9b4340614313b43c323e80841f52/FLAG0e174ba0d [2024-10-31 19:31:19,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b367281/adac9b4340614313b43c323e80841f52 [2024-10-31 19:31:19,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 19:31:19,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 19:31:19,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 19:31:19,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 19:31:19,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 19:31:19,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42857846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19, skipping insertion in model container [2024-10-31 19:31:19,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 19:31:19,665 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c[675,688] [2024-10-31 19:31:19,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 19:31:19,689 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 19:31:19,700 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_2-1.c[675,688] [2024-10-31 19:31:19,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 19:31:19,719 INFO L204 MainTranslator]: Completed translation [2024-10-31 19:31:19,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19 WrapperNode [2024-10-31 19:31:19,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 19:31:19,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 19:31:19,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 19:31:19,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 19:31:19,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,747 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2024-10-31 19:31:19,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 19:31:19,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 19:31:19,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 19:31:19,749 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 19:31:19,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,770 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]. [2024-10-31 19:31:19,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,771 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 19:31:19,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 19:31:19,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 19:31:19,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 19:31:19,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (1/1) ... [2024-10-31 19:31:19,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 19:31:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 19:31:19,818 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) [2024-10-31 19:31:19,821 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 [2024-10-31 19:31:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 19:31:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 19:31:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 19:31:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 19:31:19,916 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 19:31:19,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 19:31:20,047 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-31 19:31:20,048 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 19:31:20,059 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 19:31:20,060 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 19:31:20,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:31:20 BoogieIcfgContainer [2024-10-31 19:31:20,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 19:31:20,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 19:31:20,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 19:31:20,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 19:31:20,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 07:31:19" (1/3) ... [2024-10-31 19:31:20,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3364e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:31:20, skipping insertion in model container [2024-10-31 19:31:20,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:31:19" (2/3) ... [2024-10-31 19:31:20,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3364e510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:31:20, skipping insertion in model container [2024-10-31 19:31:20,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:31:20" (3/3) ... [2024-10-31 19:31:20,069 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2024-10-31 19:31:20,085 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 19:31:20,085 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 19:31:20,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 19:31:20,152 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;@13066b4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 19:31:20,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 19:31:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-10-31 19:31:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 19:31:20,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:31:20,163 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 19:31:20,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:31:20,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:31:20,170 INFO L85 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2024-10-31 19:31:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:31:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047782850] [2024-10-31 19:31:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:31:20,178 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:31:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:31:20,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:31:20,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-10-31 19:31:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:31:20,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 19:31:20,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:31:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 19:31:20,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:31:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 19:31:20,532 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:31:20,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047782850] [2024-10-31 19:31:20,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1047782850] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 19:31:20,533 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 19:31:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-10-31 19:31:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249754679] [2024-10-31 19:31:20,536 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 19:31:20,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 19:31:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:31:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 19:31:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 19:31:20,558 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-10-31 19:31:24,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-10-31 19:31:28,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-10-31 19:31:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 19:31:28,768 INFO L93 Difference]: Finished difference Result 21 states and 32 transitions. [2024-10-31 19:31:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 19:31:28,771 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 [2024-10-31 19:31:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 19:31:28,778 INFO L225 Difference]: With dead ends: 21 [2024-10-31 19:31:28,779 INFO L226 Difference]: Without dead ends: 12 [2024-10-31 19:31:28,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-31 19:31:28,787 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-10-31 19:31:28,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-10-31 19:31:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-31 19:31:28,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-31 19:31:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-10-31 19:31:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-10-31 19:31:28,819 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2024-10-31 19:31:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 19:31:28,820 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-10-31 19:31:28,820 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) [2024-10-31 19:31:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-10-31 19:31:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 19:31:28,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 19:31:28,823 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-10-31 19:31:28,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-10-31 19:31:29,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-31 19:31:29,024 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 19:31:29,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 19:31:29,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1534070422, now seen corresponding path program 1 times [2024-10-31 19:31:29,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 19:31:29,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906553584] [2024-10-31 19:31:29,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 19:31:29,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-31 19:31:29,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-31 19:31:29,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-31 19:31:29,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-10-31 19:31:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 19:31:29,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 19:31:29,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 19:31:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 19:31:33,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 19:31:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 19:31:58,396 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 19:31:58,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906553584] [2024-10-31 19:31:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [906553584] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 19:31:58,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 19:31:58,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-31 19:31:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949098708] [2024-10-31 19:31:58,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 19:31:58,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 19:31:58,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 19:31:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 19:31:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=53, Unknown=7, NotChecked=0, Total=90 [2024-10-31 19:31:58,400 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-10-31 19:32:02,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-31 19:32:18,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-31 19:32:22,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-31 19:32:26,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-31 19:32:30,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-31 19:32:48,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-10-31 19:32:52,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-10-31 19:32:56,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-10-31 19:33:00,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1]