/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/rlim_exit.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 22:53:41,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 22:53:41,156 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 22:53:41,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 22:53:41,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 22:53:41,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 22:53:41,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 22:53:41,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 22:53:41,192 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 22:53:41,194 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 22:53:41,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 22:53:41,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 22:53:41,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 22:53:41,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 22:53:41,196 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 22:53:41,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 22:53:41,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 22:53:41,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 22:53:41,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 22:53:41,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 22:53:41,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 22:53:41,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 22:53:41,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 22:53:41,202 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 22:53:41,202 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 22:53:41,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 22:53:41,202 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 22:53:41,203 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 22:53:41,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 22:53:41,203 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 22:53:41,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 22:53:41,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 22:53:41,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 22:53:41,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 22:53:41,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:53:41,205 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 22:53:41,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 22:53:41,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 22:53:41,205 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 22:53:41,206 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 22:53:41,206 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 22:53:41,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 22:53:41,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 22:53:41,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 22:53:41,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:41,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 22:53:41,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 22:53:41,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 22:53:41,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 22:53:41,481 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 22:53:41,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_exit.c [2024-11-02 22:53:42,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 22:53:43,080 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 22:53:43,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit.c [2024-11-02 22:53:43,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c5c3708/83d5ecfb012646d4815d509517aae19c/FLAG4fb647623 [2024-11-02 22:53:43,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c5c3708/83d5ecfb012646d4815d509517aae19c [2024-11-02 22:53:43,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 22:53:43,104 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 22:53:43,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 22:53:43,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 22:53:43,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 22:53:43,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427327c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43, skipping insertion in model container [2024-11-02 22:53:43,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 22:53:43,299 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit.c[446,459] [2024-11-02 22:53:43,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:53:43,330 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 22:53:43,340 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit.c[446,459] [2024-11-02 22:53:43,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 22:53:43,361 INFO L204 MainTranslator]: Completed translation [2024-11-02 22:53:43,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43 WrapperNode [2024-11-02 22:53:43,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 22:53:43,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 22:53:43,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 22:53:43,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 22:53:43,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,394 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-02 22:53:43,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 22:53:43,396 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 22:53:43,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 22:53:43,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 22:53:43,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,421 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]. [2024-11-02 22:53:43,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,427 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 22:53:43,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 22:53:43,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 22:53:43,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 22:53:43,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (1/1) ... [2024-11-02 22:53:43,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 22:53:43,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:53:43,475 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) [2024-11-02 22:53:43,482 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 [2024-11-02 22:53:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 22:53:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 22:53:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 22:53:43,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 22:53:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 22:53:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 22:53:43,584 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 22:53:43,587 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 22:53:43,901 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-02 22:53:43,901 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 22:53:43,915 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 22:53:43,915 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 22:53:43,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:53:43 BoogieIcfgContainer [2024-11-02 22:53:43,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 22:53:43,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 22:53:43,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 22:53:43,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 22:53:43,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:53:43" (1/3) ... [2024-11-02 22:53:43,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d72112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:53:43, skipping insertion in model container [2024-11-02 22:53:43,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:43" (2/3) ... [2024-11-02 22:53:43,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d72112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:53:43, skipping insertion in model container [2024-11-02 22:53:43,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:53:43" (3/3) ... [2024-11-02 22:53:43,925 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_exit.c [2024-11-02 22:53:43,944 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 22:53:43,945 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 22:53:44,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 22:53:44,019 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;@50fec380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 22:53:44,019 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 22:53:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 22:53:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-02 22:53:44,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:53:44,032 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-02 22:53:44,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:53:44,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:53:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash 889617946, now seen corresponding path program 1 times [2024-11-02 22:53:44,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:53:44,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059219782] [2024-11-02 22:53:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:53:44,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:44,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:53:44,056 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) [2024-11-02 22:53:44,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 22:53:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:53:44,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 22:53:44,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:53:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:53:44,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:53:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 22:53:44,163 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:53:44,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059219782] [2024-11-02 22:53:44,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1059219782] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 22:53:44,164 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 22:53:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 22:53:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863777206] [2024-11-02 22:53:44,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 22:53:44,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 22:53:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:53:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 22:53:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:53:44,194 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-02 22:53:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:53:44,248 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2024-11-02 22:53:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 22:53:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2024-11-02 22:53:44,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:53:44,257 INFO L225 Difference]: With dead ends: 48 [2024-11-02 22:53:44,257 INFO L226 Difference]: Without dead ends: 25 [2024-11-02 22:53:44,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 22:53:44,268 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:53:44,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 22:53:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-02 22:53:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-02 22:53:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 22:53:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-02 22:53:44,307 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 6 [2024-11-02 22:53:44,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:53:44,307 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-02 22:53:44,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-02 22:53:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-02 22:53:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-02 22:53:44,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:53:44,309 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-02 22:53:44,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 22:53:44,510 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 [2024-11-02 22:53:44,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:53:44,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:53:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash 343707370, now seen corresponding path program 1 times [2024-11-02 22:53:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:53:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947819420] [2024-11-02 22:53:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:53:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:53:44,514 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) [2024-11-02 22:53:44,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 22:53:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:53:44,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 22:53:44,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:53:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 22:53:44,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:53:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-02 22:53:44,896 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:53:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947819420] [2024-11-02 22:53:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [947819420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:53:44,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:53:44,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-02 22:53:44,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843054729] [2024-11-02 22:53:44,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:53:44,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 22:53:44,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:53:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 22:53:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 22:53:44,905 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 22:53:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:53:45,079 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2024-11-02 22:53:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 22:53:45,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 34 [2024-11-02 22:53:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:53:45,085 INFO L225 Difference]: With dead ends: 57 [2024-11-02 22:53:45,085 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 22:53:45,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-02 22:53:45,088 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 22:53:45,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 115 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 22:53:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 22:53:45,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 22:53:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 22:53:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2024-11-02 22:53:45,104 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 34 [2024-11-02 22:53:45,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:53:45,105 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2024-11-02 22:53:45,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 22:53:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2024-11-02 22:53:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-02 22:53:45,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:53:45,108 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-02 22:53:45,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 22:53:45,309 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 [2024-11-02 22:53:45,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:53:45,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:53:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 611428490, now seen corresponding path program 2 times [2024-11-02 22:53:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:53:45,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580704048] [2024-11-02 22:53:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:53:45,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:45,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:53:45,316 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) [2024-11-02 22:53:45,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 22:53:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:53:45,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 22:53:45,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:53:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-02 22:53:45,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:53:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-02 22:53:46,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:53:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580704048] [2024-11-02 22:53:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [580704048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:53:46,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:53:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-02 22:53:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869048445] [2024-11-02 22:53:46,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:53:46,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 22:53:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:53:46,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 22:53:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-02 22:53:46,078 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 12 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-02 22:53:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:53:46,638 INFO L93 Difference]: Finished difference Result 113 states and 175 transitions. [2024-11-02 22:53:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 22:53:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 12 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) Word has length 90 [2024-11-02 22:53:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:53:46,641 INFO L225 Difference]: With dead ends: 113 [2024-11-02 22:53:46,641 INFO L226 Difference]: Without dead ends: 109 [2024-11-02 22:53:46,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2024-11-02 22:53:46,643 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 186 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 22:53:46,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 522 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 22:53:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-02 22:53:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-02 22:53:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 79 states have internal predecessors, (108), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-02 22:53:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 164 transitions. [2024-11-02 22:53:46,676 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 164 transitions. Word has length 90 [2024-11-02 22:53:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:53:46,677 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 164 transitions. [2024-11-02 22:53:46,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 12 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-02 22:53:46,677 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 164 transitions. [2024-11-02 22:53:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-02 22:53:46,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:53:46,685 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-02 22:53:46,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 22:53:46,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:46,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:53:46,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:53:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 187677642, now seen corresponding path program 3 times [2024-11-02 22:53:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:53:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089441680] [2024-11-02 22:53:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:53:46,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:46,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:53:46,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:53:46,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 22:53:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:53:47,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 22:53:47,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:53:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-02 22:53:47,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:53:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-02 22:53:48,606 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:53:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089441680] [2024-11-02 22:53:48,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1089441680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:53:48,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:53:48,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-02 22:53:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285111525] [2024-11-02 22:53:48,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:53:48,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-02 22:53:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:53:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-02 22:53:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-02 22:53:48,613 INFO L87 Difference]: Start difference. First operand 109 states and 164 transitions. Second operand has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 28 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 28 states have call predecessors, (56), 28 states have call successors, (56) [2024-11-02 22:53:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:53:50,861 INFO L93 Difference]: Finished difference Result 225 states and 359 transitions. [2024-11-02 22:53:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-02 22:53:50,863 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 28 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 28 states have call predecessors, (56), 28 states have call successors, (56) Word has length 202 [2024-11-02 22:53:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:53:50,865 INFO L225 Difference]: With dead ends: 225 [2024-11-02 22:53:50,866 INFO L226 Difference]: Without dead ends: 221 [2024-11-02 22:53:50,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2024-11-02 22:53:50,872 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 777 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 22:53:50,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1893 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 22:53:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-02 22:53:50,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-02 22:53:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 159 states have (on average 1.3836477987421383) internal successors, (220), 159 states have internal predecessors, (220), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-02 22:53:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 340 transitions. [2024-11-02 22:53:50,919 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 340 transitions. Word has length 202 [2024-11-02 22:53:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:53:50,946 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 340 transitions. [2024-11-02 22:53:50,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 28 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 28 states have call predecessors, (56), 28 states have call successors, (56) [2024-11-02 22:53:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 340 transitions. [2024-11-02 22:53:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-02 22:53:50,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:53:50,961 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-02 22:53:51,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 22:53:51,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:51,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:53:51,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:53:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -646225334, now seen corresponding path program 4 times [2024-11-02 22:53:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:53:51,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056791323] [2024-11-02 22:53:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:53:51,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:53:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:53:51,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:53:51,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 22:53:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:53:52,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-02 22:53:52,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:53:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-02 22:53:53,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:53:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-02 22:53:55,361 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:53:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056791323] [2024-11-02 22:53:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2056791323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:53:55,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:53:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2024-11-02 22:53:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419614511] [2024-11-02 22:53:55,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:53:55,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-02 22:53:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:53:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-02 22:53:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2024-11-02 22:53:55,369 INFO L87 Difference]: Start difference. First operand 221 states and 340 transitions. Second operand has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 60 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 60 states have call predecessors, (120), 60 states have call successors, (120) [2024-11-02 22:54:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 22:54:06,845 INFO L93 Difference]: Finished difference Result 449 states and 727 transitions. [2024-11-02 22:54:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-02 22:54:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 60 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 60 states have call predecessors, (120), 60 states have call successors, (120) Word has length 426 [2024-11-02 22:54:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 22:54:06,851 INFO L225 Difference]: With dead ends: 449 [2024-11-02 22:54:06,851 INFO L226 Difference]: Without dead ends: 445 [2024-11-02 22:54:06,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2024-11-02 22:54:06,854 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 2994 mSDsluCounter, 7008 mSDsCounter, 0 mSdLazyCounter, 3966 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 7296 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-02 22:54:06,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 7296 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3966 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-02 22:54:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-02 22:54:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-11-02 22:54:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 319 states have (on average 1.3918495297805642) internal successors, (444), 319 states have internal predecessors, (444), 124 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-02 22:54:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 692 transitions. [2024-11-02 22:54:06,908 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 692 transitions. Word has length 426 [2024-11-02 22:54:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 22:54:06,913 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 692 transitions. [2024-11-02 22:54:06,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 60 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 60 states have call predecessors, (120), 60 states have call successors, (120) [2024-11-02 22:54:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 692 transitions. [2024-11-02 22:54:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2024-11-02 22:54:06,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 22:54:06,941 INFO L215 NwaCegarLoop]: trace histogram [124, 124, 124, 62, 62, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-02 22:54:07,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-02 22:54:07,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:54:07,142 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 22:54:07,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 22:54:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1521438902, now seen corresponding path program 5 times [2024-11-02 22:54:07,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 22:54:07,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258229750] [2024-11-02 22:54:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 22:54:07,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 22:54:07,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 22:54:07,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 22:54:07,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 22:54:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 22:54:09,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-02 22:54:09,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 22:54:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2024-11-02 22:54:11,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 22:54:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2024-11-02 22:54:18,808 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 22:54:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258229750] [2024-11-02 22:54:18,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1258229750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 22:54:18,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 22:54:18,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 128 [2024-11-02 22:54:18,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022117076] [2024-11-02 22:54:18,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 22:54:18,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-02 22:54:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 22:54:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-02 22:54:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2024-11-02 22:54:18,818 INFO L87 Difference]: Start difference. First operand 445 states and 692 transitions. Second operand has 128 states, 128 states have (on average 3.9609375) internal successors, (507), 128 states have internal predecessors, (507), 124 states have call successors, (248), 1 states have call predecessors, (248), 1 states have return successors, (248), 124 states have call predecessors, (248), 124 states have call successors, (248)