/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/hardness-nfm22/hardness_operatoramount_amount250_file-54.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:54:59,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:55:00,020 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 21:55:00,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:55:00,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:55:00,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:55:00,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:55:00,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:55:00,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:55:00,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:55:00,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:55:00,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:55:00,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:55:00,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:55:00,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:55:00,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:55:00,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:55:00,054 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:55:00,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:55:00,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:55:00,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:55:00,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:55:00,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:55:00,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:55:00,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:55:00,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:55:00,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:55:00,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:55:00,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:55:00,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:55:00,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:55:00,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:55:00,057 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:55:00,057 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:55:00,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:55:00,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:55:00,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:55:00,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:55:00,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:55:00,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:55:00,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:55:00,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:55:00,266 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:55:00,266 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:55:00,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2024-11-02 21:55:01,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:55:01,760 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:55:01,761 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2024-11-02 21:55:01,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff49791f/1ca2b9a61a004de8a03e354022742975/FLAGdafb570c1 [2024-11-02 21:55:01,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff49791f/1ca2b9a61a004de8a03e354022742975 [2024-11-02 21:55:01,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:55:01,799 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:55:01,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:55:01,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:55:01,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:55:01,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:55:01" (1/1) ... [2024-11-02 21:55:01,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce4e740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:01, skipping insertion in model container [2024-11-02 21:55:01,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:55:01" (1/1) ... [2024-11-02 21:55:01,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:55:02,008 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-54.i[916,929] [2024-11-02 21:55:02,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:55:02,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:55:02,213 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-54.i[916,929] [2024-11-02 21:55:02,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:55:02,314 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:55:02,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02 WrapperNode [2024-11-02 21:55:02,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:55:02,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:55:02,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:55:02,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:55:02,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,375 INFO L138 Inliner]: procedures = 27, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 384 [2024-11-02 21:55:02,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:55:02,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:55:02,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:55:02,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:55:02,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,422 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 21:55:02,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:55:02,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:55:02,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:55:02,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:55:02,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (1/1) ... [2024-11-02 21:55:02,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:55:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:55:02,511 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 21:55:02,557 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 21:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:55:02,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:55:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:55:02,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:55:02,699 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:55:02,700 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:55:29,379 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-02 21:55:29,379 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:55:29,398 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:55:29,398 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:55:29,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:55:29 BoogieIcfgContainer [2024-11-02 21:55:29,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:55:29,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:55:29,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:55:29,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:55:29,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:55:01" (1/3) ... [2024-11-02 21:55:29,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664d8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:55:29, skipping insertion in model container [2024-11-02 21:55:29,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:55:02" (2/3) ... [2024-11-02 21:55:29,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664d8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:55:29, skipping insertion in model container [2024-11-02 21:55:29,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:55:29" (3/3) ... [2024-11-02 21:55:29,406 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-54.i [2024-11-02 21:55:29,420 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:55:29,421 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:55:29,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:55:29,491 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;@601f41a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:55:29,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:55:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 102 states have (on average 1.4803921568627452) internal successors, (151), 103 states have internal predecessors, (151), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-02 21:55:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-02 21:55:29,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:55:29,516 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:55:29,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:55:29,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:55:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash -847748928, now seen corresponding path program 1 times [2024-11-02 21:55:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:55:29,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469634096] [2024-11-02 21:55:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:55:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:55:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:55:29,536 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 21:55:29,537 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 21:55:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:55:31,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:55:31,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:55:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2024-11-02 21:55:31,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:55:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2024-11-02 21:55:39,636 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:55:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469634096] [2024-11-02 21:55:39,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [469634096] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:55:39,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:55:39,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:55:39,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920454056] [2024-11-02 21:55:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:55:39,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:55:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:55:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:55:39,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:55:39,693 INFO L87 Difference]: Start difference. First operand has 171 states, 102 states have (on average 1.4803921568627452) internal successors, (151), 103 states have internal predecessors, (151), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2024-11-02 21:55:39,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:55:39,743 INFO L93 Difference]: Finished difference Result 335 states and 626 transitions. [2024-11-02 21:55:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:55:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 400 [2024-11-02 21:55:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:55:39,758 INFO L225 Difference]: With dead ends: 335 [2024-11-02 21:55:39,759 INFO L226 Difference]: Without dead ends: 167 [2024-11-02 21:55:39,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:55:39,767 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:55:39,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:55:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-02 21:55:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-02 21:55:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 99 states have internal predecessors, (143), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-02 21:55:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 275 transitions. [2024-11-02 21:55:39,830 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 275 transitions. Word has length 400 [2024-11-02 21:55:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:55:39,831 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 275 transitions. [2024-11-02 21:55:39,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2024-11-02 21:55:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 275 transitions. [2024-11-02 21:55:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-02 21:55:39,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:55:39,841 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:55:40,001 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 21:55:40,045 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 21:55:40,046 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:55:40,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:55:40,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1395794288, now seen corresponding path program 1 times [2024-11-02 21:55:40,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:55:40,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321300318] [2024-11-02 21:55:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:55:40,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:55:40,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:55:40,049 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 21:55:40,051 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 21:55:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:55:41,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 21:55:41,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:55:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-02 21:55:42,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:55:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-02 21:55:49,417 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:55:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321300318] [2024-11-02 21:55:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1321300318] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:55:49,417 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:55:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 21:55:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549946528] [2024-11-02 21:55:49,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:55:49,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 21:55:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:55:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 21:55:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:55:49,421 INFO L87 Difference]: Start difference. First operand 167 states and 275 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2024-11-02 21:55:54,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:55:58,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:55:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:55:58,436 INFO L93 Difference]: Finished difference Result 403 states and 664 transitions. [2024-11-02 21:55:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 21:55:58,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 400 [2024-11-02 21:55:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:55:58,671 INFO L225 Difference]: With dead ends: 403 [2024-11-02 21:55:58,671 INFO L226 Difference]: Without dead ends: 239 [2024-11-02 21:55:58,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:55:58,673 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 117 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-02 21:55:58,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 526 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-11-02 21:55:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-02 21:55:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2024-11-02 21:55:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 153 states have (on average 1.477124183006536) internal successors, (226), 154 states have internal predecessors, (226), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-02 21:55:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 386 transitions. [2024-11-02 21:55:58,696 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 386 transitions. Word has length 400 [2024-11-02 21:55:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:55:58,697 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 386 transitions. [2024-11-02 21:55:58,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2024-11-02 21:55:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 386 transitions. [2024-11-02 21:55:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-11-02 21:55:58,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:55:58,703 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:55:58,821 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 21:55:58,907 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 21:55:58,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:55:58,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:55:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1963166620, now seen corresponding path program 1 times [2024-11-02 21:55:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:55:58,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946596583] [2024-11-02 21:55:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:55:58,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:55:58,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:55:58,911 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 21:55:58,912 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 21:56:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:56:00,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 21:56:00,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:56:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2285 proven. 165 refuted. 0 times theorem prover too weak. 6130 trivial. 0 not checked. [2024-11-02 21:56:21,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:56:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 30 proven. 165 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-02 21:56:41,596 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:56:41,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946596583] [2024-11-02 21:56:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1946596583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:56:41,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:56:41,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-02 21:56:41,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730624136] [2024-11-02 21:56:41,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:56:41,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 21:56:41,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:56:41,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 21:56:41,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-02 21:56:41,599 INFO L87 Difference]: Start difference. First operand 236 states and 386 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122)