/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_amount100_file-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:35:06,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:35:06,168 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 21:35:06,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:35:06,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:35:06,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:35:06,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:35:06,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:35:06,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:35:06,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:35:06,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:35:06,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:35:06,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:35:06,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:35:06,209 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:35:06,209 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:35:06,210 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:35:06,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:35:06,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:35:06,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:35:06,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:35:06,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:35:06,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:35:06,216 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:35:06,218 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:35:06,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:35:06,219 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:35:06,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:35:06,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:35:06,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:35:06,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:35:06,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:35:06,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:35:06,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:35:06,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:35:06,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:35:06,221 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:35:06,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:35:06,222 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:35:06,222 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:35:06,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:35:06,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:35:06,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:35:06,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:35:06,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:06,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:35:06,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:35:06,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:35:06,505 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:35:06,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:35:06,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-33.i [2024-11-02 21:35:07,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:35:08,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:35:08,214 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-33.i [2024-11-02 21:35:08,229 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396e5fe42/2464e64e525045d8b2dc62bfd585af2c/FLAGac41ba87c [2024-11-02 21:35:08,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/396e5fe42/2464e64e525045d8b2dc62bfd585af2c [2024-11-02 21:35:08,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:35:08,247 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:35:08,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:35:08,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:35:08,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:35:08,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1834c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08, skipping insertion in model container [2024-11-02 21:35:08,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:35:08,477 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_amount100_file-33.i[916,929] [2024-11-02 21:35:08,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:35:08,590 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:35:08,600 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_amount100_file-33.i[916,929] [2024-11-02 21:35:08,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:35:08,673 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:35:08,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08 WrapperNode [2024-11-02 21:35:08,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:35:08,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:35:08,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:35:08,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:35:08,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,727 INFO L138 Inliner]: procedures = 27, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 234 [2024-11-02 21:35:08,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:35:08,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:35:08,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:35:08,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:35:08,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,760 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 21:35:08,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:35:08,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:35:08,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:35:08,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:35:08,791 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (1/1) ... [2024-11-02 21:35:08,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:35:08,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:08,835 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 21:35:08,839 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 21:35:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:35:08,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:35:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:35:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:35:08,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:35:08,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:35:08,983 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:35:08,986 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:35:14,872 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-02 21:35:14,872 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:35:14,888 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:35:14,889 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:35:14,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:35:14 BoogieIcfgContainer [2024-11-02 21:35:14,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:35:14,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:35:14,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:35:14,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:35:14,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:35:08" (1/3) ... [2024-11-02 21:35:14,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4629e297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:35:14, skipping insertion in model container [2024-11-02 21:35:14,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:35:08" (2/3) ... [2024-11-02 21:35:14,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4629e297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:35:14, skipping insertion in model container [2024-11-02 21:35:14,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:35:14" (3/3) ... [2024-11-02 21:35:14,897 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-33.i [2024-11-02 21:35:14,914 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:35:14,914 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:35:14,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:35:14,982 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;@79e7c6b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:35:14,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:35:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 63 states have internal predecessors, (83), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-02 21:35:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-02 21:35:15,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:15,012 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:15,012 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:15,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1838682336, now seen corresponding path program 1 times [2024-11-02 21:35:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152109710] [2024-11-02 21:35:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:15,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:15,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:15,038 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 21:35:15,040 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 21:35:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:15,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:35:15,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-02 21:35:15,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-02 21:35:16,026 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152109710] [2024-11-02 21:35:16,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [152109710] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:35:16,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:35:16,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:35:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224884000] [2024-11-02 21:35:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:35:16,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:35:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:35:16,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:35:16,064 INFO L87 Difference]: Start difference. First operand has 103 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 63 states have internal predecessors, (83), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-02 21:35:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:35:16,096 INFO L93 Difference]: Finished difference Result 199 states and 350 transitions. [2024-11-02 21:35:16,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:35:16,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 239 [2024-11-02 21:35:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:35:16,108 INFO L225 Difference]: With dead ends: 199 [2024-11-02 21:35:16,108 INFO L226 Difference]: Without dead ends: 99 [2024-11-02 21:35:16,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 476 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 21:35:16,117 INFO L432 NwaCegarLoop]: 152 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, 152 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 21:35:16,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:35:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-02 21:35:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-02 21:35:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-02 21:35:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 152 transitions. [2024-11-02 21:35:16,169 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 152 transitions. Word has length 239 [2024-11-02 21:35:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:35:16,170 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 152 transitions. [2024-11-02 21:35:16,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-02 21:35:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 152 transitions. [2024-11-02 21:35:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-02 21:35:16,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:16,176 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:16,207 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 21:35:16,376 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 21:35:16,377 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:16,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 131254948, now seen corresponding path program 1 times [2024-11-02 21:35:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:16,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517904053] [2024-11-02 21:35:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:16,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:16,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:16,381 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 21:35:16,383 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 21:35:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:16,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-02 21:35:16,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1954 proven. 195 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-11-02 21:35:20,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 75 proven. 36 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-02 21:35:22,436 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517904053] [2024-11-02 21:35:22,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517904053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:35:22,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:35:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2024-11-02 21:35:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411617426] [2024-11-02 21:35:22,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:35:22,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-02 21:35:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-02 21:35:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-02 21:35:22,443 INFO L87 Difference]: Start difference. First operand 99 states and 152 transitions. Second operand has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 5 states have call successors, (72), 4 states have call predecessors, (72), 8 states have return successors, (73), 5 states have call predecessors, (73), 5 states have call successors, (73) [2024-11-02 21:35:30,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-02 21:35:34,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-02 21:35:35,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-02 21:35:40,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-02 21:35:44,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-02 21:35:48,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2024-11-02 21:36:19,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:36:19,164 INFO L93 Difference]: Finished difference Result 484 states and 686 transitions. [2024-11-02 21:36:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-02 21:36:19,165 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 5 states have call successors, (72), 4 states have call predecessors, (72), 8 states have return successors, (73), 5 states have call predecessors, (73), 5 states have call successors, (73) Word has length 239 [2024-11-02 21:36:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:36:19,172 INFO L225 Difference]: With dead ends: 484 [2024-11-02 21:36:19,173 INFO L226 Difference]: Without dead ends: 388 [2024-11-02 21:36:19,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1381, Invalid=5929, Unknown=0, NotChecked=0, Total=7310 [2024-11-02 21:36:19,178 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 572 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 487 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2024-11-02 21:36:19,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1099 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 1998 Invalid, 6 Unknown, 0 Unchecked, 37.7s Time] [2024-11-02 21:36:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-02 21:36:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 271. [2024-11-02 21:36:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 161 states have (on average 1.15527950310559) internal successors, (186), 164 states have internal predecessors, (186), 94 states have call successors, (94), 15 states have call predecessors, (94), 15 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-02 21:36:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 374 transitions. [2024-11-02 21:36:19,259 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 374 transitions. Word has length 239 [2024-11-02 21:36:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:36:19,262 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 374 transitions. [2024-11-02 21:36:19,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 5 states have call successors, (72), 4 states have call predecessors, (72), 8 states have return successors, (73), 5 states have call predecessors, (73), 5 states have call successors, (73) [2024-11-02 21:36:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 374 transitions. [2024-11-02 21:36:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-02 21:36:19,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:36:19,268 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:19,301 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 21:36:19,476 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 21:36:19,477 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:36:19,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:36:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash 129407906, now seen corresponding path program 1 times [2024-11-02 21:36:19,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:36:19,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434024490] [2024-11-02 21:36:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:36:19,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:36:19,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:36:19,480 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 21:36:19,481 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 21:36:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:36:20,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 21:36:20,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:36:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 37 proven. 111 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-02 21:36:22,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:36:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2024-11-02 21:36:25,933 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:36:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434024490] [2024-11-02 21:36:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [434024490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:36:25,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:36:25,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-02 21:36:25,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393780065] [2024-11-02 21:36:25,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:36:25,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 21:36:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:36:25,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 21:36:25,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-02 21:36:25,939 INFO L87 Difference]: Start difference. First operand 271 states and 374 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-02 21:36:32,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:36:35,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:36:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:36:39,269 INFO L93 Difference]: Finished difference Result 835 states and 1131 transitions. [2024-11-02 21:36:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-02 21:36:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) Word has length 239 [2024-11-02 21:36:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:36:39,277 INFO L225 Difference]: With dead ends: 835 [2024-11-02 21:36:39,277 INFO L226 Difference]: Without dead ends: 606 [2024-11-02 21:36:39,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2024-11-02 21:36:39,280 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 293 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 102 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-02 21:36:39,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 771 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 936 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2024-11-02 21:36:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2024-11-02 21:36:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 474. [2024-11-02 21:36:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 299 states have (on average 1.1438127090301002) internal successors, (342), 305 states have internal predecessors, (342), 140 states have call successors, (140), 34 states have call predecessors, (140), 34 states have return successors, (140), 134 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-02 21:36:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 622 transitions. [2024-11-02 21:36:39,377 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 622 transitions. Word has length 239 [2024-11-02 21:36:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:36:39,378 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 622 transitions. [2024-11-02 21:36:39,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 3 states have call successors, (76) [2024-11-02 21:36:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 622 transitions. [2024-11-02 21:36:39,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-02 21:36:39,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:36:39,382 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:39,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 21:36:39,583 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 21:36:39,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:36:39,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:36:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 809466276, now seen corresponding path program 1 times [2024-11-02 21:36:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:36:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200798916] [2024-11-02 21:36:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:36:39,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:36:39,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:36:39,587 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 21:36:39,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process