./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a2d0541b7182b8d8954c2042edf4f52b3e2170f02f3494e1e889a6c80f344b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:06:43,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:06:43,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:06:43,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:06:43,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:06:43,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:06:43,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:06:43,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:06:43,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:06:43,779 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:06:43,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:06:43,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:06:43,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:06:43,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:06:43,782 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:06:43,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:06:43,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:06:43,783 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:06:43,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:06:43,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:06:43,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:06:43,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:06:43,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:06:43,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:06:43,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:06:43,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:06:43,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:06:43,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:06:43,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:06:43,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:06:43,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:06:43,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:06:43,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:06:43,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:06:43,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:06:43,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:06:43,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:06:43,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:06:43,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:06:43,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:06:43,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:06:43,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:06:43,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a2d0541b7182b8d8954c2042edf4f52b3e2170f02f3494e1e889a6c80f344b8 [2024-11-19 01:06:44,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:06:44,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:06:44,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:06:44,032 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:06:44,032 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:06:44,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-4.i [2024-11-19 01:06:45,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:06:45,685 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:06:45,686 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-4.i [2024-11-19 01:06:45,696 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a3c2ab0/b0a8d72af9b645a1be8ee2caa2434330/FLAG129f14a82 [2024-11-19 01:06:45,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39a3c2ab0/b0a8d72af9b645a1be8ee2caa2434330 [2024-11-19 01:06:45,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:06:45,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:06:45,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:06:45,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:06:45,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:06:45,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:06:45" (1/1) ... [2024-11-19 01:06:45,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a864a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:45, skipping insertion in model container [2024-11-19 01:06:45,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:06:45" (1/1) ... [2024-11-19 01:06:45,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:06:45,928 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-4.i[915,928] [2024-11-19 01:06:45,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:06:45,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:06:46,004 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-4.i[915,928] [2024-11-19 01:06:46,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:06:46,082 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:06:46,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46 WrapperNode [2024-11-19 01:06:46,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:06:46,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:06:46,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:06:46,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:06:46,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,143 INFO L138 Inliner]: procedures = 30, calls = 157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 490 [2024-11-19 01:06:46,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:06:46,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:06:46,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:06:46,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:06:46,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,174 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:06:46,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:06:46,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:06:46,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:06:46,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:06:46,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (1/1) ... [2024-11-19 01:06:46,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:06:46,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:06:46,263 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) [2024-11-19 01:06:46,267 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 [2024-11-19 01:06:46,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:06:46,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:06:46,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:06:46,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:06:46,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:06:46,439 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:06:46,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:06:47,135 INFO L? ?]: Removed 144 outVars from TransFormulas that were not future-live. [2024-11-19 01:06:47,136 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:06:47,154 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:06:47,156 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:06:47,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:06:47 BoogieIcfgContainer [2024-11-19 01:06:47,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:06:47,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:06:47,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:06:47,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:06:47,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:06:45" (1/3) ... [2024-11-19 01:06:47,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f71d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:06:47, skipping insertion in model container [2024-11-19 01:06:47,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:06:46" (2/3) ... [2024-11-19 01:06:47,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f71d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:06:47, skipping insertion in model container [2024-11-19 01:06:47,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:06:47" (3/3) ... [2024-11-19 01:06:47,169 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-4.i [2024-11-19 01:06:47,184 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:06:47,184 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:06:47,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:06:47,258 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;@1f025753, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:06:47,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:06:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 92 states have (on average 1.423913043478261) internal successors, (131), 93 states have internal predecessors, (131), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-19 01:06:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 01:06:47,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:47,278 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:47,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:47,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash -81952660, now seen corresponding path program 1 times [2024-11-19 01:06:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913621405] [2024-11-19 01:06:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:47,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913621405] [2024-11-19 01:06:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913621405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:47,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:47,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:06:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549963481] [2024-11-19 01:06:47,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:47,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:06:47,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:06:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:06:47,998 INFO L87 Difference]: Start difference. First operand has 110 states, 92 states have (on average 1.423913043478261) internal successors, (131), 93 states have internal predecessors, (131), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:06:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:48,071 INFO L93 Difference]: Finished difference Result 216 states and 335 transitions. [2024-11-19 01:06:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:06:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2024-11-19 01:06:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:48,083 INFO L225 Difference]: With dead ends: 216 [2024-11-19 01:06:48,084 INFO L226 Difference]: Without dead ends: 109 [2024-11-19 01:06:48,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:06:48,090 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 1 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:48,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 444 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:06:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-19 01:06:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2024-11-19 01:06:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 91 states have internal predecessors, (126), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-19 01:06:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 156 transitions. [2024-11-19 01:06:48,129 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 156 transitions. Word has length 130 [2024-11-19 01:06:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:48,131 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 156 transitions. [2024-11-19 01:06:48,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:06:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 156 transitions. [2024-11-19 01:06:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 01:06:48,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:48,134 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:48,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:06:48,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:48,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash -80105618, now seen corresponding path program 1 times [2024-11-19 01:06:48,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:48,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203404847] [2024-11-19 01:06:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:48,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:51,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:51,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203404847] [2024-11-19 01:06:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203404847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:51,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:06:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566410551] [2024-11-19 01:06:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:51,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:06:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:06:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:06:51,099 INFO L87 Difference]: Start difference. First operand 108 states and 156 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 01:06:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:52,389 INFO L93 Difference]: Finished difference Result 354 states and 508 transitions. [2024-11-19 01:06:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:06:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2024-11-19 01:06:52,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:52,394 INFO L225 Difference]: With dead ends: 354 [2024-11-19 01:06:52,396 INFO L226 Difference]: Without dead ends: 249 [2024-11-19 01:06:52,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:06:52,398 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 208 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:52,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 877 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 01:06:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-19 01:06:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 226. [2024-11-19 01:06:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 188 states have internal predecessors, (253), 35 states have call successors, (35), 4 states have call predecessors, (35), 4 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-19 01:06:52,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 323 transitions. [2024-11-19 01:06:52,442 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 323 transitions. Word has length 130 [2024-11-19 01:06:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:52,443 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 323 transitions. [2024-11-19 01:06:52,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 9 states have internal predecessors, (58), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 01:06:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 323 transitions. [2024-11-19 01:06:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 01:06:52,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:52,446 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:52,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:06:52,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:52,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash 620958960, now seen corresponding path program 1 times [2024-11-19 01:06:52,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80694474] [2024-11-19 01:06:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-19 01:06:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:52,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80694474] [2024-11-19 01:06:52,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80694474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:06:52,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316363913] [2024-11-19 01:06:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:52,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:06:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:06:52,655 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) [2024-11-19 01:06:52,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:06:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:52,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:06:52,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:06:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:52,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:06:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316363913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:06:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-19 01:06:52,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049588621] [2024-11-19 01:06:52,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:52,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:06:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:06:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:06:52,980 INFO L87 Difference]: Start difference. First operand 226 states and 323 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:06:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:53,031 INFO L93 Difference]: Finished difference Result 438 states and 630 transitions. [2024-11-19 01:06:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:06:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2024-11-19 01:06:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:53,039 INFO L225 Difference]: With dead ends: 438 [2024-11-19 01:06:53,040 INFO L226 Difference]: Without dead ends: 230 [2024-11-19 01:06:53,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:06:53,044 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:53,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:06:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-19 01:06:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-11-19 01:06:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 190 states have (on average 1.3526315789473684) internal successors, (257), 192 states have internal predecessors, (257), 35 states have call successors, (35), 4 states have call predecessors, (35), 4 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-19 01:06:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 327 transitions. [2024-11-19 01:06:53,081 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 327 transitions. Word has length 130 [2024-11-19 01:06:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:53,082 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 327 transitions. [2024-11-19 01:06:53,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:06:53,083 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 327 transitions. [2024-11-19 01:06:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 01:06:53,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:53,085 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:53,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:06:53,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:06:53,287 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:53,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 342596208, now seen corresponding path program 1 times [2024-11-19 01:06:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:53,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039630966] [2024-11-19 01:06:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:54,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:54,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039630966] [2024-11-19 01:06:54,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039630966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:54,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:54,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:06:54,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953406708] [2024-11-19 01:06:54,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:54,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:06:54,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:06:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:06:54,773 INFO L87 Difference]: Start difference. First operand 230 states and 327 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 01:06:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:55,566 INFO L93 Difference]: Finished difference Result 508 states and 729 transitions. [2024-11-19 01:06:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:06:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2024-11-19 01:06:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:55,571 INFO L225 Difference]: With dead ends: 508 [2024-11-19 01:06:55,571 INFO L226 Difference]: Without dead ends: 296 [2024-11-19 01:06:55,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:06:55,575 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 134 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:55,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 781 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:06:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-19 01:06:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 217. [2024-11-19 01:06:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 183 states have (on average 1.366120218579235) internal successors, (250), 184 states have internal predecessors, (250), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-19 01:06:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 310 transitions. [2024-11-19 01:06:55,609 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 310 transitions. Word has length 130 [2024-11-19 01:06:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:55,610 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 310 transitions. [2024-11-19 01:06:55,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 01:06:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 310 transitions. [2024-11-19 01:06:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 01:06:55,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:55,615 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:55,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:06:55,616 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:55,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1471545218, now seen corresponding path program 1 times [2024-11-19 01:06:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:55,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276979364] [2024-11-19 01:06:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:55,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-19 01:06:55,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276979364] [2024-11-19 01:06:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276979364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:06:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819807160] [2024-11-19 01:06:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:55,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:06:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:06:55,827 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) [2024-11-19 01:06:55,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:06:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:56,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:06:56,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:06:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:56,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:06:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819807160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:56,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:06:56,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-19 01:06:56,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514114572] [2024-11-19 01:06:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:56,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:06:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:06:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:06:56,106 INFO L87 Difference]: Start difference. First operand 217 states and 310 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:06:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:56,154 INFO L93 Difference]: Finished difference Result 437 states and 625 transitions. [2024-11-19 01:06:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:06:56,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2024-11-19 01:06:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:56,157 INFO L225 Difference]: With dead ends: 437 [2024-11-19 01:06:56,157 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 01:06:56,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:06:56,159 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:56,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 590 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:06:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 01:06:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2024-11-19 01:06:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 185 states have (on average 1.3621621621621622) internal successors, (252), 186 states have internal predecessors, (252), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-19 01:06:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 312 transitions. [2024-11-19 01:06:56,184 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 312 transitions. Word has length 132 [2024-11-19 01:06:56,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:56,186 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 312 transitions. [2024-11-19 01:06:56,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:06:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 312 transitions. [2024-11-19 01:06:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-19 01:06:56,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:56,191 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:56,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:06:56,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:06:56,392 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:56,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:56,392 INFO L85 PathProgramCache]: Analyzing trace with hash -967344249, now seen corresponding path program 1 times [2024-11-19 01:06:56,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:56,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448778136] [2024-11-19 01:06:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:56,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:57,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:57,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448778136] [2024-11-19 01:06:57,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448778136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:57,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:57,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:06:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075825716] [2024-11-19 01:06:57,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:57,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:06:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:06:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:06:57,669 INFO L87 Difference]: Start difference. First operand 219 states and 312 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 01:06:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:06:58,660 INFO L93 Difference]: Finished difference Result 461 states and 653 transitions. [2024-11-19 01:06:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:06:58,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2024-11-19 01:06:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:06:58,664 INFO L225 Difference]: With dead ends: 461 [2024-11-19 01:06:58,664 INFO L226 Difference]: Without dead ends: 245 [2024-11-19 01:06:58,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:06:58,665 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 188 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:06:58,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 477 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:06:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-19 01:06:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 219. [2024-11-19 01:06:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 185 states have (on average 1.3567567567567567) internal successors, (251), 186 states have internal predecessors, (251), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-19 01:06:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 311 transitions. [2024-11-19 01:06:58,684 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 311 transitions. Word has length 134 [2024-11-19 01:06:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:06:58,685 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 311 transitions. [2024-11-19 01:06:58,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 01:06:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 311 transitions. [2024-11-19 01:06:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-19 01:06:58,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:06:58,687 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:06:58,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:06:58,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:06:58,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:06:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2047759369, now seen corresponding path program 1 times [2024-11-19 01:06:58,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:06:58,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645559232] [2024-11-19 01:06:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:06:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:06:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:06:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-11-19 01:06:59,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:06:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645559232] [2024-11-19 01:06:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645559232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:06:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:06:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:06:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008958823] [2024-11-19 01:06:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:06:59,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:06:59,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:06:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:06:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:06:59,571 INFO L87 Difference]: Start difference. First operand 219 states and 311 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:07:00,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:07:00,086 INFO L93 Difference]: Finished difference Result 495 states and 698 transitions. [2024-11-19 01:07:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:07:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2024-11-19 01:07:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:07:00,089 INFO L225 Difference]: With dead ends: 495 [2024-11-19 01:07:00,089 INFO L226 Difference]: Without dead ends: 279 [2024-11-19 01:07:00,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:07:00,090 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 38 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:07:00,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 366 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:07:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-19 01:07:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 223. [2024-11-19 01:07:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 189 states have (on average 1.3492063492063493) internal successors, (255), 190 states have internal predecessors, (255), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-19 01:07:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 315 transitions. [2024-11-19 01:07:00,108 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 315 transitions. Word has length 134 [2024-11-19 01:07:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:07:00,108 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 315 transitions. [2024-11-19 01:07:00,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-19 01:07:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 315 transitions. [2024-11-19 01:07:00,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-19 01:07:00,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:07:00,110 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:07:00,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:07:00,110 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:07:00,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:07:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1267807044, now seen corresponding path program 1 times [2024-11-19 01:07:00,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:07:00,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428535333] [2024-11-19 01:07:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:07:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:07:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat