./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.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-sp_file-12.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 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:13:56,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:13:56,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:13:56,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:13:56,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:13:56,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:13:56,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:13:56,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:13:56,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:13:56,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:13:56,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:13:56,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:13:56,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:13:56,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:13:56,452 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:13:56,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:13:56,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:13:56,452 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:13:56,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:13:56,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:13:56,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:13:56,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:13:56,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:13:56,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:13:56,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:13:56,458 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:13:56,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:13:56,461 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:13:56,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:13:56,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:13:56,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:13:56,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:13:56,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:13:56,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:13:56,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:13:56,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:13:56,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:13:56,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:13:56,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:13:56,463 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:13:56,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:13:56,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:13:56,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 [2024-11-19 01:13:56,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:13:56,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:13:56,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:13:56,682 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:13:56,682 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:13:56,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-19 01:13:58,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:13:58,280 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:13:58,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-19 01:13:58,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d114cbe9/e6434d46357d4fb7baa66d59fc5eabde/FLAG018cfa17c [2024-11-19 01:13:58,659 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d114cbe9/e6434d46357d4fb7baa66d59fc5eabde [2024-11-19 01:13:58,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:13:58,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:13:58,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:13:58,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:13:58,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:13:58,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:58,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c67e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58, skipping insertion in model container [2024-11-19 01:13:58,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:58,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:13:58,803 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-sp_file-12.i[917,930] [2024-11-19 01:13:58,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:13:58,864 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:13:58,873 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-sp_file-12.i[917,930] [2024-11-19 01:13:58,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:13:58,915 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:13:58,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58 WrapperNode [2024-11-19 01:13:58,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:13:58,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:13:58,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:13:58,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:13:58,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:58,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:58,970 INFO L138 Inliner]: procedures = 27, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 455 [2024-11-19 01:13:58,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:13:58,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:13:58,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:13:58,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:13:58,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:58,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:58,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,018 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 26 writes are split as follows [0, 26]. [2024-11-19 01:13:59,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:13:59,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:13:59,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:13:59,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:13:59,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (1/1) ... [2024-11-19 01:13:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:13:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:13:59,131 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 01:13:59,155 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 01:13:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:13:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-19 01:13:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-19 01:13:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:13:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:13:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:13:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:13:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:13:59,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:13:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:13:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:13:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:13:59,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:13:59,348 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:13:59,350 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:13:59,717 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-19 01:13:59,718 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:13:59,734 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:13:59,735 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:13:59,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:13:59 BoogieIcfgContainer [2024-11-19 01:13:59,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:13:59,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:13:59,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:13:59,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:13:59,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:13:58" (1/3) ... [2024-11-19 01:13:59,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d51790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:13:59, skipping insertion in model container [2024-11-19 01:13:59,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:13:58" (2/3) ... [2024-11-19 01:13:59,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d51790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:13:59, skipping insertion in model container [2024-11-19 01:13:59,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:13:59" (3/3) ... [2024-11-19 01:13:59,742 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-19 01:13:59,755 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:13:59,756 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:13:59,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:13:59,814 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;@7d888a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:13:59,814 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:13:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:13:59,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 01:13:59,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:13:59,827 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:59,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:13:59,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:13:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -7132500, now seen corresponding path program 1 times [2024-11-19 01:13:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:13:59,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440907843] [2024-11-19 01:13:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:13:59,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:13:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 01:14:00,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:00,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440907843] [2024-11-19 01:14:00,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440907843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497684806] [2024-11-19 01:14:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:00,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:00,097 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 01:14:00,105 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 01:14:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:00,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:14:00,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 01:14:00,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:14:00,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497684806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:00,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:14:00,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:14:00,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652511203] [2024-11-19 01:14:00,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:00,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:14:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:14:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:14:00,348 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:14:00,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:00,405 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-11-19 01:14:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:14:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-19 01:14:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:00,413 INFO L225 Difference]: With dead ends: 183 [2024-11-19 01:14:00,414 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 01:14:00,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:14:00,419 INFO L432 NwaCegarLoop]: 123 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, 123 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 [2024-11-19 01:14:00,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 01:14:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 01:14:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:14:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-19 01:14:00,451 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-11-19 01:14:00,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:00,452 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-19 01:14:00,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 01:14:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-19 01:14:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 01:14:00,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:00,454 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:00,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:14:00,655 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,SelfDestructingSolverStorable0 [2024-11-19 01:14:00,655 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:00,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197964, now seen corresponding path program 1 times [2024-11-19 01:14:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:00,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77150259] [2024-11-19 01:14:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:14:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77150259] [2024-11-19 01:14:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77150259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:01,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925682870] [2024-11-19 01:14:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:01,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:01,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:01,018 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 01:14:01,028 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 01:14:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:01,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:14:01,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:14:01,184 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:14:01,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925682870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:01,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:14:01,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-19 01:14:01,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585745396] [2024-11-19 01:14:01,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:01,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:14:01,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:14:01,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:14:01,188 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:14:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:01,218 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-11-19 01:14:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:14:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-11-19 01:14:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:01,220 INFO L225 Difference]: With dead ends: 173 [2024-11-19 01:14:01,220 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 01:14:01,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 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 01:14:01,221 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:01,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 01:14:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 01:14:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:14:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-11-19 01:14:01,229 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-11-19 01:14:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:01,230 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-11-19 01:14:01,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:14:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-11-19 01:14:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-19 01:14:01,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:01,232 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:01,249 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 01:14:01,432 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,SelfDestructingSolverStorable1 [2024-11-19 01:14:01,434 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:01,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:01,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1498089034, now seen corresponding path program 1 times [2024-11-19 01:14:01,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:01,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839769372] [2024-11-19 01:14:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:01,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:14:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839769372] [2024-11-19 01:14:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839769372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:01,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712887803] [2024-11-19 01:14:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:01,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:01,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:01,713 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) [2024-11-19 01:14:01,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:14:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:01,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:14:01,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:14:01,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:14:01,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712887803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:01,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:14:01,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 01:14:01,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327220013] [2024-11-19 01:14:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:01,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:14:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:14:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:14:01,867 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:14:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:01,899 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-11-19 01:14:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:14:01,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-19 01:14:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:01,901 INFO L225 Difference]: With dead ends: 176 [2024-11-19 01:14:01,902 INFO L226 Difference]: Without dead ends: 91 [2024-11-19 01:14:01,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:14:01,903 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:01,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-19 01:14:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-19 01:14:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:14:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-19 01:14:01,910 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-11-19 01:14:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:01,911 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-19 01:14:01,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 01:14:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-19 01:14:01,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-19 01:14:01,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:01,913 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:01,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:14:02,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:02,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:02,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash -183251538, now seen corresponding path program 1 times [2024-11-19 01:14:02,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:02,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953270237] [2024-11-19 01:14:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 01:14:03,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953270237] [2024-11-19 01:14:03,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953270237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:03,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:14:03,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:14:03,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380714098] [2024-11-19 01:14:03,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:03,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:14:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:14:03,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:14:03,083 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:14:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:03,528 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-11-19 01:14:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:14:03,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2024-11-19 01:14:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:03,531 INFO L225 Difference]: With dead ends: 133 [2024-11-19 01:14:03,533 INFO L226 Difference]: Without dead ends: 131 [2024-11-19 01:14:03,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:14:03,534 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 379 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:03,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 468 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:14:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-19 01:14:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2024-11-19 01:14:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 01:14:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-11-19 01:14:03,556 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2024-11-19 01:14:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:03,556 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-11-19 01:14:03,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 01:14:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-11-19 01:14:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 01:14:03,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:03,558 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:03,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:14:03,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:03,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1588599541, now seen corresponding path program 1 times [2024-11-19 01:14:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023519247] [2024-11-19 01:14:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:03,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 01:14:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023519247] [2024-11-19 01:14:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023519247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616858369] [2024-11-19 01:14:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:05,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:05,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:05,689 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) [2024-11-19 01:14:05,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:14:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:05,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-19 01:14:05,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:06,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:14:07,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:07,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:07,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:07,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:08,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:14:08,739 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 01:14:08,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-19 01:14:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-19 01:14:09,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:14:29,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616858369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:29,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:14:29,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 42 [2024-11-19 01:14:29,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550940153] [2024-11-19 01:14:29,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 01:14:29,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-19 01:14:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-19 01:14:29,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2573, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 01:14:29,408 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 42 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 37 states have internal predecessors, (107), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 01:14:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:40,230 INFO L93 Difference]: Finished difference Result 241 states and 308 transitions. [2024-11-19 01:14:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 01:14:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 37 states have internal predecessors, (107), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 122 [2024-11-19 01:14:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:40,232 INFO L225 Difference]: With dead ends: 241 [2024-11-19 01:14:40,232 INFO L226 Difference]: Without dead ends: 239 [2024-11-19 01:14:40,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=937, Invalid=5225, Unknown=0, NotChecked=0, Total=6162 [2024-11-19 01:14:40,237 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 429 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:14:40,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1203 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-19 01:14:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-19 01:14:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 184. [2024-11-19 01:14:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 157 states have internal predecessors, (196), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-19 01:14:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 240 transitions. [2024-11-19 01:14:40,267 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 240 transitions. Word has length 122 [2024-11-19 01:14:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:40,267 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 240 transitions. [2024-11-19 01:14:40,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 37 states have internal predecessors, (107), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 01:14:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 240 transitions. [2024-11-19 01:14:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 01:14:40,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:40,269 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:40,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 01:14:40,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:40,470 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:40,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1589190883, now seen corresponding path program 1 times [2024-11-19 01:14:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:40,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293168274] [2024-11-19 01:14:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 01:14:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293168274] [2024-11-19 01:14:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293168274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481568261] [2024-11-19 01:14:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:43,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:43,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:43,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:14:43,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:14:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:43,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-19 01:14:43,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:45,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 01:14:47,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:48,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:49,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:49,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 01:14:52,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:14:52,841 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 01:14:52,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-19 01:14:53,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 01:14:53,882 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 01:14:53,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2024-11-19 01:14:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-19 01:14:54,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:15:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481568261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:15:12,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:15:12,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 44 [2024-11-19 01:15:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57027431] [2024-11-19 01:15:12,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 01:15:12,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 01:15:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 01:15:12,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 01:15:12,845 INFO L87 Difference]: Start difference. First operand 184 states and 240 transitions. Second operand has 44 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 39 states have internal predecessors, (109), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 01:15:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:36,022 INFO L93 Difference]: Finished difference Result 341 states and 434 transitions. [2024-11-19 01:15:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-19 01:15:36,023 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 39 states have internal predecessors, (109), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 123 [2024-11-19 01:15:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:36,025 INFO L225 Difference]: With dead ends: 341 [2024-11-19 01:15:36,025 INFO L226 Difference]: Without dead ends: 339 [2024-11-19 01:15:36,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1812 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=1250, Invalid=6582, Unknown=0, NotChecked=0, Total=7832 [2024-11-19 01:15:36,031 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 701 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 3052 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:36,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1201 Invalid, 3199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 3052 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2024-11-19 01:15:36,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-19 01:15:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 211. [2024-11-19 01:15:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 183 states have (on average 1.273224043715847) internal successors, (233), 184 states have internal predecessors, (233), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-19 01:15:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 277 transitions. [2024-11-19 01:15:36,068 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 277 transitions. Word has length 123 [2024-11-19 01:15:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:36,068 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 277 transitions. [2024-11-19 01:15:36,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 39 states have internal predecessors, (109), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-19 01:15:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 277 transitions. [2024-11-19 01:15:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 01:15:36,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:36,069 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:15:36,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:15:36,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:36,270 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:36,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1238954064, now seen corresponding path program 1 times [2024-11-19 01:15:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476770099] [2024-11-19 01:15:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 01:15:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476770099] [2024-11-19 01:15:37,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476770099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:15:37,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362726077] [2024-11-19 01:15:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:37,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:37,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:15:37,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:15:37,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:15:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:37,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 01:15:37,642 INFO L278 TraceCheckSpWp]: Computing forward predicates...