./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_fillercode_fillercodestructure_filler-pe-co_file-59.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 3ee40dd4c738937df3cfe28722079ab6375e7aef2ee40a12cb1af18759ea102b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 08:28:49,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 08:28:49,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 08:28:49,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 08:28:49,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 08:28:49,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 08:28:49,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 08:28:49,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 08:28:49,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 08:28:49,311 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 08:28:49,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 08:28:49,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 08:28:49,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 08:28:49,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 08:28:49,316 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 08:28:49,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 08:28:49,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 08:28:49,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 08:28:49,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 08:28:49,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 08:28:49,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 08:28:49,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 08:28:49,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 08:28:49,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 08:28:49,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 08:28:49,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 08:28:49,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 08:28:49,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 08:28:49,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 08:28:49,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 08:28:49,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 08:28:49,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 08:28:49,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:28:49,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 08:28:49,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 08:28:49,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 08:28:49,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 08:28:49,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 08:28:49,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 08:28:49,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 08:28:49,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 08:28:49,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 08:28:49,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ee40dd4c738937df3cfe28722079ab6375e7aef2ee40a12cb1af18759ea102b [2024-11-22 08:28:49,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 08:28:49,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 08:28:49,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 08:28:49,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 08:28:49,622 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 08:28:49,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2024-11-22 08:28:51,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 08:28:51,319 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 08:28:51,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2024-11-22 08:28:51,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd662ba08/196ae4644e784d1e96f599d4340df772/FLAG604271e1a [2024-11-22 08:28:51,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd662ba08/196ae4644e784d1e96f599d4340df772 [2024-11-22 08:28:51,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 08:28:51,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 08:28:51,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 08:28:51,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 08:28:51,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 08:28:51,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8b02bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51, skipping insertion in model container [2024-11-22 08:28:51,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 08:28:51,535 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_fillercode_fillercodestructure_filler-pe-co_file-59.i[919,932] [2024-11-22 08:28:51,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:28:51,612 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 08:28:51,629 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_fillercode_fillercodestructure_filler-pe-co_file-59.i[919,932] [2024-11-22 08:28:51,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:28:51,677 INFO L204 MainTranslator]: Completed translation [2024-11-22 08:28:51,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51 WrapperNode [2024-11-22 08:28:51,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 08:28:51,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 08:28:51,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 08:28:51,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 08:28:51,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,760 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2024-11-22 08:28:51,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 08:28:51,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 08:28:51,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 08:28:51,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 08:28:51,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,806 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 08:28:51,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 08:28:51,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 08:28:51,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 08:28:51,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 08:28:51,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (1/1) ... [2024-11-22 08:28:51,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:28:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:28:51,934 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) [2024-11-22 08:28:51,979 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 [2024-11-22 08:28:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 08:28:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 08:28:52,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 08:28:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 08:28:52,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 08:28:52,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 08:28:52,103 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 08:28:52,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 08:28:52,609 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-22 08:28:52,610 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 08:28:52,621 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 08:28:52,625 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 08:28:52,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:28:52 BoogieIcfgContainer [2024-11-22 08:28:52,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 08:28:52,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 08:28:52,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 08:28:52,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 08:28:52,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:28:51" (1/3) ... [2024-11-22 08:28:52,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4730fdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:28:52, skipping insertion in model container [2024-11-22 08:28:52,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:28:51" (2/3) ... [2024-11-22 08:28:52,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4730fdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:28:52, skipping insertion in model container [2024-11-22 08:28:52,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:28:52" (3/3) ... [2024-11-22 08:28:52,641 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-59.i [2024-11-22 08:28:52,672 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 08:28:52,676 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 08:28:52,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 08:28:52,785 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;@3bf933e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 08:28:52,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 08:28:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 62 states have internal predecessors, (92), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 08:28:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-22 08:28:52,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:28:52,821 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:28:52,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:28:52,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:28:52,827 INFO L85 PathProgramCache]: Analyzing trace with hash 430846258, now seen corresponding path program 1 times [2024-11-22 08:28:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:28:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509029134] [2024-11-22 08:28:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:52,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:28:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-22 08:28:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:28:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509029134] [2024-11-22 08:28:53,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509029134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:28:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231352790] [2024-11-22 08:28:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:53,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:28:53,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:28:53,149 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) [2024-11-22 08:28:53,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 08:28:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:53,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 08:28:53,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:28:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-22 08:28:53,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 08:28:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231352790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:28:53,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:28:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 08:28:53,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77915748] [2024-11-22 08:28:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:28:53,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 08:28:53,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:28:53,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 08:28:53,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:28:53,349 INFO L87 Difference]: Start difference. First operand has 91 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 62 states have internal predecessors, (92), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-22 08:28:53,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:28:53,381 INFO L93 Difference]: Finished difference Result 175 states and 313 transitions. [2024-11-22 08:28:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 08:28:53,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2024-11-22 08:28:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:28:53,413 INFO L225 Difference]: With dead ends: 175 [2024-11-22 08:28:53,413 INFO L226 Difference]: Without dead ends: 87 [2024-11-22 08:28:53,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:28:53,422 INFO L432 NwaCegarLoop]: 137 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, 137 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 [2024-11-22 08:28:53,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:28:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-22 08:28:53,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-22 08:28:53,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-22 08:28:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2024-11-22 08:28:53,487 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 174 [2024-11-22 08:28:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:28:53,488 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2024-11-22 08:28:53,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-22 08:28:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2024-11-22 08:28:53,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-22 08:28:53,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:28:53,544 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:28:53,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 08:28:53,744 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 [2024-11-22 08:28:53,745 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:28:53,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:28:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1449271428, now seen corresponding path program 1 times [2024-11-22 08:28:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:28:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614325152] [2024-11-22 08:28:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:28:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 08:28:54,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:28:54,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614325152] [2024-11-22 08:28:54,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614325152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:28:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:28:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:28:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181708421] [2024-11-22 08:28:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:28:54,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:28:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:28:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:28:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:28:54,191 INFO L87 Difference]: Start difference. First operand 87 states and 137 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 08:28:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:28:54,351 INFO L93 Difference]: Finished difference Result 256 states and 406 transitions. [2024-11-22 08:28:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:28:54,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-11-22 08:28:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:28:54,359 INFO L225 Difference]: With dead ends: 256 [2024-11-22 08:28:54,361 INFO L226 Difference]: Without dead ends: 172 [2024-11-22 08:28:54,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:28:54,363 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 89 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:28:54,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 393 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:28:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-22 08:28:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 135. [2024-11-22 08:28:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 78 states have internal predecessors, (103), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-22 08:28:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 211 transitions. [2024-11-22 08:28:54,410 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 211 transitions. Word has length 174 [2024-11-22 08:28:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:28:54,411 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 211 transitions. [2024-11-22 08:28:54,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 08:28:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 211 transitions. [2024-11-22 08:28:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-22 08:28:54,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:28:54,416 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:28:54,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 08:28:54,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:28:54,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:28:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash 587320315, now seen corresponding path program 1 times [2024-11-22 08:28:54,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:28:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483114353] [2024-11-22 08:28:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:28:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 08:28:54,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:28:54,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483114353] [2024-11-22 08:28:54,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483114353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:28:54,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:28:54,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:28:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907846339] [2024-11-22 08:28:54,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:28:54,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:28:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:28:54,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:28:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:28:54,811 INFO L87 Difference]: Start difference. First operand 135 states and 211 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 08:28:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:28:54,966 INFO L93 Difference]: Finished difference Result 331 states and 523 transitions. [2024-11-22 08:28:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:28:54,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-11-22 08:28:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:28:54,970 INFO L225 Difference]: With dead ends: 331 [2024-11-22 08:28:54,972 INFO L226 Difference]: Without dead ends: 247 [2024-11-22 08:28:54,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:28:54,973 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 136 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:28:54,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 425 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:28:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-22 08:28:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 217. [2024-11-22 08:28:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 132 states have internal predecessors, (180), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-22 08:28:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 342 transitions. [2024-11-22 08:28:55,013 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 342 transitions. Word has length 175 [2024-11-22 08:28:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:28:55,014 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 342 transitions. [2024-11-22 08:28:55,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 08:28:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 342 transitions. [2024-11-22 08:28:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 08:28:55,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:28:55,017 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:28:55,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 08:28:55,017 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:28:55,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:28:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -628243053, now seen corresponding path program 1 times [2024-11-22 08:28:55,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:28:55,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290207804] [2024-11-22 08:28:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:55,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:28:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-22 08:28:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:28:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290207804] [2024-11-22 08:28:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290207804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:28:55,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:28:55,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:28:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464924292] [2024-11-22 08:28:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:28:55,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:28:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:28:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:28:55,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:28:55,446 INFO L87 Difference]: Start difference. First operand 217 states and 342 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 08:28:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:28:55,809 INFO L93 Difference]: Finished difference Result 545 states and 864 transitions. [2024-11-22 08:28:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:28:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-11-22 08:28:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:28:55,813 INFO L225 Difference]: With dead ends: 545 [2024-11-22 08:28:55,815 INFO L226 Difference]: Without dead ends: 379 [2024-11-22 08:28:55,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:28:55,818 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 274 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 08:28:55,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 231 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 08:28:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-22 08:28:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 247. [2024-11-22 08:28:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 162 states have (on average 1.4197530864197532) internal successors, (230), 162 states have internal predecessors, (230), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-22 08:28:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 392 transitions. [2024-11-22 08:28:55,860 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 392 transitions. Word has length 176 [2024-11-22 08:28:55,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:28:55,862 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 392 transitions. [2024-11-22 08:28:55,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-22 08:28:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 392 transitions. [2024-11-22 08:28:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 08:28:55,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:28:55,865 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:28:55,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 08:28:55,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:28:55,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:28:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1891716881, now seen corresponding path program 1 times [2024-11-22 08:28:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:28:55,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435189662] [2024-11-22 08:28:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:55,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:28:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 08:28:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:28:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435189662] [2024-11-22 08:28:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435189662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:28:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112446943] [2024-11-22 08:28:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:56,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:28:56,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:28:56,216 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) [2024-11-22 08:28:56,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 08:28:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:56,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 08:28:56,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:28:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2024-11-22 08:28:56,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:28:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 08:28:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112446943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:28:57,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:28:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-22 08:28:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414787179] [2024-11-22 08:28:57,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:28:57,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 08:28:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:28:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 08:28:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 08:28:57,012 INFO L87 Difference]: Start difference. First operand 247 states and 392 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-22 08:28:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:28:57,329 INFO L93 Difference]: Finished difference Result 465 states and 726 transitions. [2024-11-22 08:28:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 08:28:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 176 [2024-11-22 08:28:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:28:57,332 INFO L225 Difference]: With dead ends: 465 [2024-11-22 08:28:57,334 INFO L226 Difference]: Without dead ends: 269 [2024-11-22 08:28:57,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2024-11-22 08:28:57,335 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 237 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:28:57,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 260 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:28:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-22 08:28:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 229. [2024-11-22 08:28:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 141 states have (on average 1.3120567375886525) internal successors, (185), 141 states have internal predecessors, (185), 81 states have call successors, (81), 6 states have call predecessors, (81), 6 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-22 08:28:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 347 transitions. [2024-11-22 08:28:57,377 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 347 transitions. Word has length 176 [2024-11-22 08:28:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:28:57,378 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 347 transitions. [2024-11-22 08:28:57,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 2 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-22 08:28:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 347 transitions. [2024-11-22 08:28:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-22 08:28:57,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:28:57,381 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:28:57,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 08:28:57,583 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 [2024-11-22 08:28:57,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:28:57,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:28:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1768251680, now seen corresponding path program 1 times [2024-11-22 08:28:57,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:28:57,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91745553] [2024-11-22 08:28:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:28:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 08:28:58,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:28:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91745553] [2024-11-22 08:28:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91745553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:28:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627210358] [2024-11-22 08:28:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:28:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:28:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:28:58,190 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) [2024-11-22 08:28:58,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 08:28:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:28:58,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 08:28:58,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:28:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 308 proven. 69 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2024-11-22 08:28:59,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:28:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-11-22 08:28:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627210358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:28:59,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:28:59,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 20 [2024-11-22 08:28:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083970795] [2024-11-22 08:28:59,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:28:59,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 08:28:59,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:28:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 08:28:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-22 08:28:59,835 INFO L87 Difference]: Start difference. First operand 229 states and 347 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 6 states have call successors, (81), 3 states have call predecessors, (81), 6 states have return successors, (81), 6 states have call predecessors, (81), 6 states have call successors, (81) [2024-11-22 08:29:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:29:01,140 INFO L93 Difference]: Finished difference Result 572 states and 856 transitions. [2024-11-22 08:29:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 08:29:01,141 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 6 states have call successors, (81), 3 states have call predecessors, (81), 6 states have return successors, (81), 6 states have call predecessors, (81), 6 states have call successors, (81) Word has length 179 [2024-11-22 08:29:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:29:01,144 INFO L225 Difference]: With dead ends: 572 [2024-11-22 08:29:01,144 INFO L226 Difference]: Without dead ends: 398 [2024-11-22 08:29:01,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 08:29:01,146 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 934 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 08:29:01,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 659 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 08:29:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-22 08:29:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 241. [2024-11-22 08:29:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 150 states have (on average 1.28) internal successors, (192), 150 states have internal predecessors, (192), 81 states have call successors, (81), 9 states have call predecessors, (81), 9 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-22 08:29:01,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 354 transitions. [2024-11-22 08:29:01,198 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 354 transitions. Word has length 179 [2024-11-22 08:29:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:29:01,198 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 354 transitions. [2024-11-22 08:29:01,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 6 states have call successors, (81), 3 states have call predecessors, (81), 6 states have return successors, (81), 6 states have call predecessors, (81), 6 states have call successors, (81) [2024-11-22 08:29:01,199 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 354 transitions. [2024-11-22 08:29:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-22 08:29:01,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:29:01,200 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:29:01,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 08:29:01,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:29:01,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:29:01,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:29:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1634238174, now seen corresponding path program 1 times [2024-11-22 08:29:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:29:01,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765365987] [2024-11-22 08:29:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:29:01,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:29:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 08:29:01,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855396968] [2024-11-22 08:29:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:29:01,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:29:01,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:29:01,538 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) [2024-11-22 08:29:01,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 08:29:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:29:01,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-22 08:29:01,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:29:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 275 proven. 363 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-22 08:29:03,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:30:25,888 WARN L286 SmtUtils]: Spent 15.95s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)