./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:45:00,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:45:00,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:45:00,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:45:00,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:45:00,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:45:00,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:45:00,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:45:00,577 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:45:00,579 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:45:00,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:45:00,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:45:00,580 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:45:00,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:45:00,581 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:45:00,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:45:00,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:45:00,584 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:45:00,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:45:00,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:45:00,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:45:00,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:45:00,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:45:00,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:45:00,589 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:45:00,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:45:00,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:45:00,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:45:00,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:45:00,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:45:00,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:45:00,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:45:00,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:45:00,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:45:00,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:45:00,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:45:00,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:45:00,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:45:00,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:45:00,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:45:00,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:45:00,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:45:00,595 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 [2024-10-10 21:45:00,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:45:00,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:45:00,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:45:00,922 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:45:00,923 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:45:00,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-10-10 21:45:02,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:45:02,511 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:45:02,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-10-10 21:45:02,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/87576a204/19d6200e5fe34424a4661e33c52cb3fd/FLAGa87c1b460 [2024-10-10 21:45:02,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/87576a204/19d6200e5fe34424a4661e33c52cb3fd [2024-10-10 21:45:02,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:45:02,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:45:02,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:45:02,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:45:02,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:45:02,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:45:02" (1/1) ... [2024-10-10 21:45:02,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4778051b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:02, skipping insertion in model container [2024-10-10 21:45:02,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:45:02" (1/1) ... [2024-10-10 21:45:02,911 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:45:03,120 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i[817,830] [2024-10-10 21:45:03,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:45:03,192 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:45:03,204 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i[817,830] [2024-10-10 21:45:03,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:45:03,238 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:45:03,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03 WrapperNode [2024-10-10 21:45:03,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:45:03,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:45:03,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:45:03,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:45:03,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,273 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-10-10 21:45:03,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:45:03,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:45:03,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:45:03,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:45:03,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,297 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-10 21:45:03,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:45:03,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:45:03,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:45:03,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:45:03,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (1/1) ... [2024-10-10 21:45:03,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:45:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:03,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:45:03,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:45:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:45:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:45:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:45:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:45:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:45:03,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:45:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:45:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:45:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:45:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:45:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:45:03,510 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:45:03,513 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:45:03,691 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-10 21:45:03,692 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:45:03,731 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:45:03,732 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-10 21:45:03,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:45:03 BoogieIcfgContainer [2024-10-10 21:45:03,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:45:03,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:45:03,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:45:03,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:45:03,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:45:02" (1/3) ... [2024-10-10 21:45:03,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c058d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:45:03, skipping insertion in model container [2024-10-10 21:45:03,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:45:03" (2/3) ... [2024-10-10 21:45:03,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c058d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:45:03, skipping insertion in model container [2024-10-10 21:45:03,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:45:03" (3/3) ... [2024-10-10 21:45:03,743 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2024-10-10 21:45:03,760 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:45:03,762 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:45:03,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:45:03,839 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;@743d9aaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:45:03,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:45:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 21:45:03,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:03,852 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:03,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:03,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1138052878, now seen corresponding path program 1 times [2024-10-10 21:45:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:03,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515651071] [2024-10-10 21:45:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:45:04,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515651071] [2024-10-10 21:45:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515651071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:45:04,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:45:04,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:45:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937442676] [2024-10-10 21:45:04,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:45:04,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:45:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:45:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:45:04,111 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:04,168 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2024-10-10 21:45:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:45:04,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 21:45:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:04,177 INFO L225 Difference]: With dead ends: 37 [2024-10-10 21:45:04,177 INFO L226 Difference]: Without dead ends: 17 [2024-10-10 21:45:04,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:45:04,183 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:04,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-10 21:45:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-10 21:45:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-10-10 21:45:04,218 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2024-10-10 21:45:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:04,219 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-10 21:45:04,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-10-10 21:45:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 21:45:04,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:04,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:04,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:45:04,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:04,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash -787695532, now seen corresponding path program 1 times [2024-10-10 21:45:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546032101] [2024-10-10 21:45:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:45:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546032101] [2024-10-10 21:45:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546032101] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930444864] [2024-10-10 21:45:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:04,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:04,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:45:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:04,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:45:04,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:45:04,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:45:04,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930444864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:45:04,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:45:04,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 5 [2024-10-10 21:45:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725633743] [2024-10-10 21:45:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:45:04,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 21:45:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 21:45:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:45:04,455 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:04,494 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-10-10 21:45:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 21:45:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-10 21:45:04,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:04,495 INFO L225 Difference]: With dead ends: 30 [2024-10-10 21:45:04,495 INFO L226 Difference]: Without dead ends: 22 [2024-10-10 21:45:04,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:45:04,496 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:04,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-10 21:45:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-10-10 21:45:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2024-10-10 21:45:04,509 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2024-10-10 21:45:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:04,510 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2024-10-10 21:45:04,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2024-10-10 21:45:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 21:45:04,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:04,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:04,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:45:04,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:04,716 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:04,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash -261279241, now seen corresponding path program 1 times [2024-10-10 21:45:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:04,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836757099] [2024-10-10 21:45:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:04,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:45:04,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:04,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836757099] [2024-10-10 21:45:04,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836757099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:04,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325548379] [2024-10-10 21:45:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:04,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:04,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:04,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:04,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:45:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:04,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:45:04,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:45:04,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:45:04,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325548379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:04,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:45:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241176531] [2024-10-10 21:45:04,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:04,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:45:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:45:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:45:04,946 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:05,013 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2024-10-10 21:45:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:45:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-10 21:45:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:05,014 INFO L225 Difference]: With dead ends: 46 [2024-10-10 21:45:05,014 INFO L226 Difference]: Without dead ends: 31 [2024-10-10 21:45:05,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:45:05,017 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:05,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:45:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-10 21:45:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2024-10-10 21:45:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-10-10 21:45:05,023 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 13 [2024-10-10 21:45:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:05,023 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-10-10 21:45:05,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-10-10 21:45:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-10 21:45:05,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:05,024 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:05,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:45:05,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:05,225 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:05,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash 72406909, now seen corresponding path program 2 times [2024-10-10 21:45:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688554802] [2024-10-10 21:45:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:45:05,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:05,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688554802] [2024-10-10 21:45:05,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688554802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:45:05,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:45:05,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 21:45:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921829436] [2024-10-10 21:45:05,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:45:05,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 21:45:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 21:45:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 21:45:05,355 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:05,419 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2024-10-10 21:45:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 21:45:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-10 21:45:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:05,424 INFO L225 Difference]: With dead ends: 41 [2024-10-10 21:45:05,424 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 21:45:05,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:45:05,426 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:05,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 21:45:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-10 21:45:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-10 21:45:05,431 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2024-10-10 21:45:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:05,432 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-10 21:45:05,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-10 21:45:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 21:45:05,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:05,433 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:05,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 21:45:05,434 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:05,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1673333505, now seen corresponding path program 1 times [2024-10-10 21:45:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:05,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012243587] [2024-10-10 21:45:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:05,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:45:05,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012243587] [2024-10-10 21:45:05,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012243587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023457911] [2024-10-10 21:45:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:05,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:05,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:05,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:45:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:05,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:45:05,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:45:05,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 21:45:05,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023457911] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:05,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:05,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-10-10 21:45:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951249415] [2024-10-10 21:45:05,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:05,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-10 21:45:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-10 21:45:05,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=155, Unknown=0, NotChecked=0, Total=272 [2024-10-10 21:45:05,869 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:06,171 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2024-10-10 21:45:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:45:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-10 21:45:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:06,174 INFO L225 Difference]: With dead ends: 84 [2024-10-10 21:45:06,174 INFO L226 Difference]: Without dead ends: 68 [2024-10-10 21:45:06,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=443, Unknown=0, NotChecked=0, Total=702 [2024-10-10 21:45:06,176 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 172 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:06,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 64 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:45:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-10 21:45:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-10-10 21:45:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.328358208955224) internal successors, (89), 67 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2024-10-10 21:45:06,191 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 19 [2024-10-10 21:45:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:06,192 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2024-10-10 21:45:06,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2024-10-10 21:45:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-10 21:45:06,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:06,193 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:06,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:45:06,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:06,400 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:06,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1125094079, now seen corresponding path program 2 times [2024-10-10 21:45:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170962731] [2024-10-10 21:45:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-10 21:45:06,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170962731] [2024-10-10 21:45:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170962731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425233715] [2024-10-10 21:45:06,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:45:06,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:06,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:06,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:06,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:45:06,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:45:06,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:06,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 21:45:06,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-10 21:45:06,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-10 21:45:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425233715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:07,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-10-10 21:45:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337261198] [2024-10-10 21:45:07,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:07,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-10 21:45:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-10 21:45:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-10 21:45:07,076 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:07,278 INFO L93 Difference]: Finished difference Result 196 states and 285 transitions. [2024-10-10 21:45:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-10 21:45:07,279 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-10 21:45:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:07,281 INFO L225 Difference]: With dead ends: 196 [2024-10-10 21:45:07,281 INFO L226 Difference]: Without dead ends: 140 [2024-10-10 21:45:07,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-10 21:45:07,285 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 438 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:07,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 122 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:45:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-10-10 21:45:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 80. [2024-10-10 21:45:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 79 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2024-10-10 21:45:07,298 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 49 [2024-10-10 21:45:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:07,298 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2024-10-10 21:45:07,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2024-10-10 21:45:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-10 21:45:07,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:07,300 INFO L215 NwaCegarLoop]: trace histogram [22, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:07,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:45:07,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-10 21:45:07,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:07,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash 400832319, now seen corresponding path program 3 times [2024-10-10 21:45:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:07,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353504333] [2024-10-10 21:45:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-10 21:45:08,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:08,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353504333] [2024-10-10 21:45:08,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353504333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:08,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645468784] [2024-10-10 21:45:08,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:45:08,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:08,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:08,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:08,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:45:08,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:45:08,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:08,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-10 21:45:08,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2024-10-10 21:45:08,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:45:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645468784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:45:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:45:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [24] total 29 [2024-10-10 21:45:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405488761] [2024-10-10 21:45:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:45:08,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-10 21:45:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-10 21:45:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2024-10-10 21:45:08,431 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:08,508 INFO L93 Difference]: Finished difference Result 168 states and 230 transitions. [2024-10-10 21:45:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 21:45:08,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-10 21:45:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:08,510 INFO L225 Difference]: With dead ends: 168 [2024-10-10 21:45:08,510 INFO L226 Difference]: Without dead ends: 160 [2024-10-10 21:45:08,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=552, Unknown=0, NotChecked=0, Total=870 [2024-10-10 21:45:08,512 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:08,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:45:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-10 21:45:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 81. [2024-10-10 21:45:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2875) internal successors, (103), 80 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2024-10-10 21:45:08,539 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 61 [2024-10-10 21:45:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:08,540 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2024-10-10 21:45:08,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2024-10-10 21:45:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-10 21:45:08,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:08,541 INFO L215 NwaCegarLoop]: trace histogram [22, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:08,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 21:45:08,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:08,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:08,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:08,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1487444483, now seen corresponding path program 4 times [2024-10-10 21:45:08,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512419016] [2024-10-10 21:45:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-10 21:45:09,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512419016] [2024-10-10 21:45:09,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512419016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:09,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363278191] [2024-10-10 21:45:09,413 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:45:09,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:09,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:09,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:09,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:45:09,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:45:09,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:09,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-10 21:45:09,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-10-10 21:45:09,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-10-10 21:45:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363278191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:09,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13, 13] total 36 [2024-10-10 21:45:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409625456] [2024-10-10 21:45:09,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:09,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-10 21:45:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:09,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-10 21:45:09,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2024-10-10 21:45:09,946 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:10,269 INFO L93 Difference]: Finished difference Result 336 states and 482 transitions. [2024-10-10 21:45:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-10 21:45:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-10 21:45:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:10,271 INFO L225 Difference]: With dead ends: 336 [2024-10-10 21:45:10,272 INFO L226 Difference]: Without dead ends: 278 [2024-10-10 21:45:10,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2024-10-10 21:45:10,274 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 303 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:10,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 193 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 21:45:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-10-10 21:45:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2024-10-10 21:45:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3349514563106797) internal successors, (275), 206 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 275 transitions. [2024-10-10 21:45:10,307 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 275 transitions. Word has length 64 [2024-10-10 21:45:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:10,308 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 275 transitions. [2024-10-10 21:45:10,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.0833333333333335) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 275 transitions. [2024-10-10 21:45:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-10 21:45:10,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:10,310 INFO L215 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:10,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 21:45:10,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 21:45:10,515 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:10,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash 838347030, now seen corresponding path program 5 times [2024-10-10 21:45:10,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434531792] [2024-10-10 21:45:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2148 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2024-10-10 21:45:11,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434531792] [2024-10-10 21:45:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434531792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911371913] [2024-10-10 21:45:11,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:45:11,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:11,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:11,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:45:12,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-10-10 21:45:12,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:12,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-10 21:45:12,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2148 backedges. 1523 proven. 61 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-10-10 21:45:14,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2148 backedges. 1553 proven. 31 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-10-10 21:45:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911371913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:15,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:15,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 36] total 104 [2024-10-10 21:45:15,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901407350] [2024-10-10 21:45:15,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:15,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-10-10 21:45:15,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-10-10 21:45:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2622, Invalid=8090, Unknown=0, NotChecked=0, Total=10712 [2024-10-10 21:45:15,854 INFO L87 Difference]: Start difference. First operand 207 states and 275 transitions. Second operand has 104 states, 104 states have (on average 2.326923076923077) internal successors, (242), 104 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:18,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:18,904 INFO L93 Difference]: Finished difference Result 433 states and 614 transitions. [2024-10-10 21:45:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-10-10 21:45:18,905 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.326923076923077) internal successors, (242), 104 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-10-10 21:45:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:18,907 INFO L225 Difference]: With dead ends: 433 [2024-10-10 21:45:18,907 INFO L226 Difference]: Without dead ends: 261 [2024-10-10 21:45:18,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11178 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=10311, Invalid=33999, Unknown=0, NotChecked=0, Total=44310 [2024-10-10 21:45:18,918 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 1603 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:18,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 516 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 21:45:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-10-10 21:45:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 253. [2024-10-10 21:45:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.2896825396825398) internal successors, (325), 252 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:18,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 325 transitions. [2024-10-10 21:45:18,968 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 325 transitions. Word has length 144 [2024-10-10 21:45:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:18,968 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 325 transitions. [2024-10-10 21:45:18,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.326923076923077) internal successors, (242), 104 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 325 transitions. [2024-10-10 21:45:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-10 21:45:18,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:18,972 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 34, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:18,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:45:19,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:19,173 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:19,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:19,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1148565087, now seen corresponding path program 6 times [2024-10-10 21:45:19,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:19,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228425914] [2024-10-10 21:45:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2024-10-10 21:45:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228425914] [2024-10-10 21:45:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228425914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753670631] [2024-10-10 21:45:20,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:45:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:20,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:20,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:45:20,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-10 21:45:20,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:20,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 21:45:20,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 2278 proven. 14 refuted. 0 times theorem prover too weak. 2998 trivial. 0 not checked. [2024-10-10 21:45:20,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5290 backedges. 2279 proven. 13 refuted. 0 times theorem prover too weak. 2998 trivial. 0 not checked. [2024-10-10 21:45:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753670631] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:21,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:21,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 8, 8] total 44 [2024-10-10 21:45:21,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903234411] [2024-10-10 21:45:21,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:21,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-10 21:45:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-10 21:45:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=685, Invalid=1207, Unknown=0, NotChecked=0, Total=1892 [2024-10-10 21:45:21,030 INFO L87 Difference]: Start difference. First operand 253 states and 325 transitions. Second operand has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:25,426 INFO L93 Difference]: Finished difference Result 634 states and 843 transitions. [2024-10-10 21:45:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-10-10 21:45:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2024-10-10 21:45:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:25,429 INFO L225 Difference]: With dead ends: 634 [2024-10-10 21:45:25,429 INFO L226 Difference]: Without dead ends: 358 [2024-10-10 21:45:25,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14282 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=11332, Invalid=33400, Unknown=0, NotChecked=0, Total=44732 [2024-10-10 21:45:25,435 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2094 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:25,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 158 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 21:45:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-10-10 21:45:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 350. [2024-10-10 21:45:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.3008595988538683) internal successors, (454), 349 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 454 transitions. [2024-10-10 21:45:25,503 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 454 transitions. Word has length 250 [2024-10-10 21:45:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:25,503 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 454 transitions. [2024-10-10 21:45:25,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 454 transitions. [2024-10-10 21:45:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-10 21:45:25,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:25,507 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 35, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:25,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-10 21:45:25,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-10 21:45:25,708 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:25,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1945988826, now seen corresponding path program 7 times [2024-10-10 21:45:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9886086] [2024-10-10 21:45:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11258 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:45:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9886086] [2024-10-10 21:45:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9886086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157281934] [2024-10-10 21:45:27,454 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 21:45:27,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:27,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:27,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:45:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:27,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-10 21:45:27,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11258 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:45:27,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 11258 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:45:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157281934] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:29,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:29,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 74 [2024-10-10 21:45:29,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484862194] [2024-10-10 21:45:29,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:29,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-10-10 21:45:29,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:29,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-10-10 21:45:29,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-10-10 21:45:29,155 INFO L87 Difference]: Start difference. First operand 350 states and 454 transitions. Second operand has 75 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:30,193 INFO L93 Difference]: Finished difference Result 1033 states and 1425 transitions. [2024-10-10 21:45:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-10-10 21:45:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-10-10 21:45:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:30,197 INFO L225 Difference]: With dead ends: 1033 [2024-10-10 21:45:30,197 INFO L226 Difference]: Without dead ends: 720 [2024-10-10 21:45:30,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2024-10-10 21:45:30,199 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1470 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:30,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 342 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 21:45:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-10-10 21:45:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 387. [2024-10-10 21:45:30,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.2720207253886011) internal successors, (491), 386 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 491 transitions. [2024-10-10 21:45:30,244 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 491 transitions. Word has length 347 [2024-10-10 21:45:30,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:30,244 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 491 transitions. [2024-10-10 21:45:30,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 491 transitions. [2024-10-10 21:45:30,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-10-10 21:45:30,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:30,249 INFO L215 NwaCegarLoop]: trace histogram [72, 67, 67, 67, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:30,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-10 21:45:30,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:30,450 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:30,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1375168364, now seen corresponding path program 8 times [2024-10-10 21:45:30,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:30,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783488501] [2024-10-10 21:45:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:45:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13256 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:45:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:45:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783488501] [2024-10-10 21:45:34,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783488501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:45:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065622902] [2024-10-10 21:45:34,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:45:34,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:45:34,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:45:34,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:45:34,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-10 21:45:34,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:45:34,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:45:34,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-10 21:45:34,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:45:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13256 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:45:35,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:45:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13256 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:45:40,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065622902] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:45:40,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:45:40,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 148 [2024-10-10 21:45:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62077546] [2024-10-10 21:45:40,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:45:40,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-10-10 21:45:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:45:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-10-10 21:45:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2024-10-10 21:45:40,349 INFO L87 Difference]: Start difference. First operand 387 states and 491 transitions. Second operand has 149 states, 149 states have (on average 1.0939597315436242) internal successors, (163), 148 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:45:49,409 INFO L93 Difference]: Finished difference Result 1773 states and 2498 transitions. [2024-10-10 21:45:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-10-10 21:45:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.0939597315436242) internal successors, (163), 148 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2024-10-10 21:45:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:45:49,415 INFO L225 Difference]: With dead ends: 1773 [2024-10-10 21:45:49,415 INFO L226 Difference]: Without dead ends: 1460 [2024-10-10 21:45:49,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=11026, Invalid=11026, Unknown=0, NotChecked=0, Total=22052 [2024-10-10 21:45:49,417 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3612 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-10 21:45:49,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 634 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-10 21:45:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2024-10-10 21:45:49,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 461. [2024-10-10 21:45:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.2282608695652173) internal successors, (565), 460 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 565 transitions. [2024-10-10 21:45:49,478 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 565 transitions. Word has length 384 [2024-10-10 21:45:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:45:49,479 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 565 transitions. [2024-10-10 21:45:49,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.0939597315436242) internal successors, (163), 148 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:45:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 565 transitions. [2024-10-10 21:45:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2024-10-10 21:45:49,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:45:49,486 INFO L215 NwaCegarLoop]: trace histogram [146, 67, 67, 67, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:45:49,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-10 21:45:49,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-10 21:45:49,686 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:45:49,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:45:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1638388820, now seen corresponding path program 9 times [2024-10-10 21:45:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:45:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065143726] [2024-10-10 21:45:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:45:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:45:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:46:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 21359 backedges. 0 proven. 10731 refuted. 0 times theorem prover too weak. 10628 trivial. 0 not checked. [2024-10-10 21:46:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:46:02,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065143726] [2024-10-10 21:46:02,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065143726] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:46:02,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088709269] [2024-10-10 21:46:02,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:46:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:46:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:46:02,023 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:46:02,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-10 21:46:02,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-10 21:46:02,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:46:02,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 21:46:02,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:46:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21359 backedges. 621 proven. 5 refuted. 0 times theorem prover too weak. 20733 trivial. 0 not checked. [2024-10-10 21:46:02,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:46:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21359 backedges. 621 proven. 5 refuted. 0 times theorem prover too weak. 20733 trivial. 0 not checked. [2024-10-10 21:46:03,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088709269] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:46:03,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:46:03,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 8, 8] total 160 [2024-10-10 21:46:03,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630436323] [2024-10-10 21:46:03,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:46:03,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2024-10-10 21:46:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:46:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2024-10-10 21:46:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11815, Invalid=13625, Unknown=0, NotChecked=0, Total=25440 [2024-10-10 21:46:03,351 INFO L87 Difference]: Start difference. First operand 461 states and 565 transitions. Second operand has 160 states, 160 states have (on average 1.2) internal successors, (192), 160 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)