./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-multidimensional/init-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-3-u.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 385b06dfd41f8b2cf291934cb4635d07bfe2a63001fa162165126d7b890c1d72 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 22:21:05,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 22:21:05,526 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 22:21:05,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 22:21:05,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 22:21:05,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 22:21:05,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 22:21:05,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 22:21:05,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 22:21:05,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 22:21:05,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 22:21:05,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 22:21:05,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 22:21:05,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 22:21:05,561 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 22:21:05,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 22:21:05,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 22:21:05,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 22:21:05,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 22:21:05,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 22:21:05,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 22:21:05,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 22:21:05,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 22:21:05,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 22:21:05,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 22:21:05,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 22:21:05,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 22:21:05,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 22:21:05,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 22:21:05,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 22:21:05,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 22:21:05,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 22:21:05,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:21:05,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 22:21:05,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 22:21:05,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 22:21:05,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 22:21:05,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 22:21:05,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 22:21:05,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 22:21:05,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 22:21:05,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 22:21:05,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 385b06dfd41f8b2cf291934cb4635d07bfe2a63001fa162165126d7b890c1d72 [2024-10-13 22:21:05,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 22:21:05,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 22:21:05,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 22:21:05,808 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 22:21:05,808 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 22:21:05,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-3-u.c [2024-10-13 22:21:07,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 22:21:07,210 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 22:21:07,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-3-u.c [2024-10-13 22:21:07,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85df865c/cdb763a5566946a8b104b9a016750180/FLAG29b16473c [2024-10-13 22:21:07,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e85df865c/cdb763a5566946a8b104b9a016750180 [2024-10-13 22:21:07,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 22:21:07,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 22:21:07,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 22:21:07,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 22:21:07,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 22:21:07,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29daf1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07, skipping insertion in model container [2024-10-13 22:21:07,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 22:21:07,429 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-multidimensional/init-3-u.c[320,333] [2024-10-13 22:21:07,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:21:07,459 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 22:21:07,471 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-multidimensional/init-3-u.c[320,333] [2024-10-13 22:21:07,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 22:21:07,497 INFO L204 MainTranslator]: Completed translation [2024-10-13 22:21:07,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07 WrapperNode [2024-10-13 22:21:07,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 22:21:07,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 22:21:07,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 22:21:07,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 22:21:07,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,538 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2024-10-13 22:21:07,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 22:21:07,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 22:21:07,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 22:21:07,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 22:21:07,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,558 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 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]. [2024-10-13 22:21:07,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 22:21:07,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 22:21:07,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 22:21:07,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 22:21:07,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (1/1) ... [2024-10-13 22:21:07,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 22:21:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:21:07,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 22:21:07,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 22:21:07,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 22:21:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 22:21:07,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 22:21:07,708 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 22:21:07,710 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 22:21:07,873 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-13 22:21:07,873 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 22:21:07,907 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 22:21:07,907 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-13 22:21:07,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:07 BoogieIcfgContainer [2024-10-13 22:21:07,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 22:21:07,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 22:21:07,911 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 22:21:07,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 22:21:07,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:07" (1/3) ... [2024-10-13 22:21:07,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6e41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:07, skipping insertion in model container [2024-10-13 22:21:07,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:07" (2/3) ... [2024-10-13 22:21:07,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6e41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:07, skipping insertion in model container [2024-10-13 22:21:07,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:07" (3/3) ... [2024-10-13 22:21:07,918 INFO L112 eAbstractionObserver]: Analyzing ICFG init-3-u.c [2024-10-13 22:21:07,933 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 22:21:07,934 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 22:21:07,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 22:21:08,004 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;@51066aa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 22:21:08,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 22:21:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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) [2024-10-13 22:21:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 22:21:08,014 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:08,015 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:08,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:08,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -526685124, now seen corresponding path program 1 times [2024-10-13 22:21:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:08,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122703994] [2024-10-13 22:21:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:08,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:08,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122703994] [2024-10-13 22:21:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122703994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:21:08,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:21:08,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:21:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419752811] [2024-10-13 22:21:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:21:08,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 22:21:08,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 22:21:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:21:08,208 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-13 22:21:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:08,229 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2024-10-13 22:21:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 22:21:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-13 22:21:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:08,237 INFO L225 Difference]: With dead ends: 35 [2024-10-13 22:21:08,237 INFO L226 Difference]: Without dead ends: 16 [2024-10-13 22:21:08,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 22:21:08,241 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:08,242 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:21:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-13 22:21:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-13 22:21:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2024-10-13 22:21:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-10-13 22:21:08,268 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 8 [2024-10-13 22:21:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:08,269 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-10-13 22:21:08,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-13 22:21:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-10-13 22:21:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 22:21:08,269 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:08,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:08,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 22:21:08,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:08,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1381991778, now seen corresponding path program 1 times [2024-10-13 22:21:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:08,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3049410] [2024-10-13 22:21:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:08,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3049410] [2024-10-13 22:21:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3049410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:21:08,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:21:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 22:21:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920937398] [2024-10-13 22:21:08,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:21:08,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 22:21:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 22:21:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 22:21:08,401 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-13 22:21:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:08,440 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2024-10-13 22:21:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 22:21:08,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-13 22:21:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:08,441 INFO L225 Difference]: With dead ends: 31 [2024-10-13 22:21:08,441 INFO L226 Difference]: Without dead ends: 21 [2024-10-13 22:21:08,442 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 [2024-10-13 22:21:08,443 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:08,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:21:08,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-13 22:21:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2024-10-13 22:21:08,446 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) [2024-10-13 22:21:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-10-13 22:21:08,447 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2024-10-13 22:21:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:08,447 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-13 22:21:08,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-13 22:21:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-10-13 22:21:08,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-13 22:21:08,448 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:08,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:08,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 22:21:08,448 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:08,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash -236778402, now seen corresponding path program 1 times [2024-10-13 22:21:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:08,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523678231] [2024-10-13 22:21:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:08,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523678231] [2024-10-13 22:21:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523678231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:21:08,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:21:08,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:21:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772450351] [2024-10-13 22:21:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:21:08,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:21:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:21:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:21:08,550 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-10-13 22:21:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:08,607 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-10-13 22:21:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:21:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-10-13 22:21:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:08,610 INFO L225 Difference]: With dead ends: 42 [2024-10-13 22:21:08,611 INFO L226 Difference]: Without dead ends: 27 [2024-10-13 22:21:08,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:21:08,612 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:08,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 14 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:21:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-13 22:21:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2024-10-13 22:21:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2024-10-13 22:21:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-10-13 22:21:08,618 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2024-10-13 22:21:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:08,618 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-10-13 22:21:08,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-10-13 22:21:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-10-13 22:21:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 22:21:08,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:08,619 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:08,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 22:21:08,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:08,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:08,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1385813380, now seen corresponding path program 1 times [2024-10-13 22:21:08,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:08,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408396088] [2024-10-13 22:21:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:08,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:08,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408396088] [2024-10-13 22:21:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408396088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 22:21:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 22:21:08,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 22:21:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821211850] [2024-10-13 22:21:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 22:21:08,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 22:21:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 22:21:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:21:08,684 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-10-13 22:21:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:08,730 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-10-13 22:21:08,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 22:21:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-10-13 22:21:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:08,734 INFO L225 Difference]: With dead ends: 42 [2024-10-13 22:21:08,734 INFO L226 Difference]: Without dead ends: 25 [2024-10-13 22:21:08,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 22:21:08,735 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:08,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 22:21:08,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-13 22:21:08,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2024-10-13 22:21:08,742 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) [2024-10-13 22:21:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-10-13 22:21:08,742 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2024-10-13 22:21:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:08,743 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-10-13 22:21:08,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-10-13 22:21:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-10-13 22:21:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-13 22:21:08,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:08,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:08,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 22:21:08,744 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:08,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1868918897, now seen corresponding path program 1 times [2024-10-13 22:21:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441716143] [2024-10-13 22:21:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:08,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:08,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441716143] [2024-10-13 22:21:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441716143] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:21:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697756407] [2024-10-13 22:21:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:08,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:08,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:21:08,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:21:08,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 22:21:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:08,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 22:21:08,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:21:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:08,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:21:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697756407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:21:09,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:21:09,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 22:21:09,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489534441] [2024-10-13 22:21:09,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:21:09,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 22:21:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 22:21:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-13 22:21:09,044 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2024-10-13 22:21:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:09,138 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-10-13 22:21:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 22:21:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) Word has length 15 [2024-10-13 22:21:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:09,139 INFO L225 Difference]: With dead ends: 58 [2024-10-13 22:21:09,139 INFO L226 Difference]: Without dead ends: 39 [2024-10-13 22:21:09,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-13 22:21:09,140 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 88 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:09,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 35 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:21:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-13 22:21:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2024-10-13 22:21:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2024-10-13 22:21:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-10-13 22:21:09,149 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 15 [2024-10-13 22:21:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:09,149 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-10-13 22:21:09,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2024-10-13 22:21:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-10-13 22:21:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-13 22:21:09,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:09,150 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:09,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 22:21:09,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:09,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:09,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash 165697340, now seen corresponding path program 2 times [2024-10-13 22:21:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240112352] [2024-10-13 22:21:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:09,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:09,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:09,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240112352] [2024-10-13 22:21:09,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240112352] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:21:09,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705511585] [2024-10-13 22:21:09,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 22:21:09,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:21:09,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:21:09,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 22:21:09,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 22:21:09,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:21:09,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 22:21:09,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:21:09,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:09,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:21:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:09,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705511585] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:21:09,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:21:09,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-13 22:21:09,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714044948] [2024-10-13 22:21:09,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:21:09,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 22:21:09,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 22:21:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-13 22:21:09,752 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 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) [2024-10-13 22:21:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:09,951 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2024-10-13 22:21:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 22:21:09,952 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 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 18 [2024-10-13 22:21:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:09,953 INFO L225 Difference]: With dead ends: 106 [2024-10-13 22:21:09,953 INFO L226 Difference]: Without dead ends: 75 [2024-10-13 22:21:09,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-13 22:21:09,954 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 122 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:09,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 69 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 22:21:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-13 22:21:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2024-10-13 22:21:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 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) [2024-10-13 22:21:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-10-13 22:21:09,967 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2024-10-13 22:21:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:09,967 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-10-13 22:21:09,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 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) [2024-10-13 22:21:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-10-13 22:21:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-13 22:21:09,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:09,969 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:09,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 22:21:10,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 22:21:10,170 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:10,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 308962908, now seen corresponding path program 3 times [2024-10-13 22:21:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:10,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501034799] [2024-10-13 22:21:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 22:21:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501034799] [2024-10-13 22:21:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501034799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:21:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832783047] [2024-10-13 22:21:10,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 22:21:10,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:10,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:21:10,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:21:10,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 22:21:10,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 22:21:10,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:21:10,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 22:21:10,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:21:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 22:21:10,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:21:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-13 22:21:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832783047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:21:10,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:21:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3, 3] total 17 [2024-10-13 22:21:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229495783] [2024-10-13 22:21:10,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:21:10,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 22:21:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 22:21:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-10-13 22:21:10,600 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 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) [2024-10-13 22:21:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:11,517 INFO L93 Difference]: Finished difference Result 387 states and 429 transitions. [2024-10-13 22:21:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-13 22:21:11,517 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 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 24 [2024-10-13 22:21:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:11,519 INFO L225 Difference]: With dead ends: 387 [2024-10-13 22:21:11,519 INFO L226 Difference]: Without dead ends: 332 [2024-10-13 22:21:11,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1310, Invalid=2722, Unknown=0, NotChecked=0, Total=4032 [2024-10-13 22:21:11,521 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1203 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:11,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 63 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 22:21:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-13 22:21:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 112. [2024-10-13 22:21:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 111 states have internal predecessors, (133), 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) [2024-10-13 22:21:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2024-10-13 22:21:11,541 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 24 [2024-10-13 22:21:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:11,541 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2024-10-13 22:21:11,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 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) [2024-10-13 22:21:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2024-10-13 22:21:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-13 22:21:11,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:11,545 INFO L215 NwaCegarLoop]: trace histogram [44, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:11,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 22:21:11,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:11,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:11,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash -648496418, now seen corresponding path program 4 times [2024-10-13 22:21:11,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:11,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735125649] [2024-10-13 22:21:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 443 proven. 66 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2024-10-13 22:21:12,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:12,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735125649] [2024-10-13 22:21:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735125649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:21:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336579031] [2024-10-13 22:21:12,116 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 22:21:12,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:12,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:21:12,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:21:12,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 22:21:12,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 22:21:12,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 22:21:12,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 22:21:12,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 22:21:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 506 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-13 22:21:12,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 22:21:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 506 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-13 22:21:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336579031] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 22:21:12,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 22:21:12,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 43 [2024-10-13 22:21:12,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484914155] [2024-10-13 22:21:12,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 22:21:12,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-13 22:21:12,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 22:21:12,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-13 22:21:12,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1394, Unknown=0, NotChecked=0, Total=1806 [2024-10-13 22:21:12,709 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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) [2024-10-13 22:21:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 22:21:14,392 INFO L93 Difference]: Finished difference Result 762 states and 859 transitions. [2024-10-13 22:21:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-13 22:21:14,393 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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 76 [2024-10-13 22:21:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 22:21:14,395 INFO L225 Difference]: With dead ends: 762 [2024-10-13 22:21:14,395 INFO L226 Difference]: Without dead ends: 653 [2024-10-13 22:21:14,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3760 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2878, Invalid=9332, Unknown=0, NotChecked=0, Total=12210 [2024-10-13 22:21:14,402 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2103 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-13 22:21:14,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 309 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-13 22:21:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-10-13 22:21:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 515. [2024-10-13 22:21:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.1770428015564203) internal successors, (605), 514 states have internal predecessors, (605), 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) [2024-10-13 22:21:14,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 605 transitions. [2024-10-13 22:21:14,459 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 605 transitions. Word has length 76 [2024-10-13 22:21:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 22:21:14,459 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 605 transitions. [2024-10-13 22:21:14,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 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) [2024-10-13 22:21:14,459 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 605 transitions. [2024-10-13 22:21:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-10-13 22:21:14,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 22:21:14,462 INFO L215 NwaCegarLoop]: trace histogram [240, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 22:21:14,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 22:21:14,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:14,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 22:21:14,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 22:21:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -392075754, now seen corresponding path program 5 times [2024-10-13 22:21:14,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 22:21:14,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709065827] [2024-10-13 22:21:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 22:21:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 22:21:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 22:21:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 34152 backedges. 3238 proven. 78 refuted. 0 times theorem prover too weak. 30836 trivial. 0 not checked. [2024-10-13 22:21:15,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 22:21:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709065827] [2024-10-13 22:21:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709065827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 22:21:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024168448] [2024-10-13 22:21:15,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 22:21:15,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 22:21:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 22:21:15,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 22:21:15,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process