./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-programs/partial_mod_count_limited_4.c --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-programs/partial_mod_count_limited_4.c -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 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:04:36,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:04:36,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:04:36,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:04:36,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:04:36,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:04:36,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:04:36,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:04:36,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:04:36,546 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:04:36,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:04:36,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:04:36,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:04:36,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:04:36,548 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:04:36,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:04:36,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:04:36,550 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:04:36,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:04:36,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:04:36,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:04:36,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:04:36,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:04:36,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:04:36,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:04:36,555 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:04:36,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:04:36,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:04:36,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:04:36,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:04:36,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:04:36,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:04:36,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:04:36,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:04:36,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:04:36,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:04:36,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:04:36,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:04:36,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:04:36,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:04:36,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:04:36,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:04:36,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66c26537aa176e76686ba25b67c86aedfbccc400319942d9855c43a2b470a76b [2024-10-10 22:04:36,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:04:36,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:04:36,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:04:36,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:04:36,752 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:04:36,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2024-10-10 22:04:37,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:04:38,137 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:04:38,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_4.c [2024-10-10 22:04:38,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3454712e3/a7012067d62e453f885d4cfc8967f0a7/FLAG1f9b15e1d [2024-10-10 22:04:38,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3454712e3/a7012067d62e453f885d4cfc8967f0a7 [2024-10-10 22:04:38,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:04:38,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:04:38,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:04:38,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:04:38,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:04:38,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30383a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38, skipping insertion in model container [2024-10-10 22:04:38,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:04:38,292 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-programs/partial_mod_count_limited_4.c[331,344] [2024-10-10 22:04:38,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:04:38,312 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:04:38,321 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-programs/partial_mod_count_limited_4.c[331,344] [2024-10-10 22:04:38,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:04:38,343 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:04:38,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38 WrapperNode [2024-10-10 22:04:38,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:04:38,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:04:38,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:04:38,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:04:38,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,367 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-10-10 22:04:38,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:04:38,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:04:38,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:04:38,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:04:38,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,386 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-10 22:04:38,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,396 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:04:38,397 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:04:38,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:04:38,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:04:38,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (1/1) ... [2024-10-10 22:04:38,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:04:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:38,424 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 22:04:38,426 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 22:04:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:04:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:04:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:04:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:04:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:04:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:04:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:04:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:04:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:04:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:04:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:04:38,552 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:04:38,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:04:38,687 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-10 22:04:38,687 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:04:38,725 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:04:38,727 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-10 22:04:38,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:04:38 BoogieIcfgContainer [2024-10-10 22:04:38,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:04:38,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:04:38,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:04:38,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:04:38,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:04:38" (1/3) ... [2024-10-10 22:04:38,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53953fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:04:38, skipping insertion in model container [2024-10-10 22:04:38,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:04:38" (2/3) ... [2024-10-10 22:04:38,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53953fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:04:38, skipping insertion in model container [2024-10-10 22:04:38,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:04:38" (3/3) ... [2024-10-10 22:04:38,736 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_4.c [2024-10-10 22:04:38,749 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:04:38,749 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:04:38,800 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:04:38,808 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;@745dca21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:04:38,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:04:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 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 22:04:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 22:04:38,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:38,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:38,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:38,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash -245393117, now seen corresponding path program 1 times [2024-10-10 22:04:38,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:38,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020259755] [2024-10-10 22:04:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:38,988 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 22:04:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020259755] [2024-10-10 22:04:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020259755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:38,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:04:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161918505] [2024-10-10 22:04:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:38,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:04:38,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:04:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:04:39,019 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 22:04:39,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:39,041 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2024-10-10 22:04:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:04:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 22:04:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:39,048 INFO L225 Difference]: With dead ends: 34 [2024-10-10 22:04:39,049 INFO L226 Difference]: Without dead ends: 16 [2024-10-10 22:04:39,051 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 [2024-10-10 22:04:39,055 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:39,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-10 22:04:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-10 22:04:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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 22:04:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2024-10-10 22:04:39,082 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 10 [2024-10-10 22:04:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:39,083 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-10-10 22:04:39,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 22:04:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2024-10-10 22:04:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-10 22:04:39,084 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:39,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:39,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:04:39,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:39,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1639468179, now seen corresponding path program 1 times [2024-10-10 22:04:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036644980] [2024-10-10 22:04:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:39,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:39,260 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 22:04:39,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036644980] [2024-10-10 22:04:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036644980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:04:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331267120] [2024-10-10 22:04:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:39,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:04:39,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:04:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:04:39,264 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:04:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:39,302 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2024-10-10 22:04:39,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:04:39,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:04:39,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:39,303 INFO L225 Difference]: With dead ends: 41 [2024-10-10 22:04:39,303 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:04:39,303 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 [2024-10-10 22:04:39,304 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:39,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:04:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2024-10-10 22:04:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 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 22:04:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-10 22:04:39,308 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-10-10 22:04:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:39,308 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-10 22:04:39,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 22:04:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-10 22:04:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-10 22:04:39,309 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:39,309 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:39,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:04:39,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:39,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 563464204, now seen corresponding path program 1 times [2024-10-10 22:04:39,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584618317] [2024-10-10 22:04:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584618317] [2024-10-10 22:04:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584618317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:04:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049708803] [2024-10-10 22:04:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:39,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:04:39,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:04:39,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:04:39,556 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:04:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:39,632 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-10-10 22:04:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:04:39,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 [2024-10-10 22:04:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:39,633 INFO L225 Difference]: With dead ends: 41 [2024-10-10 22:04:39,633 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:04:39,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:04:39,634 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:39,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:04:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:04:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2024-10-10 22:04:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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) [2024-10-10 22:04:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-10 22:04:39,644 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2024-10-10 22:04:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:39,644 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-10 22:04:39,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:04:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-10 22:04:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-10 22:04:39,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:39,645 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:39,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:04:39,645 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:39,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1243522574, now seen corresponding path program 1 times [2024-10-10 22:04:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102283024] [2024-10-10 22:04:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:39,726 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 22:04:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102283024] [2024-10-10 22:04:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102283024] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725031994] [2024-10-10 22:04:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:39,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:39,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:39,729 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 22:04:39,732 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 22:04:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:39,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:04:39,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:39,862 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 22:04:39,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:39,912 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 22:04:39,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725031994] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:39,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:39,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-10 22:04:39,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496705374] [2024-10-10 22:04:39,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:39,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 22:04:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 22:04:39,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:04:39,917 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 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 22:04:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:40,021 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2024-10-10 22:04:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:04:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 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) Word has length 15 [2024-10-10 22:04:40,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:40,023 INFO L225 Difference]: With dead ends: 67 [2024-10-10 22:04:40,023 INFO L226 Difference]: Without dead ends: 54 [2024-10-10 22:04:40,024 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 [2024-10-10 22:04:40,025 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 118 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:40,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 48 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:04:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-10 22:04:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2024-10-10 22:04:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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 22:04:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-10-10 22:04:40,035 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15 [2024-10-10 22:04:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:40,035 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-10-10 22:04:40,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 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 22:04:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-10-10 22:04:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-10 22:04:40,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:40,037 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:40,050 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 22:04:40,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:40,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:40,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:40,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1322989487, now seen corresponding path program 1 times [2024-10-10 22:04:40,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:40,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428018032] [2024-10-10 22:04:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-10 22:04:40,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:40,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428018032] [2024-10-10 22:04:40,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428018032] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:40,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103777922] [2024-10-10 22:04:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:40,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:40,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:40,490 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 22:04:40,492 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 22:04:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:40,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:04:40,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:40,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:40,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103777922] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:40,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:40,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-10-10 22:04:40,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030702647] [2024-10-10 22:04:40,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:40,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-10 22:04:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-10 22:04:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:04:40,786 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 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 22:04:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:41,139 INFO L93 Difference]: Finished difference Result 161 states and 206 transitions. [2024-10-10 22:04:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-10 22:04:41,140 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 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 30 [2024-10-10 22:04:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:41,141 INFO L225 Difference]: With dead ends: 161 [2024-10-10 22:04:41,141 INFO L226 Difference]: Without dead ends: 141 [2024-10-10 22:04:41,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2024-10-10 22:04:41,142 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 352 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:41,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 108 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:04:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-10 22:04:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 62. [2024-10-10 22:04:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 61 states have internal predecessors, (77), 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 22:04:41,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-10-10 22:04:41,158 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 30 [2024-10-10 22:04:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:41,158 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-10-10 22:04:41,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 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 22:04:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-10-10 22:04:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:04:41,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:41,161 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:41,175 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 22:04:41,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:41,362 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:41,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1273021199, now seen corresponding path program 2 times [2024-10-10 22:04:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587746891] [2024-10-10 22:04:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-10-10 22:04:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587746891] [2024-10-10 22:04:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587746891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:04:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-10 22:04:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173848307] [2024-10-10 22:04:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:41,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-10 22:04:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-10 22:04:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-10 22:04:41,718 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2024-10-10 22:04:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:41,789 INFO L93 Difference]: Finished difference Result 183 states and 235 transitions. [2024-10-10 22:04:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:04:41,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) Word has length 60 [2024-10-10 22:04:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:41,792 INFO L225 Difference]: With dead ends: 183 [2024-10-10 22:04:41,792 INFO L226 Difference]: Without dead ends: 143 [2024-10-10 22:04:41,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:04:41,793 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:41,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-10 22:04:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 109. [2024-10-10 22:04:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.25) internal successors, (135), 108 states have internal predecessors, (135), 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 22:04:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 135 transitions. [2024-10-10 22:04:41,810 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 135 transitions. Word has length 60 [2024-10-10 22:04:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:41,810 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 135 transitions. [2024-10-10 22:04:41,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2024-10-10 22:04:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 135 transitions. [2024-10-10 22:04:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:04:41,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:41,811 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:41,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 22:04:41,811 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:41,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1176578931, now seen corresponding path program 3 times [2024-10-10 22:04:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999675159] [2024-10-10 22:04:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 133 proven. 26 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 22:04:42,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:42,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999675159] [2024-10-10 22:04:42,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999675159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:42,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78341177] [2024-10-10 22:04:42,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:04:42,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:42,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:42,175 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 22:04:42,176 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 22:04:42,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-10 22:04:42,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:04:42,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-10 22:04:42,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-10 22:04:42,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:04:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78341177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:42,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:04:42,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-10 22:04:42,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107677130] [2024-10-10 22:04:42,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:42,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:04:42,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:04:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:04:42,545 INFO L87 Difference]: Start difference. First operand 109 states and 135 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 22:04:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:42,584 INFO L93 Difference]: Finished difference Result 116 states and 143 transitions. [2024-10-10 22:04:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:04:42,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 60 [2024-10-10 22:04:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:42,586 INFO L225 Difference]: With dead ends: 116 [2024-10-10 22:04:42,586 INFO L226 Difference]: Without dead ends: 114 [2024-10-10 22:04:42,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:04:42,586 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:42,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:04:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-10 22:04:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-10-10 22:04:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.247787610619469) internal successors, (141), 113 states have internal predecessors, (141), 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 22:04:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 141 transitions. [2024-10-10 22:04:42,603 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 141 transitions. Word has length 60 [2024-10-10 22:04:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:42,603 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 141 transitions. [2024-10-10 22:04:42,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 22:04:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 141 transitions. [2024-10-10 22:04:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-10 22:04:42,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:42,604 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:42,616 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 22:04:42,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:42,805 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:42,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:42,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1176519349, now seen corresponding path program 1 times [2024-10-10 22:04:42,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:42,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879947052] [2024-10-10 22:04:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 133 proven. 26 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-10 22:04:43,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879947052] [2024-10-10 22:04:43,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879947052] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059021557] [2024-10-10 22:04:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:43,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:43,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:43,149 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 22:04:43,151 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 22:04:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:43,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:04:43,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:43,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:04:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059021557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:43,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 30 [2024-10-10 22:04:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048316301] [2024-10-10 22:04:43,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:43,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-10 22:04:43,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-10 22:04:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=574, Unknown=0, NotChecked=0, Total=930 [2024-10-10 22:04:43,674 INFO L87 Difference]: Start difference. First operand 114 states and 141 transitions. Second operand has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 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 22:04:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:45,333 INFO L93 Difference]: Finished difference Result 640 states and 824 transitions. [2024-10-10 22:04:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-10-10 22:04:45,334 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 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 60 [2024-10-10 22:04:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:45,335 INFO L225 Difference]: With dead ends: 640 [2024-10-10 22:04:45,336 INFO L226 Difference]: Without dead ends: 578 [2024-10-10 22:04:45,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2497 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2591, Invalid=4719, Unknown=0, NotChecked=0, Total=7310 [2024-10-10 22:04:45,341 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 553 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:45,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 173 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:04:45,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-10-10 22:04:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 159. [2024-10-10 22:04:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.2974683544303798) internal successors, (205), 158 states have internal predecessors, (205), 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 22:04:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2024-10-10 22:04:45,357 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 60 [2024-10-10 22:04:45,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:45,358 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2024-10-10 22:04:45,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.354838709677419) internal successors, (135), 30 states have internal predecessors, (135), 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 22:04:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2024-10-10 22:04:45,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-10 22:04:45,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:45,359 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:45,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:04:45,560 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,SelfDestructingSolverStorable7 [2024-10-10 22:04:45,560 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:45,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:45,561 INFO L85 PathProgramCache]: Analyzing trace with hash -219280783, now seen corresponding path program 2 times [2024-10-10 22:04:45,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:45,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42675317] [2024-10-10 22:04:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:45,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 615 proven. 297 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-10-10 22:04:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42675317] [2024-10-10 22:04:46,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42675317] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417138733] [2024-10-10 22:04:46,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:04:46,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:46,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:46,428 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 22:04:46,429 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 22:04:46,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-10 22:04:46,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:04:46,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-10 22:04:46,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2024-10-10 22:04:46,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:04:46,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417138733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:04:46,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:04:46,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 17 [2024-10-10 22:04:46,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141117171] [2024-10-10 22:04:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:04:46,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:04:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:04:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2024-10-10 22:04:46,943 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 22:04:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:47,028 INFO L93 Difference]: Finished difference Result 166 states and 213 transitions. [2024-10-10 22:04:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 22:04:47,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 120 [2024-10-10 22:04:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:47,030 INFO L225 Difference]: With dead ends: 166 [2024-10-10 22:04:47,030 INFO L226 Difference]: Without dead ends: 164 [2024-10-10 22:04:47,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2024-10-10 22:04:47,030 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:47,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:04:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-10 22:04:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-10-10 22:04:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.294478527607362) internal successors, (211), 163 states have internal predecessors, (211), 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 22:04:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2024-10-10 22:04:47,046 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 120 [2024-10-10 22:04:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:47,046 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2024-10-10 22:04:47,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 22:04:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2024-10-10 22:04:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-10 22:04:47,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:47,054 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:47,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:04:47,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:47,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:47,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1396320845, now seen corresponding path program 1 times [2024-10-10 22:04:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022229413] [2024-10-10 22:04:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 615 proven. 297 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-10 22:04:47,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022229413] [2024-10-10 22:04:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022229413] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82849014] [2024-10-10 22:04:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:47,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:47,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:47,976 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 22:04:47,977 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 22:04:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:48,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-10 22:04:48,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:04:48,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:04:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82849014] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:49,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:49,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 25] total 61 [2024-10-10 22:04:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082998905] [2024-10-10 22:04:49,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:49,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-10 22:04:49,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:49,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-10 22:04:49,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1394, Invalid=2388, Unknown=0, NotChecked=0, Total=3782 [2024-10-10 22:04:49,342 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 62 states, 62 states have (on average 4.838709677419355) internal successors, (300), 61 states have internal predecessors, (300), 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 22:04:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:04:50,897 INFO L93 Difference]: Finished difference Result 5220 states and 6684 transitions. [2024-10-10 22:04:50,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-10 22:04:50,897 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.838709677419355) internal successors, (300), 61 states have internal predecessors, (300), 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 125 [2024-10-10 22:04:50,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:04:50,911 INFO L225 Difference]: With dead ends: 5220 [2024-10-10 22:04:50,911 INFO L226 Difference]: Without dead ends: 5068 [2024-10-10 22:04:50,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2567, Invalid=4573, Unknown=0, NotChecked=0, Total=7140 [2024-10-10 22:04:50,915 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1928 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:04:50,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 387 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:04:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2024-10-10 22:04:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 984. [2024-10-10 22:04:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 1.2065106815869786) internal successors, (1186), 983 states have internal predecessors, (1186), 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 22:04:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1186 transitions. [2024-10-10 22:04:50,984 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1186 transitions. Word has length 125 [2024-10-10 22:04:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:04:50,984 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1186 transitions. [2024-10-10 22:04:50,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.838709677419355) internal successors, (300), 61 states have internal predecessors, (300), 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 22:04:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1186 transitions. [2024-10-10 22:04:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-10-10 22:04:50,992 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:04:50,992 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 34, 23, 23, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:04:51,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 22:04:51,196 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,SelfDestructingSolverStorable9 [2024-10-10 22:04:51,197 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:04:51,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:04:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1229055769, now seen corresponding path program 2 times [2024-10-10 22:04:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:04:51,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252827304] [2024-10-10 22:04:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:04:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:04:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:04:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 1024 proven. 8 refuted. 0 times theorem prover too weak. 4193 trivial. 0 not checked. [2024-10-10 22:04:51,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:04:51,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252827304] [2024-10-10 22:04:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252827304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:04:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600498387] [2024-10-10 22:04:51,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:04:51,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:04:51,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:04:51,827 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 22:04:51,828 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 22:04:52,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:04:52,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:04:52,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-10 22:04:52,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:04:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:04:53,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:04:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-10 22:04:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600498387] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:04:55,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:04:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 49, 49] total 105 [2024-10-10 22:04:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161893328] [2024-10-10 22:04:55,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:04:55,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-10-10 22:04:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:04:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-10-10 22:04:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4680, Invalid=6240, Unknown=0, NotChecked=0, Total=10920 [2024-10-10 22:04:55,165 INFO L87 Difference]: Start difference. First operand 984 states and 1186 transitions. Second operand has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 105 states have internal predecessors, (506), 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 22:05:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:05:10,452 INFO L93 Difference]: Finished difference Result 3168 states and 3906 transitions. [2024-10-10 22:05:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2024-10-10 22:05:10,454 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 105 states have internal predecessors, (506), 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 245 [2024-10-10 22:05:10,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:05:10,459 INFO L225 Difference]: With dead ends: 3168 [2024-10-10 22:05:10,459 INFO L226 Difference]: Without dead ends: 2206 [2024-10-10 22:05:10,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59286 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=47127, Invalid=103029, Unknown=0, NotChecked=0, Total=150156 [2024-10-10 22:05:10,470 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4754 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:05:10,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 611 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-10 22:05:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2024-10-10 22:05:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 586. [2024-10-10 22:05:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.1692307692307693) internal successors, (684), 585 states have internal predecessors, (684), 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 22:05:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 684 transitions. [2024-10-10 22:05:10,501 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 684 transitions. Word has length 245 [2024-10-10 22:05:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:05:10,501 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 684 transitions. [2024-10-10 22:05:10,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 4.819047619047619) internal successors, (506), 105 states have internal predecessors, (506), 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 22:05:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 684 transitions. [2024-10-10 22:05:10,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-10 22:05:10,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:05:10,506 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 47, 47, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:05:10,515 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 22:05:10,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:10,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:05:10,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:05:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1878432051, now seen corresponding path program 3 times [2024-10-10 22:05:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:05:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931440083] [2024-10-10 22:05:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:05:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:05:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:05:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 11091 proven. 5499 refuted. 0 times theorem prover too weak. 5363 trivial. 0 not checked. [2024-10-10 22:05:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:05:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931440083] [2024-10-10 22:05:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931440083] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:05:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91543514] [2024-10-10 22:05:17,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:05:17,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:05:17,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:05:17,124 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 22:05:17,125 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 22:05:17,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:05:17,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:05:17,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-10 22:05:17,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:05:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2024-10-10 22:05:19,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:05:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2024-10-10 22:05:23,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91543514] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:05:23,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:05:23,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 6, 7] total 61 [2024-10-10 22:05:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616697780] [2024-10-10 22:05:23,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:05:23,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-10 22:05:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:05:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-10 22:05:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1280, Invalid=2502, Unknown=0, NotChecked=0, Total=3782 [2024-10-10 22:05:23,738 INFO L87 Difference]: Start difference. First operand 586 states and 684 transitions. Second operand has 62 states, 62 states have (on average 4.774193548387097) internal successors, (296), 61 states have internal predecessors, (296), 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)