./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.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-multidimensional/min-2-u.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 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:11:47,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:11:47,333 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:11:47,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:11:47,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:11:47,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:11:47,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:11:47,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:11:47,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:11:47,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:11:47,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:11:47,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:11:47,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:11:47,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:11:47,372 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:11:47,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:11:47,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:11:47,372 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:11:47,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:11:47,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:11:47,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:11:47,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:11:47,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:11:47,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:11:47,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:11:47,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:11:47,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:11:47,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:11:47,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:11:47,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:11:47,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:11:47,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:11:47,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:11:47,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:11:47,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:11:47,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:11:47,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:11:47,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:11:47,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:11:47,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:11:47,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:11:47,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:11:47,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda [2024-10-10 22:11:47,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:11:47,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:11:47,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:11:47,711 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:11:47,711 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:11:47,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-10-10 22:11:49,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:11:49,430 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:11:49,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-10-10 22:11:49,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c665451e9/f8df8811277c4e7fba958399ba02916d/FLAGde54eb3e7 [2024-10-10 22:11:49,757 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c665451e9/f8df8811277c4e7fba958399ba02916d [2024-10-10 22:11:49,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:11:49,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:11:49,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:11:49,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:11:49,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:11:49,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:11:49" (1/1) ... [2024-10-10 22:11:49,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be8bf84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:49, skipping insertion in model container [2024-10-10 22:11:49,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:11:49" (1/1) ... [2024-10-10 22:11:49,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:11:49,962 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c[319,332] [2024-10-10 22:11:49,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:11:49,985 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:11:49,996 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/min-2-u.c[319,332] [2024-10-10 22:11:50,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:11:50,021 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:11:50,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50 WrapperNode [2024-10-10 22:11:50,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:11:50,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:11:50,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:11:50,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:11:50,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,055 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-10-10 22:11:50,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:11:50,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:11:50,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:11:50,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:11:50,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,079 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-10 22:11:50,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:11:50,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:11:50,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:11:50,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:11:50,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (1/1) ... [2024-10-10 22:11:50,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:11:50,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:50,136 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 22:11:50,139 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 22:11:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:11:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:11:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:11:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:11:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:11:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:11:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:11:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:11:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:11:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:11:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:11:50,271 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:11:50,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:11:50,466 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-10-10 22:11:50,466 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:11:50,491 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:11:50,491 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-10 22:11:50,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:11:50 BoogieIcfgContainer [2024-10-10 22:11:50,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:11:50,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:11:50,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:11:50,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:11:50,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:11:49" (1/3) ... [2024-10-10 22:11:50,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc97116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:11:50, skipping insertion in model container [2024-10-10 22:11:50,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:11:50" (2/3) ... [2024-10-10 22:11:50,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc97116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:11:50, skipping insertion in model container [2024-10-10 22:11:50,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:11:50" (3/3) ... [2024-10-10 22:11:50,500 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2024-10-10 22:11:50,514 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:11:50,515 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:11:50,568 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:11:50,575 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;@543ef5a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:11:50,576 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:11:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 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 22:11:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 22:11:50,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:50,585 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:50,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:50,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1260479934, now seen corresponding path program 1 times [2024-10-10 22:11:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:50,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809616677] [2024-10-10 22:11:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:50,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:50,896 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 22:11:50,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:50,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809616677] [2024-10-10 22:11:50,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809616677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:50,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:11:50,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:11:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495102595] [2024-10-10 22:11:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:50,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:11:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:11:50,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:11:50,930 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:50,982 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2024-10-10 22:11:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:11:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 22:11:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:50,991 INFO L225 Difference]: With dead ends: 42 [2024-10-10 22:11:50,991 INFO L226 Difference]: Without dead ends: 21 [2024-10-10 22:11:50,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:11:50,996 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:50,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:11:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-10 22:11:51,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-10 22:11:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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 22:11:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-10-10 22:11:51,027 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2024-10-10 22:11:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:51,028 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-10 22:11:51,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-10-10 22:11:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-10 22:11:51,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:51,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:51,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:11:51,030 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:51,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash 800318851, now seen corresponding path program 1 times [2024-10-10 22:11:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103578179] [2024-10-10 22:11:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:51,177 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 22:11:51,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:51,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103578179] [2024-10-10 22:11:51,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103578179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:51,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:11:51,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:11:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823684166] [2024-10-10 22:11:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:51,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:11:51,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:11:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:11:51,185 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:11:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:51,253 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-10-10 22:11:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:11:51,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2024-10-10 22:11:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:51,256 INFO L225 Difference]: With dead ends: 45 [2024-10-10 22:11:51,256 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 22:11:51,256 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 22:11:51,258 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:51,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:11:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 22:11:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-10 22:11:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 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 22:11:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-10-10 22:11:51,271 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2024-10-10 22:11:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:51,272 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-10-10 22:11:51,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 22:11:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2024-10-10 22:11:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-10 22:11:51,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:51,274 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:51,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:11:51,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:51,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1845944019, now seen corresponding path program 1 times [2024-10-10 22:11:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923363382] [2024-10-10 22:11:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:51,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923363382] [2024-10-10 22:11:51,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923363382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:11:51,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:11:51,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:11:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075148129] [2024-10-10 22:11:51,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:11:51,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:11:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:51,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:11:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:11:51,431 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:51,512 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-10-10 22:11:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:11:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-10 22:11:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:51,515 INFO L225 Difference]: With dead ends: 48 [2024-10-10 22:11:51,515 INFO L226 Difference]: Without dead ends: 39 [2024-10-10 22:11:51,515 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 22:11:51,516 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:51,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:11:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-10 22:11:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2024-10-10 22:11:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 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 22:11:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-10-10 22:11:51,531 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2024-10-10 22:11:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:51,531 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-10-10 22:11:51,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:11:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-10-10 22:11:51,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-10 22:11:51,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:51,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:51,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:11:51,533 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:51,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash -371629433, now seen corresponding path program 1 times [2024-10-10 22:11:51,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461365881] [2024-10-10 22:11:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:51,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:51,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461365881] [2024-10-10 22:11:51,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461365881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624883695] [2024-10-10 22:11:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:51,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:51,670 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 22:11:51,671 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 22:11:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:51,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:11:51,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:51,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:11:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624883695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:51,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:51,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-10 22:11:51,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941945050] [2024-10-10 22:11:51,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:51,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-10 22:11:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:51,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-10 22:11:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-10 22:11:51,894 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 22:11:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:52,010 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2024-10-10 22:11:52,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-10 22:11:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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) Word has length 19 [2024-10-10 22:11:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:52,012 INFO L225 Difference]: With dead ends: 71 [2024-10-10 22:11:52,012 INFO L226 Difference]: Without dead ends: 50 [2024-10-10 22:11:52,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 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 22:11:52,013 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 71 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:52,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 49 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:11:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-10 22:11:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-10-10 22:11:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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 22:11:52,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-10-10 22:11:52,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 19 [2024-10-10 22:11:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:52,031 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-10-10 22:11:52,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 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 22:11:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-10-10 22:11:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-10 22:11:52,032 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:52,032 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:52,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:11:52,233 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 22:11:52,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:52,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1826388551, now seen corresponding path program 2 times [2024-10-10 22:11:52,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:52,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461550292] [2024-10-10 22:11:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 22:11:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461550292] [2024-10-10 22:11:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461550292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970360979] [2024-10-10 22:11:52,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:11:52,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:52,474 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 22:11:52,476 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 22:11:52,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:11:52,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:52,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-10 22:11:52,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 22:11:52,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-10 22:11:52,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970360979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:52,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:52,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-10-10 22:11:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762786018] [2024-10-10 22:11:52,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:52,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:11:52,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:11:52,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:11:52,763 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 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 22:11:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:53,072 INFO L93 Difference]: Finished difference Result 146 states and 191 transitions. [2024-10-10 22:11:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-10 22:11:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 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 31 [2024-10-10 22:11:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:53,074 INFO L225 Difference]: With dead ends: 146 [2024-10-10 22:11:53,074 INFO L226 Difference]: Without dead ends: 104 [2024-10-10 22:11:53,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-10 22:11:53,076 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 227 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:53,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 77 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:11:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-10 22:11:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2024-10-10 22:11:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 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 22:11:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2024-10-10 22:11:53,089 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2024-10-10 22:11:53,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:53,090 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2024-10-10 22:11:53,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 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 22:11:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2024-10-10 22:11:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-10 22:11:53,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:53,091 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:53,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:11:53,292 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 22:11:53,292 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:53,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1010214521, now seen corresponding path program 3 times [2024-10-10 22:11:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687490848] [2024-10-10 22:11:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-10 22:11:53,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:53,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687490848] [2024-10-10 22:11:53,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687490848] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:53,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682936085] [2024-10-10 22:11:53,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:11:53,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:53,657 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 22:11:53,658 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 22:11:53,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-10 22:11:53,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:53,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:11:53,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-10 22:11:53,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-10-10 22:11:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682936085] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:54,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2024-10-10 22:11:54,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981501811] [2024-10-10 22:11:54,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:54,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 22:11:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 22:11:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-10-10 22:11:54,055 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 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 22:11:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:11:55,544 INFO L93 Difference]: Finished difference Result 559 states and 665 transitions. [2024-10-10 22:11:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-10 22:11:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 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 55 [2024-10-10 22:11:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:11:55,549 INFO L225 Difference]: With dead ends: 559 [2024-10-10 22:11:55,549 INFO L226 Difference]: Without dead ends: 475 [2024-10-10 22:11:55,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-10-10 22:11:55,553 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1558 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:11:55,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 68 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:11:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-10-10 22:11:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 201. [2024-10-10 22:11:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.315) internal successors, (263), 200 states have internal predecessors, (263), 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 22:11:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2024-10-10 22:11:55,588 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 55 [2024-10-10 22:11:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:11:55,588 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2024-10-10 22:11:55,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 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 22:11:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2024-10-10 22:11:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-10 22:11:55,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:11:55,595 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:11:55,612 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 22:11:55,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:55,797 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:11:55,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:11:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash 497599061, now seen corresponding path program 4 times [2024-10-10 22:11:55,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:11:55,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827190180] [2024-10-10 22:11:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:11:55,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:11:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:11:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-10-10 22:11:56,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:11:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827190180] [2024-10-10 22:11:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827190180] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:11:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370860122] [2024-10-10 22:11:56,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:11:56,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:11:56,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:11:56,424 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 22:11:56,426 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 22:11:56,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:11:56,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:11:56,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-10 22:11:56,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:11:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-10-10 22:11:57,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:11:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-10-10 22:11:57,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370860122] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:11:57,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:11:57,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 49 [2024-10-10 22:11:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385454979] [2024-10-10 22:11:57,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:11:57,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-10 22:11:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:11:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-10 22:11:57,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2024-10-10 22:11:57,897 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 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 22:12:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:12:04,292 INFO L93 Difference]: Finished difference Result 1572 states and 1864 transitions. [2024-10-10 22:12:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-10-10 22:12:04,292 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 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 167 [2024-10-10 22:12:04,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:12:04,297 INFO L225 Difference]: With dead ends: 1572 [2024-10-10 22:12:04,297 INFO L226 Difference]: Without dead ends: 1373 [2024-10-10 22:12:04,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16287 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=9701, Invalid=33771, Unknown=0, NotChecked=0, Total=43472 [2024-10-10 22:12:04,311 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7957 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 1474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7957 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:12:04,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7957 Valid, 538 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-10 22:12:04,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2024-10-10 22:12:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 490. [2024-10-10 22:12:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3251533742331287) internal successors, (648), 489 states have internal predecessors, (648), 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 22:12:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 648 transitions. [2024-10-10 22:12:04,374 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 648 transitions. Word has length 167 [2024-10-10 22:12:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:12:04,375 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 648 transitions. [2024-10-10 22:12:04,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0) internal successors, (147), 49 states have internal predecessors, (147), 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 22:12:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 648 transitions. [2024-10-10 22:12:04,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-10-10 22:12:04,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:12:04,386 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 132, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:12:04,403 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 22:12:04,586 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,SelfDestructingSolverStorable6 [2024-10-10 22:12:04,587 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:12:04,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:12:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 104473209, now seen corresponding path program 5 times [2024-10-10 22:12:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:12:04,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191574313] [2024-10-10 22:12:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:12:04,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:12:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:12:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 27566 trivial. 0 not checked. [2024-10-10 22:12:05,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:12:05,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191574313] [2024-10-10 22:12:05,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191574313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:12:05,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147651915] [2024-10-10 22:12:05,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:12:05,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:12:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:12:05,684 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 22:12:05,686 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 22:12:50,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 117 check-sat command(s) [2024-10-10 22:12:50,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:12:50,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 1300 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-10 22:12:50,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:12:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11927 proven. 210 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-10-10 22:12:51,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:12:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11013 proven. 1124 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-10-10 22:12:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147651915] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:12:51,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:12:51,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-10-10 22:12:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759990166] [2024-10-10 22:12:51,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:12:51,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-10 22:12:51,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:12:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-10 22:12:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-10-10 22:12:51,602 INFO L87 Difference]: Start difference. First operand 490 states and 648 transitions. Second operand has 43 states, 43 states have (on average 3.046511627906977) internal successors, (131), 42 states have internal predecessors, (131), 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 22:12:52,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:12:52,250 INFO L93 Difference]: Finished difference Result 1546 states and 2187 transitions. [2024-10-10 22:12:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-10 22:12:52,251 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.046511627906977) internal successors, (131), 42 states have internal predecessors, (131), 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 453 [2024-10-10 22:12:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:12:52,255 INFO L225 Difference]: With dead ends: 1546 [2024-10-10 22:12:52,255 INFO L226 Difference]: Without dead ends: 1058 [2024-10-10 22:12:52,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-10-10 22:12:52,258 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 556 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:12:52,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 177 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:12:52,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2024-10-10 22:12:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1008. [2024-10-10 22:12:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.3247269116186693) internal successors, (1334), 1007 states have internal predecessors, (1334), 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 22:12:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1334 transitions. [2024-10-10 22:12:52,332 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1334 transitions. Word has length 453 [2024-10-10 22:12:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:12:52,334 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1334 transitions. [2024-10-10 22:12:52,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.046511627906977) internal successors, (131), 42 states have internal predecessors, (131), 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 22:12:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1334 transitions. [2024-10-10 22:12:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2024-10-10 22:12:52,357 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:12:52,357 INFO L215 NwaCegarLoop]: trace histogram [286, 286, 286, 26, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:12:52,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-10 22:12:52,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:12:52,558 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:12:52,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:12:52,559 INFO L85 PathProgramCache]: Analyzing trace with hash 336102073, now seen corresponding path program 6 times [2024-10-10 22:12:52,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:12:52,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803414884] [2024-10-10 22:12:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:12:52,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:12:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:12:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 1 proven. 351 refuted. 0 times theorem prover too weak. 125587 trivial. 0 not checked. [2024-10-10 22:12:55,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:12:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803414884] [2024-10-10 22:12:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803414884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:12:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102398383] [2024-10-10 22:12:55,676 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 22:12:55,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:12:55,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:12:55,678 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 22:12:55,680 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 22:12:55,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-10 22:12:55,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:12:55,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 22:12:55,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:12:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-10-10 22:12:56,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:12:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-10-10 22:12:56,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102398383] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:12:56,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:12:56,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 3, 3] total 33 [2024-10-10 22:12:56,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554618082] [2024-10-10 22:12:56,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:12:56,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-10 22:12:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:12:56,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-10 22:12:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=699, Unknown=0, NotChecked=0, Total=1122 [2024-10-10 22:12:56,156 INFO L87 Difference]: Start difference. First operand 1008 states and 1334 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 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 22:13:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:00,470 INFO L93 Difference]: Finished difference Result 2219 states and 2890 transitions. [2024-10-10 22:13:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-10-10 22:13:00,471 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 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 929 [2024-10-10 22:13:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:00,475 INFO L225 Difference]: With dead ends: 2219 [2024-10-10 22:13:00,475 INFO L226 Difference]: Without dead ends: 1213 [2024-10-10 22:13:00,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2023 GetRequests, 1853 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8787, Invalid=20625, Unknown=0, NotChecked=0, Total=29412 [2024-10-10 22:13:00,480 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1093 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:00,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 150 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:13:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-10-10 22:13:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1135. [2024-10-10 22:13:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.3015873015873016) internal successors, (1476), 1134 states have internal predecessors, (1476), 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 22:13:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1476 transitions. [2024-10-10 22:13:00,577 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1476 transitions. Word has length 929 [2024-10-10 22:13:00,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:00,577 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 1476 transitions. [2024-10-10 22:13:00,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 33 states have internal predecessors, (56), 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 22:13:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1476 transitions. [2024-10-10 22:13:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2024-10-10 22:13:00,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:00,586 INFO L215 NwaCegarLoop]: trace histogram [297, 297, 297, 108, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:00,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-10 22:13:00,787 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,SelfDestructingSolverStorable8 [2024-10-10 22:13:00,787 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:00,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash -780533672, now seen corresponding path program 7 times [2024-10-10 22:13:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:00,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715192803] [2024-10-10 22:13:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:00,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-10-10 22:13:04,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:04,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715192803] [2024-10-10 22:13:04,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715192803] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:13:04,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950328519] [2024-10-10 22:13:04,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 22:13:04,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:13:04,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:13:04,089 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 22:13:04,090 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 22:13:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:04,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 3502 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-10 22:13:04,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:13:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-10-10 22:13:05,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:13:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-10-10 22:13:06,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950328519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:13:06,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:13:06,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 87 [2024-10-10 22:13:06,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205737139] [2024-10-10 22:13:06,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:13:06,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-10-10 22:13:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:13:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-10-10 22:13:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=4289, Unknown=0, NotChecked=0, Total=7656 [2024-10-10 22:13:06,304 INFO L87 Difference]: Start difference. First operand 1135 states and 1476 transitions. Second operand has 88 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 87 states have internal predecessors, (107), 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 22:13:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:08,264 INFO L93 Difference]: Finished difference Result 3510 states and 4948 transitions. [2024-10-10 22:13:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-10 22:13:08,264 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 87 states have internal predecessors, (107), 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 1053 [2024-10-10 22:13:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:08,272 INFO L225 Difference]: With dead ends: 3510 [2024-10-10 22:13:08,273 INFO L226 Difference]: Without dead ends: 2405 [2024-10-10 22:13:08,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2162 GetRequests, 2048 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4757 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5075, Invalid=8265, Unknown=0, NotChecked=0, Total=13340 [2024-10-10 22:13:08,276 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1856 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:08,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 307 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:13:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2024-10-10 22:13:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2295. [2024-10-10 22:13:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2294 states have (on average 1.3007846556233653) internal successors, (2984), 2294 states have internal predecessors, (2984), 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 22:13:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2984 transitions. [2024-10-10 22:13:08,473 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2984 transitions. Word has length 1053 [2024-10-10 22:13:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:08,473 INFO L471 AbstractCegarLoop]: Abstraction has 2295 states and 2984 transitions. [2024-10-10 22:13:08,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 87 states have internal predecessors, (107), 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 22:13:08,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2984 transitions. [2024-10-10 22:13:08,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2127 [2024-10-10 22:13:08,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:08,523 INFO L215 NwaCegarLoop]: trace histogram [616, 616, 616, 224, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:08,541 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 22:13:08,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:13:08,724 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:08,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:08,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1623364190, now seen corresponding path program 8 times [2024-10-10 22:13:08,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:08,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907431021] [2024-10-10 22:13:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:08,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat