./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c82f9f6b2ddd9cc29ac088c74e4e84d5622d389d0c95b67e6fa7eaa0a2f36f61 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 21:51:56,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 21:51:56,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 21:51:56,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 21:51:56,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 21:51:56,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 21:51:56,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 21:51:56,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 21:51:56,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 21:51:56,250 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 21:51:56,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 21:51:56,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 21:51:56,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 21:51:56,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 21:51:56,252 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 21:51:56,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 21:51:56,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 21:51:56,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 21:51:56,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 21:51:56,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 21:51:56,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 21:51:56,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 21:51:56,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 21:51:56,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 21:51:56,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 21:51:56,256 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 21:51:56,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 21:51:56,257 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 21:51:56,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 21:51:56,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 21:51:56,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 21:51:56,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 21:51:56,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:51:56,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 21:51:56,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 21:51:56,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 21:51:56,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 21:51:56,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 21:51:56,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 21:51:56,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 21:51:56,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 21:51:56,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 21:51:56,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c82f9f6b2ddd9cc29ac088c74e4e84d5622d389d0c95b67e6fa7eaa0a2f36f61 [2024-10-10 21:51:56,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 21:51:56,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 21:51:56,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 21:51:56,559 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 21:51:56,560 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 21:51:56,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i [2024-10-10 21:51:58,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 21:51:58,272 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 21:51:58,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i [2024-10-10 21:51:58,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/09bc95c01/338710fc34324b998d834bc2f3279947/FLAGb8c3b10fd [2024-10-10 21:51:58,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/09bc95c01/338710fc34324b998d834bc2f3279947 [2024-10-10 21:51:58,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 21:51:58,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 21:51:58,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 21:51:58,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 21:51:58,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 21:51:58,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:58,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b9b85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58, skipping insertion in model container [2024-10-10 21:51:58,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:58,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 21:51:58,854 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i[821,834] [2024-10-10 21:51:58,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:51:58,876 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 21:51:58,888 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i[821,834] [2024-10-10 21:51:58,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 21:51:58,912 INFO L204 MainTranslator]: Completed translation [2024-10-10 21:51:58,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58 WrapperNode [2024-10-10 21:51:58,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 21:51:58,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 21:51:58,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 21:51:58,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 21:51:58,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:58,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:58,977 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-10-10 21:51:58,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 21:51:58,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 21:51:58,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 21:51:58,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 21:51:59,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,023 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-10 21:51:59,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,040 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 21:51:59,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 21:51:59,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 21:51:59,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 21:51:59,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (1/1) ... [2024-10-10 21:51:59,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 21:51:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:51:59,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 21:51:59,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 21:51:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 21:51:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 21:51:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 21:51:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 21:51:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 21:51:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 21:51:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 21:51:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 21:51:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 21:51:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 21:51:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 21:51:59,218 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 21:51:59,221 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 21:51:59,401 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-10 21:51:59,401 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 21:51:59,441 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 21:51:59,445 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-10 21:51:59,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:51:59 BoogieIcfgContainer [2024-10-10 21:51:59,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 21:51:59,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 21:51:59,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 21:51:59,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 21:51:59,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 09:51:58" (1/3) ... [2024-10-10 21:51:59,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f78b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:51:59, skipping insertion in model container [2024-10-10 21:51:59,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 09:51:58" (2/3) ... [2024-10-10 21:51:59,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f78b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 09:51:59, skipping insertion in model container [2024-10-10 21:51:59,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 09:51:59" (3/3) ... [2024-10-10 21:51:59,456 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-1.i [2024-10-10 21:51:59,474 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 21:51:59,475 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 21:51:59,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 21:51:59,545 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;@1b5af641, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 21:51:59,545 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 21:51:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:51:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-10 21:51:59,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:51:59,557 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:51:59,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:51:59,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:51:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1193255132, now seen corresponding path program 1 times [2024-10-10 21:51:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:51:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536845056] [2024-10-10 21:51:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:51:59,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:51:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:51:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:51:59,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:51:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536845056] [2024-10-10 21:51:59,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536845056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:51:59,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 21:51:59,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 21:51:59,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238171574] [2024-10-10 21:51:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:51:59,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:51:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:51:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:51:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:51:59,817 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:51:59,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:51:59,861 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2024-10-10 21:51:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:51:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-10 21:51:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:51:59,878 INFO L225 Difference]: With dead ends: 27 [2024-10-10 21:51:59,878 INFO L226 Difference]: Without dead ends: 13 [2024-10-10 21:51:59,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 21:51:59,887 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:51:59,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:51:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-10 21:51:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-10 21:51:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:51:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-10 21:51:59,922 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2024-10-10 21:51:59,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:51:59,922 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-10 21:51:59,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:51:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-10-10 21:51:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-10 21:51:59,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:51:59,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:51:59,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 21:51:59,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:51:59,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:51:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash -179432299, now seen corresponding path program 1 times [2024-10-10 21:51:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:51:59,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137388223] [2024-10-10 21:51:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:51:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:51:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 21:52:00,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:00,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137388223] [2024-10-10 21:52:00,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137388223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:00,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090013586] [2024-10-10 21:52:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:00,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:00,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:00,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 21:52:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:00,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 21:52:00,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:00,154 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 21:52:00,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090013586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 21:52:00,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 21:52:00,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 21:52:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663120500] [2024-10-10 21:52:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 21:52:00,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 21:52:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 21:52:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:52:00,161 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:00,188 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2024-10-10 21:52:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 21:52:00,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-10 21:52:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:00,191 INFO L225 Difference]: With dead ends: 22 [2024-10-10 21:52:00,191 INFO L226 Difference]: Without dead ends: 16 [2024-10-10 21:52:00,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-10 21:52:00,194 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:00,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:00,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-10 21:52:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2024-10-10 21:52:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-10-10 21:52:00,204 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2024-10-10 21:52:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:00,205 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-10-10 21:52:00,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-10-10 21:52:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-10 21:52:00,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:00,206 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:00,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-10 21:52:00,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:00,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2081164720, now seen corresponding path program 1 times [2024-10-10 21:52:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193724249] [2024-10-10 21:52:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:00,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193724249] [2024-10-10 21:52:00,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193724249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:00,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905291657] [2024-10-10 21:52:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:00,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:00,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:00,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:00,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 21:52:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:00,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-10 21:52:00,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:00,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:00,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905291657] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:00,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:00,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-10 21:52:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051019421] [2024-10-10 21:52:00,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:00,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-10 21:52:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-10 21:52:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:52:00,620 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:00,643 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2024-10-10 21:52:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-10 21:52:00,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-10 21:52:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:00,644 INFO L225 Difference]: With dead ends: 28 [2024-10-10 21:52:00,644 INFO L226 Difference]: Without dead ends: 17 [2024-10-10 21:52:00,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-10 21:52:00,646 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:00,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-10 21:52:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-10 21:52:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-10-10 21:52:00,655 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2024-10-10 21:52:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:00,656 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-10-10 21:52:00,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-10-10 21:52:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-10 21:52:00,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:00,657 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:00,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 21:52:00,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:00,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:00,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1331881940, now seen corresponding path program 2 times [2024-10-10 21:52:00,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:00,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698498666] [2024-10-10 21:52:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:00,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-10 21:52:01,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698498666] [2024-10-10 21:52:01,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698498666] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607892371] [2024-10-10 21:52:01,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:52:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:01,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:01,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 21:52:01,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:52:01,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:01,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 21:52:01,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:01,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 21:52:01,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607892371] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:01,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:01,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2024-10-10 21:52:01,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702752631] [2024-10-10 21:52:01,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:01,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-10 21:52:01,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-10 21:52:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:52:01,253 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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 21:52:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:01,325 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-10-10 21:52:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 21:52:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) Word has length 15 [2024-10-10 21:52:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:01,327 INFO L225 Difference]: With dead ends: 39 [2024-10-10 21:52:01,327 INFO L226 Difference]: Without dead ends: 28 [2024-10-10 21:52:01,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-10 21:52:01,328 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:01,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-10 21:52:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2024-10-10 21:52:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-10-10 21:52:01,339 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 15 [2024-10-10 21:52:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:01,339 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-10-10 21:52:01,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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 21:52:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-10-10 21:52:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-10 21:52:01,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:01,340 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:01,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 21:52:01,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:01,541 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:01,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:01,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1104016071, now seen corresponding path program 3 times [2024-10-10 21:52:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041574251] [2024-10-10 21:52:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:01,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 21:52:01,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041574251] [2024-10-10 21:52:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041574251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27584856] [2024-10-10 21:52:01,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:52:01,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:01,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:01,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 21:52:01,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-10 21:52:01,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:01,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-10 21:52:01,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:52:02,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-10 21:52:02,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27584856] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:02,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:02,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2024-10-10 21:52:02,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58975675] [2024-10-10 21:52:02,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:02,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-10 21:52:02,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-10 21:52:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:52:02,081 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:02,155 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-10-10 21:52:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-10 21:52:02,156 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-10 21:52:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:02,156 INFO L225 Difference]: With dead ends: 53 [2024-10-10 21:52:02,156 INFO L226 Difference]: Without dead ends: 39 [2024-10-10 21:52:02,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-10 21:52:02,158 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:02,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-10 21:52:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-10 21:52:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-10-10 21:52:02,166 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 24 [2024-10-10 21:52:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:02,166 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-10-10 21:52:02,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-10-10 21:52:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-10 21:52:02,168 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:02,168 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:02,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-10 21:52:02,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:02,369 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:02,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1180593803, now seen corresponding path program 4 times [2024-10-10 21:52:02,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:02,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866865494] [2024-10-10 21:52:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:02,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-10 21:52:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866865494] [2024-10-10 21:52:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866865494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171751936] [2024-10-10 21:52:02,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 21:52:02,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:02,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:02,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 21:52:02,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 21:52:02,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:02,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-10 21:52:02,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 21:52:02,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-10 21:52:03,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171751936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:03,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:03,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 28 [2024-10-10 21:52:03,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267472633] [2024-10-10 21:52:03,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:03,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-10 21:52:03,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-10 21:52:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-10 21:52:03,061 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:03,175 INFO L93 Difference]: Finished difference Result 90 states and 122 transitions. [2024-10-10 21:52:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-10 21:52:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 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 37 [2024-10-10 21:52:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:03,176 INFO L225 Difference]: With dead ends: 90 [2024-10-10 21:52:03,177 INFO L226 Difference]: Without dead ends: 64 [2024-10-10 21:52:03,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-10-10 21:52:03,178 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 54 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:03,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 63 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-10 21:52:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-10 21:52:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 63 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2024-10-10 21:52:03,192 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 37 [2024-10-10 21:52:03,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:03,192 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2024-10-10 21:52:03,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2024-10-10 21:52:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-10 21:52:03,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:03,194 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:03,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 21:52:03,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:03,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:03,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash -953333895, now seen corresponding path program 5 times [2024-10-10 21:52:03,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:03,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948782266] [2024-10-10 21:52:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-10-10 21:52:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948782266] [2024-10-10 21:52:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948782266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564013465] [2024-10-10 21:52:03,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 21:52:03,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:03,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:03,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 21:52:04,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-10-10 21:52:04,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:04,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-10 21:52:04,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-10 21:52:04,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-10 21:52:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564013465] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:04,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 45 [2024-10-10 21:52:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608993871] [2024-10-10 21:52:04,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:04,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-10 21:52:04,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:04,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-10 21:52:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 21:52:04,828 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:05,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:05,007 INFO L93 Difference]: Finished difference Result 163 states and 227 transitions. [2024-10-10 21:52:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-10 21:52:05,007 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 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 62 [2024-10-10 21:52:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:05,012 INFO L225 Difference]: With dead ends: 163 [2024-10-10 21:52:05,012 INFO L226 Difference]: Without dead ends: 113 [2024-10-10 21:52:05,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 21:52:05,014 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 77 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:05,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 101 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-10 21:52:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-10-10 21:52:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 112 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2024-10-10 21:52:05,030 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 62 [2024-10-10 21:52:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:05,056 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2024-10-10 21:52:05,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.533333333333333) internal successors, (114), 45 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2024-10-10 21:52:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-10 21:52:05,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:05,061 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:05,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-10 21:52:05,262 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,SelfDestructingSolverStorable6 [2024-10-10 21:52:05,263 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:05,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash -526255243, now seen corresponding path program 6 times [2024-10-10 21:52:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340835738] [2024-10-10 21:52:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:05,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:05,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340835738] [2024-10-10 21:52:05,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340835738] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:05,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247018890] [2024-10-10 21:52:05,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-10 21:52:05,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:05,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:05,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:05,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-10 21:52:05,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-10-10 21:52:05,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:05,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-10 21:52:05,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:06,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2024-10-10 21:52:06,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247018890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:06,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 32 [2024-10-10 21:52:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014411413] [2024-10-10 21:52:06,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:06,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-10 21:52:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-10 21:52:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=586, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 21:52:06,380 INFO L87 Difference]: Start difference. First operand 113 states and 145 transitions. Second operand has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:06,437 INFO L93 Difference]: Finished difference Result 226 states and 304 transitions. [2024-10-10 21:52:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-10 21:52:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 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 111 [2024-10-10 21:52:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:06,439 INFO L225 Difference]: With dead ends: 226 [2024-10-10 21:52:06,439 INFO L226 Difference]: Without dead ends: 128 [2024-10-10 21:52:06,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=470, Invalid=586, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 21:52:06,441 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:06,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 21:52:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-10 21:52:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-10-10 21:52:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.2598425196850394) internal successors, (160), 127 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 160 transitions. [2024-10-10 21:52:06,452 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 160 transitions. Word has length 111 [2024-10-10 21:52:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:06,452 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 160 transitions. [2024-10-10 21:52:06,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 160 transitions. [2024-10-10 21:52:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-10 21:52:06,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:06,455 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:06,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-10 21:52:06,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:06,656 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:06,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1398571911, now seen corresponding path program 7 times [2024-10-10 21:52:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206926702] [2024-10-10 21:52:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:06,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206926702] [2024-10-10 21:52:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206926702] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768214160] [2024-10-10 21:52:07,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-10 21:52:07,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:07,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:07,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-10 21:52:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:07,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-10 21:52:07,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:07,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768214160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:08,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 60 [2024-10-10 21:52:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153522442] [2024-10-10 21:52:08,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:08,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-10-10 21:52:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-10-10 21:52:08,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 21:52:09,000 INFO L87 Difference]: Start difference. First operand 128 states and 160 transitions. Second operand has 61 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:09,075 INFO L93 Difference]: Finished difference Result 256 states and 349 transitions. [2024-10-10 21:52:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-10 21:52:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-10-10 21:52:09,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:09,077 INFO L225 Difference]: With dead ends: 256 [2024-10-10 21:52:09,077 INFO L226 Difference]: Without dead ends: 158 [2024-10-10 21:52:09,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-10-10 21:52:09,083 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:09,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-10 21:52:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-10-10 21:52:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 157 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 190 transitions. [2024-10-10 21:52:09,104 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 190 transitions. Word has length 126 [2024-10-10 21:52:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:09,104 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 190 transitions. [2024-10-10 21:52:09,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 190 transitions. [2024-10-10 21:52:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-10 21:52:09,106 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:09,107 INFO L215 NwaCegarLoop]: trace histogram [58, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:09,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-10 21:52:09,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:09,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2053387513, now seen corresponding path program 8 times [2024-10-10 21:52:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398443830] [2024-10-10 21:52:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3046 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398443830] [2024-10-10 21:52:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398443830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265413956] [2024-10-10 21:52:12,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 21:52:12,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:12,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:12,427 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:12,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-10 21:52:12,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 21:52:12,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 21:52:12,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-10 21:52:12,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 21:52:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3046 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:12,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 21:52:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3046 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:16,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265413956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 21:52:16,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 21:52:16,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 120 [2024-10-10 21:52:16,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927775639] [2024-10-10 21:52:16,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 21:52:16,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2024-10-10 21:52:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 21:52:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2024-10-10 21:52:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2024-10-10 21:52:16,236 INFO L87 Difference]: Start difference. First operand 158 states and 190 transitions. Second operand has 121 states, 121 states have (on average 1.0826446280991735) internal successors, (131), 120 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 21:52:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 21:52:16,386 INFO L93 Difference]: Finished difference Result 316 states and 439 transitions. [2024-10-10 21:52:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-10-10 21:52:16,387 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 1.0826446280991735) internal successors, (131), 120 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 156 [2024-10-10 21:52:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 21:52:16,388 INFO L225 Difference]: With dead ends: 316 [2024-10-10 21:52:16,388 INFO L226 Difference]: Without dead ends: 218 [2024-10-10 21:52:16,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2024-10-10 21:52:16,393 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 21:52:16,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 21:52:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-10 21:52:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-10-10 21:52:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.152073732718894) internal successors, (250), 217 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 21:52:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 250 transitions. [2024-10-10 21:52:16,405 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 250 transitions. Word has length 156 [2024-10-10 21:52:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 21:52:16,405 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 250 transitions. [2024-10-10 21:52:16,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 1.0826446280991735) internal successors, (131), 120 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 21:52:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 250 transitions. [2024-10-10 21:52:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-10 21:52:16,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 21:52:16,408 INFO L215 NwaCegarLoop]: trace histogram [118, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 21:52:16,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-10 21:52:16,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:16,613 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 21:52:16,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 21:52:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -261880327, now seen corresponding path program 9 times [2024-10-10 21:52:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 21:52:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748354200] [2024-10-10 21:52:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 21:52:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 21:52:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 21:52:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8356 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-10-10 21:52:25,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 21:52:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748354200] [2024-10-10 21:52:25,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748354200] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 21:52:25,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65524519] [2024-10-10 21:52:25,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 21:52:25,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 21:52:25,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 21:52:25,305 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 21:52:25,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process