./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label11.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 698befc2b2b3848a03ec5b9664ba6dadb47a33cbe123de396a3ce9bbb5d1873c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:28:41,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:28:41,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:28:41,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:28:41,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:28:41,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:28:41,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:28:41,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:28:41,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:28:41,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:28:41,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:28:41,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:28:41,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:28:41,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:28:41,550 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:28:41,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:28:41,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:28:41,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:28:41,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:28:41,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:28:41,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:28:41,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:28:41,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:28:41,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:28:41,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:28:41,554 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:28:41,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:28:41,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:28:41,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:28:41,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:28:41,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:28:41,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:28:41,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:28:41,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:28:41,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:28:41,556 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:28:41,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:28:41,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:28:41,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:28:41,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:28:41,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:28:41,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:28:41,559 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 698befc2b2b3848a03ec5b9664ba6dadb47a33cbe123de396a3ce9bbb5d1873c [2024-11-08 10:28:41,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:28:41,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:28:41,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:28:41,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:28:41,840 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:28:41,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label11.c [2024-11-08 10:28:43,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:28:43,346 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:28:43,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label11.c [2024-11-08 10:28:43,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532a7b5c4/3d895ee9ab4c42499229466ffd8059f7/FLAG5a60db186 [2024-11-08 10:28:43,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532a7b5c4/3d895ee9ab4c42499229466ffd8059f7 [2024-11-08 10:28:43,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:28:43,381 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:28:43,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:28:43,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:28:43,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:28:43,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:28:43" (1/1) ... [2024-11-08 10:28:43,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65809d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:43, skipping insertion in model container [2024-11-08 10:28:43,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:28:43" (1/1) ... [2024-11-08 10:28:43,437 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:28:43,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label11.c[60283,60296] [2024-11-08 10:28:43,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:28:43,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:28:43,994 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label11.c[60283,60296] [2024-11-08 10:28:44,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:28:44,018 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:28:44,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44 WrapperNode [2024-11-08 10:28:44,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:28:44,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:28:44,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:28:44,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:28:44,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,140 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-08 10:28:44,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:28:44,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:28:44,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:28:44,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:28:44,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,195 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 10:28:44,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:28:44,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:28:44,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:28:44,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:28:44,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (1/1) ... [2024-11-08 10:28:44,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:28:44,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:44,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:28:44,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:28:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:28:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:28:44,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:28:44,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:28:44,494 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:28:44,496 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:28:45,868 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-08 10:28:45,869 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:28:45,885 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:28:45,885 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 10:28:45,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:28:45 BoogieIcfgContainer [2024-11-08 10:28:45,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:28:45,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:28:45,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:28:45,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:28:45,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:28:43" (1/3) ... [2024-11-08 10:28:45,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2587f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:28:45, skipping insertion in model container [2024-11-08 10:28:45,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:28:44" (2/3) ... [2024-11-08 10:28:45,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2587f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:28:45, skipping insertion in model container [2024-11-08 10:28:45,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:28:45" (3/3) ... [2024-11-08 10:28:45,891 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label11.c [2024-11-08 10:28:45,903 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:28:45,903 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:28:45,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:28:45,988 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;@430ba127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:28:45,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:28:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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) [2024-11-08 10:28:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 10:28:46,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:46,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:46,021 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:46,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:46,029 INFO L85 PathProgramCache]: Analyzing trace with hash -448621317, now seen corresponding path program 1 times [2024-11-08 10:28:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:46,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532885850] [2024-11-08 10:28:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:46,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:46,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532885850] [2024-11-08 10:28:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532885850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:46,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:46,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476409689] [2024-11-08 10:28:46,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:46,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:46,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:46,937 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2024-11-08 10:28:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:47,801 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2024-11-08 10:28:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 193 [2024-11-08 10:28:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:47,816 INFO L225 Difference]: With dead ends: 810 [2024-11-08 10:28:47,816 INFO L226 Difference]: Without dead ends: 444 [2024-11-08 10:28:47,820 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 [2024-11-08 10:28:47,823 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 61 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:47,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 10:28:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-08 10:28:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-08 10:28:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 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) [2024-11-08 10:28:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2024-11-08 10:28:47,882 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 193 [2024-11-08 10:28:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:47,883 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2024-11-08 10:28:47,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2024-11-08 10:28:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2024-11-08 10:28:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-08 10:28:47,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:47,891 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:47,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:28:47,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:47,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1711270716, now seen corresponding path program 1 times [2024-11-08 10:28:47,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959956297] [2024-11-08 10:28:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:48,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959956297] [2024-11-08 10:28:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959956297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:48,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423990215] [2024-11-08 10:28:48,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:48,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:48,136 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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) [2024-11-08 10:28:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:49,022 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2024-11-08 10:28:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 201 [2024-11-08 10:28:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:49,027 INFO L225 Difference]: With dead ends: 1312 [2024-11-08 10:28:49,028 INFO L226 Difference]: Without dead ends: 870 [2024-11-08 10:28:49,029 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 [2024-11-08 10:28:49,030 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:49,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 10:28:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-08 10:28:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2024-11-08 10:28:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 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) [2024-11-08 10:28:49,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2024-11-08 10:28:49,068 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 201 [2024-11-08 10:28:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:49,069 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2024-11-08 10:28:49,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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) [2024-11-08 10:28:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2024-11-08 10:28:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-08 10:28:49,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:49,074 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:49,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:28:49,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:49,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2070037263, now seen corresponding path program 1 times [2024-11-08 10:28:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7227514] [2024-11-08 10:28:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:49,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:49,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:49,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7227514] [2024-11-08 10:28:49,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7227514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:49,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:49,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787713720] [2024-11-08 10:28:49,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:49,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:28:49,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:28:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:49,707 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-11-08 10:28:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:50,546 INFO L93 Difference]: Finished difference Result 1864 states and 2652 transitions. [2024-11-08 10:28:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:28:50,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 208 [2024-11-08 10:28:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:50,549 INFO L225 Difference]: With dead ends: 1864 [2024-11-08 10:28:50,549 INFO L226 Difference]: Without dead ends: 836 [2024-11-08 10:28:50,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:50,552 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 330 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:50,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 47 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 10:28:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-08 10:28:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 836. [2024-11-08 10:28:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.2658682634730538) internal successors, (1057), 835 states have internal predecessors, (1057), 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) [2024-11-08 10:28:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1057 transitions. [2024-11-08 10:28:50,569 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1057 transitions. Word has length 208 [2024-11-08 10:28:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:50,569 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1057 transitions. [2024-11-08 10:28:50,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-11-08 10:28:50,569 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1057 transitions. [2024-11-08 10:28:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-08 10:28:50,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:50,571 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:50,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 10:28:50,572 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:50,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2139349419, now seen corresponding path program 1 times [2024-11-08 10:28:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743056904] [2024-11-08 10:28:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:50,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743056904] [2024-11-08 10:28:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743056904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:50,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:50,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:28:50,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770913466] [2024-11-08 10:28:50,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:50,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:50,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:50,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:28:50,811 INFO L87 Difference]: Start difference. First operand 836 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2024-11-08 10:28:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:51,449 INFO L93 Difference]: Finished difference Result 2089 states and 2637 transitions. [2024-11-08 10:28:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:51,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 221 [2024-11-08 10:28:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:51,453 INFO L225 Difference]: With dead ends: 2089 [2024-11-08 10:28:51,453 INFO L226 Difference]: Without dead ends: 1255 [2024-11-08 10:28:51,454 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 [2024-11-08 10:28:51,455 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:51,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:28:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-08 10:28:51,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1252. [2024-11-08 10:28:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.258193445243805) internal successors, (1574), 1251 states have internal predecessors, (1574), 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) [2024-11-08 10:28:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1574 transitions. [2024-11-08 10:28:51,473 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1574 transitions. Word has length 221 [2024-11-08 10:28:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:51,473 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1574 transitions. [2024-11-08 10:28:51,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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) [2024-11-08 10:28:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1574 transitions. [2024-11-08 10:28:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-08 10:28:51,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:51,476 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:51,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 10:28:51,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:51,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1439953932, now seen corresponding path program 1 times [2024-11-08 10:28:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819845357] [2024-11-08 10:28:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:52,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819845357] [2024-11-08 10:28:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819845357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:52,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:28:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:28:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612847280] [2024-11-08 10:28:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:52,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:28:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:28:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:52,018 INFO L87 Difference]: Start difference. First operand 1252 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-11-08 10:28:53,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:53,133 INFO L93 Difference]: Finished difference Result 3675 states and 4685 transitions. [2024-11-08 10:28:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:28:53,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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 224 [2024-11-08 10:28:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:53,139 INFO L225 Difference]: With dead ends: 3675 [2024-11-08 10:28:53,139 INFO L226 Difference]: Without dead ends: 2077 [2024-11-08 10:28:53,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:28:53,143 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 193 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:53,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 149 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 10:28:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-08 10:28:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2076. [2024-11-08 10:28:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.2448192771084337) internal successors, (2583), 2075 states have internal predecessors, (2583), 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) [2024-11-08 10:28:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2583 transitions. [2024-11-08 10:28:53,170 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2583 transitions. Word has length 224 [2024-11-08 10:28:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:53,171 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2583 transitions. [2024-11-08 10:28:53,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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) [2024-11-08 10:28:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2583 transitions. [2024-11-08 10:28:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-08 10:28:53,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:53,175 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:53,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 10:28:53,175 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:53,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash -148044918, now seen corresponding path program 1 times [2024-11-08 10:28:53,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:53,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139086373] [2024-11-08 10:28:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:53,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139086373] [2024-11-08 10:28:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139086373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924418863] [2024-11-08 10:28:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:53,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:53,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:53,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:53,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:28:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:53,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:28:53,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:53,814 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 10:28:53,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:53,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924418863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:53,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-08 10:28:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653279625] [2024-11-08 10:28:53,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:53,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:53,817 INFO L87 Difference]: Start difference. First operand 2076 states and 2583 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-11-08 10:28:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:54,339 INFO L93 Difference]: Finished difference Result 6203 states and 7723 transitions. [2024-11-08 10:28:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 228 [2024-11-08 10:28:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:54,351 INFO L225 Difference]: With dead ends: 6203 [2024-11-08 10:28:54,351 INFO L226 Difference]: Without dead ends: 4129 [2024-11-08 10:28:54,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:54,353 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 56 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:54,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 73 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:28:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2024-11-08 10:28:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 4127. [2024-11-08 10:28:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 4126 states have (on average 1.2186136694134755) internal successors, (5028), 4126 states have internal predecessors, (5028), 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) [2024-11-08 10:28:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 5028 transitions. [2024-11-08 10:28:54,397 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 5028 transitions. Word has length 228 [2024-11-08 10:28:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:54,397 INFO L471 AbstractCegarLoop]: Abstraction has 4127 states and 5028 transitions. [2024-11-08 10:28:54,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-11-08 10:28:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 5028 transitions. [2024-11-08 10:28:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-08 10:28:54,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:54,402 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:54,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:28:54,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 10:28:54,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:54,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1990916425, now seen corresponding path program 1 times [2024-11-08 10:28:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:54,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976524213] [2024-11-08 10:28:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:28:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976524213] [2024-11-08 10:28:54,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976524213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023531890] [2024-11-08 10:28:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:54,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:54,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:54,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:54,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:28:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:55,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:28:55,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:28:55,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:55,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023531890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:55,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527184552] [2024-11-08 10:28:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:55,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:55,247 INFO L87 Difference]: Start difference. First operand 4127 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2024-11-08 10:28:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:55,844 INFO L93 Difference]: Finished difference Result 8261 states and 10070 transitions. [2024-11-08 10:28:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 231 [2024-11-08 10:28:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:55,853 INFO L225 Difference]: With dead ends: 8261 [2024-11-08 10:28:55,853 INFO L226 Difference]: Without dead ends: 4136 [2024-11-08 10:28:55,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:55,858 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 31 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:55,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 329 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:28:55,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2024-11-08 10:28:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 4127. [2024-11-08 10:28:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 4126 states have (on average 1.2108579738245273) internal successors, (4996), 4126 states have internal predecessors, (4996), 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) [2024-11-08 10:28:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 4996 transitions. [2024-11-08 10:28:55,901 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 4996 transitions. Word has length 231 [2024-11-08 10:28:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:55,901 INFO L471 AbstractCegarLoop]: Abstraction has 4127 states and 4996 transitions. [2024-11-08 10:28:55,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2024-11-08 10:28:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 4996 transitions. [2024-11-08 10:28:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-08 10:28:55,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:55,906 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:55,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:28:56,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 10:28:56,107 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:56,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1872386861, now seen corresponding path program 1 times [2024-11-08 10:28:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636617104] [2024-11-08 10:28:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636617104] [2024-11-08 10:28:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636617104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862791625] [2024-11-08 10:28:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:56,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:56,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:56,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:56,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:28:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:56,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:28:56,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:56,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862791625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:56,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:56,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694728294] [2024-11-08 10:28:56,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:56,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:56,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:56,716 INFO L87 Difference]: Start difference. First operand 4127 states and 4996 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-11-08 10:28:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:57,358 INFO L93 Difference]: Finished difference Result 10288 states and 12718 transitions. [2024-11-08 10:28:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:57,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 237 [2024-11-08 10:28:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:57,373 INFO L225 Difference]: With dead ends: 10288 [2024-11-08 10:28:57,373 INFO L226 Difference]: Without dead ends: 6163 [2024-11-08 10:28:57,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:57,381 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 213 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:57,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 335 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:28:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2024-11-08 10:28:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 6157. [2024-11-08 10:28:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6157 states, 6156 states have (on average 1.166341780376868) internal successors, (7180), 6156 states have internal predecessors, (7180), 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) [2024-11-08 10:28:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 7180 transitions. [2024-11-08 10:28:57,454 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 7180 transitions. Word has length 237 [2024-11-08 10:28:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:57,455 INFO L471 AbstractCegarLoop]: Abstraction has 6157 states and 7180 transitions. [2024-11-08 10:28:57,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2024-11-08 10:28:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 7180 transitions. [2024-11-08 10:28:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-08 10:28:57,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:57,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:57,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:28:57,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:57,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:57,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash -803807727, now seen corresponding path program 1 times [2024-11-08 10:28:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452261700] [2024-11-08 10:28:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 10:28:58,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:58,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452261700] [2024-11-08 10:28:58,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452261700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:58,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776822230] [2024-11-08 10:28:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:58,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:58,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:58,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:58,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:28:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:58,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:28:58,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:28:58,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:58,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776822230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:58,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:58,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855177891] [2024-11-08 10:28:58,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:58,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:58,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:58,170 INFO L87 Difference]: Start difference. First operand 6157 states and 7180 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-08 10:28:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:28:58,767 INFO L93 Difference]: Finished difference Result 18416 states and 21466 transitions. [2024-11-08 10:28:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:28:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 259 [2024-11-08 10:28:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:28:58,807 INFO L225 Difference]: With dead ends: 18416 [2024-11-08 10:28:58,808 INFO L226 Difference]: Without dead ends: 12261 [2024-11-08 10:28:58,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:58,815 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:28:58,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 298 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:28:58,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12261 states. [2024-11-08 10:28:58,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12261 to 12255. [2024-11-08 10:28:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12255 states, 12254 states have (on average 1.1326097600783418) internal successors, (13879), 12254 states have internal predecessors, (13879), 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) [2024-11-08 10:28:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 13879 transitions. [2024-11-08 10:28:59,004 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 13879 transitions. Word has length 259 [2024-11-08 10:28:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:28:59,005 INFO L471 AbstractCegarLoop]: Abstraction has 12255 states and 13879 transitions. [2024-11-08 10:28:59,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2024-11-08 10:28:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 13879 transitions. [2024-11-08 10:28:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-08 10:28:59,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:28:59,025 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:28:59,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 10:28:59,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:59,226 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:28:59,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:28:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash -487881760, now seen corresponding path program 1 times [2024-11-08 10:28:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:28:59,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838402345] [2024-11-08 10:28:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:59,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:28:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 10:28:59,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:28:59,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838402345] [2024-11-08 10:28:59,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838402345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:28:59,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075177052] [2024-11-08 10:28:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:28:59,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:28:59,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:28:59,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:28:59,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:28:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:28:59,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:28:59,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:28:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 10:28:59,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:28:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075177052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:28:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:28:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:28:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166244289] [2024-11-08 10:28:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:28:59,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:28:59,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:28:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:28:59,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:28:59,898 INFO L87 Difference]: Start difference. First operand 12255 states and 13879 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2024-11-08 10:29:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:00,437 INFO L93 Difference]: Finished difference Result 35298 states and 39913 transitions. [2024-11-08 10:29:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:00,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 265 [2024-11-08 10:29:00,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:00,464 INFO L225 Difference]: With dead ends: 35298 [2024-11-08 10:29:00,464 INFO L226 Difference]: Without dead ends: 23045 [2024-11-08 10:29:00,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:00,477 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:00,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 126 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23045 states. [2024-11-08 10:29:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23045 to 17334. [2024-11-08 10:29:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17334 states, 17333 states have (on average 1.13904113540645) internal successors, (19743), 17333 states have internal predecessors, (19743), 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) [2024-11-08 10:29:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17334 states to 17334 states and 19743 transitions. [2024-11-08 10:29:00,834 INFO L78 Accepts]: Start accepts. Automaton has 17334 states and 19743 transitions. Word has length 265 [2024-11-08 10:29:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:00,835 INFO L471 AbstractCegarLoop]: Abstraction has 17334 states and 19743 transitions. [2024-11-08 10:29:00,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2024-11-08 10:29:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 17334 states and 19743 transitions. [2024-11-08 10:29:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-08 10:29:00,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:00,853 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:00,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:29:01,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 10:29:01,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:01,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1679373273, now seen corresponding path program 1 times [2024-11-08 10:29:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:01,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895543268] [2024-11-08 10:29:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:01,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:29:01,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:01,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895543268] [2024-11-08 10:29:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895543268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:01,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:29:01,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208144750] [2024-11-08 10:29:01,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:01,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:01,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:01,214 INFO L87 Difference]: Start difference. First operand 17334 states and 19743 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2024-11-08 10:29:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:01,766 INFO L93 Difference]: Finished difference Result 33836 states and 38545 transitions. [2024-11-08 10:29:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:01,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 304 [2024-11-08 10:29:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:01,789 INFO L225 Difference]: With dead ends: 33836 [2024-11-08 10:29:01,789 INFO L226 Difference]: Without dead ends: 16504 [2024-11-08 10:29:01,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:01,805 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 228 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:01,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 314 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16504 states. [2024-11-08 10:29:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16504 to 15689. [2024-11-08 10:29:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15689 states, 15688 states have (on average 1.108299337072922) internal successors, (17387), 15688 states have internal predecessors, (17387), 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) [2024-11-08 10:29:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15689 states to 15689 states and 17387 transitions. [2024-11-08 10:29:02,091 INFO L78 Accepts]: Start accepts. Automaton has 15689 states and 17387 transitions. Word has length 304 [2024-11-08 10:29:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:02,091 INFO L471 AbstractCegarLoop]: Abstraction has 15689 states and 17387 transitions. [2024-11-08 10:29:02,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2024-11-08 10:29:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 15689 states and 17387 transitions. [2024-11-08 10:29:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-08 10:29:02,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:02,113 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:02,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 10:29:02,113 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:02,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash -241061467, now seen corresponding path program 1 times [2024-11-08 10:29:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:02,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919172858] [2024-11-08 10:29:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:02,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 10:29:02,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:02,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919172858] [2024-11-08 10:29:02,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919172858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:02,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:02,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:29:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878957530] [2024-11-08 10:29:02,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:02,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:29:02,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:29:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:02,479 INFO L87 Difference]: Start difference. First operand 15689 states and 17387 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:03,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:03,339 INFO L93 Difference]: Finished difference Result 38094 states and 42237 transitions. [2024-11-08 10:29:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:29:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-11-08 10:29:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:03,362 INFO L225 Difference]: With dead ends: 38094 [2024-11-08 10:29:03,362 INFO L226 Difference]: Without dead ends: 22407 [2024-11-08 10:29:03,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:03,376 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 336 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:03,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 85 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 10:29:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22407 states. [2024-11-08 10:29:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22407 to 21994. [2024-11-08 10:29:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21994 states, 21993 states have (on average 1.095393988996499) internal successors, (24091), 21993 states have internal predecessors, (24091), 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) [2024-11-08 10:29:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21994 states to 21994 states and 24091 transitions. [2024-11-08 10:29:03,704 INFO L78 Accepts]: Start accepts. Automaton has 21994 states and 24091 transitions. Word has length 310 [2024-11-08 10:29:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:03,705 INFO L471 AbstractCegarLoop]: Abstraction has 21994 states and 24091 transitions. [2024-11-08 10:29:03,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 21994 states and 24091 transitions. [2024-11-08 10:29:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-08 10:29:03,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:03,729 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:03,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 10:29:03,729 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:03,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash -239268045, now seen corresponding path program 1 times [2024-11-08 10:29:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918324830] [2024-11-08 10:29:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 10:29:03,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:03,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918324830] [2024-11-08 10:29:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918324830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:03,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660607864] [2024-11-08 10:29:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:03,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:04,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:29:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:04,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:29:04,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-08 10:29:04,326 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:29:04,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660607864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:04,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:29:04,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:29:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500008713] [2024-11-08 10:29:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:04,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:04,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:04,328 INFO L87 Difference]: Start difference. First operand 21994 states and 24091 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2024-11-08 10:29:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:04,860 INFO L93 Difference]: Finished difference Result 43991 states and 48187 transitions. [2024-11-08 10:29:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 322 [2024-11-08 10:29:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:04,882 INFO L225 Difference]: With dead ends: 43991 [2024-11-08 10:29:04,882 INFO L226 Difference]: Without dead ends: 21999 [2024-11-08 10:29:04,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:04,896 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 66 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:04,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 277 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:29:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21999 states. [2024-11-08 10:29:05,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21999 to 21791. [2024-11-08 10:29:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21791 states, 21790 states have (on average 1.0905002294630564) internal successors, (23762), 21790 states have internal predecessors, (23762), 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) [2024-11-08 10:29:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21791 states to 21791 states and 23762 transitions. [2024-11-08 10:29:05,256 INFO L78 Accepts]: Start accepts. Automaton has 21791 states and 23762 transitions. Word has length 322 [2024-11-08 10:29:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:05,257 INFO L471 AbstractCegarLoop]: Abstraction has 21791 states and 23762 transitions. [2024-11-08 10:29:05,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2024-11-08 10:29:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 21791 states and 23762 transitions. [2024-11-08 10:29:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-08 10:29:05,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:05,277 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:05,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:29:05,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:05,479 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:05,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -131180096, now seen corresponding path program 1 times [2024-11-08 10:29:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069404432] [2024-11-08 10:29:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:05,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-08 10:29:05,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069404432] [2024-11-08 10:29:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069404432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46932850] [2024-11-08 10:29:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:05,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:05,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:05,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:29:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:06,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:29:06,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:29:06,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:29:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 145 proven. 37 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:29:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46932850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:29:06,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:29:06,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-08 10:29:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431367608] [2024-11-08 10:29:06,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:29:06,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 10:29:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 10:29:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:29:06,563 INFO L87 Difference]: Start difference. First operand 21791 states and 23762 transitions. Second operand has 6 states, 6 states have (on average 62.333333333333336) internal successors, (374), 5 states have internal predecessors, (374), 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) [2024-11-08 10:29:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:08,515 INFO L93 Difference]: Finished difference Result 74135 states and 81147 transitions. [2024-11-08 10:29:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:29:08,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 62.333333333333336) internal successors, (374), 5 states have internal predecessors, (374), 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 339 [2024-11-08 10:29:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:08,567 INFO L225 Difference]: With dead ends: 74135 [2024-11-08 10:29:08,567 INFO L226 Difference]: Without dead ends: 52346 [2024-11-08 10:29:08,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:29:08,590 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1903 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:08,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 159 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 10:29:08,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52346 states. [2024-11-08 10:29:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52346 to 51709. [2024-11-08 10:29:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51709 states, 51708 states have (on average 1.0813026997756634) internal successors, (55912), 51708 states have internal predecessors, (55912), 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) [2024-11-08 10:29:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51709 states to 51709 states and 55912 transitions. [2024-11-08 10:29:09,217 INFO L78 Accepts]: Start accepts. Automaton has 51709 states and 55912 transitions. Word has length 339 [2024-11-08 10:29:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:09,218 INFO L471 AbstractCegarLoop]: Abstraction has 51709 states and 55912 transitions. [2024-11-08 10:29:09,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.333333333333336) internal successors, (374), 5 states have internal predecessors, (374), 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) [2024-11-08 10:29:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 51709 states and 55912 transitions. [2024-11-08 10:29:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-08 10:29:09,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:09,260 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:09,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:29:09,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:09,461 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:09,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash 587133305, now seen corresponding path program 1 times [2024-11-08 10:29:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:09,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774826681] [2024-11-08 10:29:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-08 10:29:09,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:09,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774826681] [2024-11-08 10:29:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774826681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:09,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:09,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:29:09,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441709693] [2024-11-08 10:29:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:09,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:09,976 INFO L87 Difference]: Start difference. First operand 51709 states and 55912 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 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) [2024-11-08 10:29:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:10,573 INFO L93 Difference]: Finished difference Result 154712 states and 167301 transitions. [2024-11-08 10:29:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 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 424 [2024-11-08 10:29:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:10,702 INFO L225 Difference]: With dead ends: 154712 [2024-11-08 10:29:10,703 INFO L226 Difference]: Without dead ends: 103005 [2024-11-08 10:29:10,864 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 [2024-11-08 10:29:10,865 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 185 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:10,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 487 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:29:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103005 states. [2024-11-08 10:29:12,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103005 to 103000. [2024-11-08 10:29:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103000 states, 102999 states have (on average 1.0810202040796513) internal successors, (111344), 102999 states have internal predecessors, (111344), 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) [2024-11-08 10:29:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103000 states to 103000 states and 111344 transitions. [2024-11-08 10:29:12,411 INFO L78 Accepts]: Start accepts. Automaton has 103000 states and 111344 transitions. Word has length 424 [2024-11-08 10:29:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:12,411 INFO L471 AbstractCegarLoop]: Abstraction has 103000 states and 111344 transitions. [2024-11-08 10:29:12,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 2 states have internal predecessors, (320), 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) [2024-11-08 10:29:12,412 INFO L276 IsEmpty]: Start isEmpty. Operand 103000 states and 111344 transitions. [2024-11-08 10:29:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-08 10:29:12,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:12,465 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:12,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 10:29:12,466 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:12,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1542221143, now seen corresponding path program 1 times [2024-11-08 10:29:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125480117] [2024-11-08 10:29:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:12,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2024-11-08 10:29:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125480117] [2024-11-08 10:29:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125480117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:29:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046884138] [2024-11-08 10:29:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:12,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:12,904 INFO L87 Difference]: Start difference. First operand 103000 states and 111344 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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) [2024-11-08 10:29:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:13,895 INFO L93 Difference]: Finished difference Result 204372 states and 220880 transitions. [2024-11-08 10:29:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:13,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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 451 [2024-11-08 10:29:13,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:14,032 INFO L225 Difference]: With dead ends: 204372 [2024-11-08 10:29:14,032 INFO L226 Difference]: Without dead ends: 101374 [2024-11-08 10:29:14,084 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 [2024-11-08 10:29:14,085 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 164 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:14,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 102 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:29:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101374 states. [2024-11-08 10:29:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101374 to 100142. [2024-11-08 10:29:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100142 states, 100141 states have (on average 1.0689727484247211) internal successors, (107048), 100141 states have internal predecessors, (107048), 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) [2024-11-08 10:29:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100142 states to 100142 states and 107048 transitions. [2024-11-08 10:29:15,749 INFO L78 Accepts]: Start accepts. Automaton has 100142 states and 107048 transitions. Word has length 451 [2024-11-08 10:29:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:15,749 INFO L471 AbstractCegarLoop]: Abstraction has 100142 states and 107048 transitions. [2024-11-08 10:29:15,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 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) [2024-11-08 10:29:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 100142 states and 107048 transitions. [2024-11-08 10:29:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-08 10:29:15,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:15,792 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:15,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 10:29:15,792 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:15,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1264429138, now seen corresponding path program 1 times [2024-11-08 10:29:15,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:15,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90257331] [2024-11-08 10:29:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:15,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-11-08 10:29:16,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:16,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90257331] [2024-11-08 10:29:16,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90257331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:16,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:16,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:29:16,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369326933] [2024-11-08 10:29:16,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:16,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:29:16,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:16,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:29:16,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:16,346 INFO L87 Difference]: Start difference. First operand 100142 states and 107048 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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) [2024-11-08 10:29:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:17,667 INFO L93 Difference]: Finished difference Result 289302 states and 308519 transitions. [2024-11-08 10:29:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:29:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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 460 [2024-11-08 10:29:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:18,070 INFO L225 Difference]: With dead ends: 289302 [2024-11-08 10:29:18,071 INFO L226 Difference]: Without dead ends: 189162 [2024-11-08 10:29:18,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:29:18,104 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 488 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:18,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 301 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:29:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189162 states. [2024-11-08 10:29:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189162 to 187118. [2024-11-08 10:29:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187118 states, 187117 states have (on average 1.0648952259816051) internal successors, (199260), 187117 states have internal predecessors, (199260), 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) [2024-11-08 10:29:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187118 states to 187118 states and 199260 transitions. [2024-11-08 10:29:21,116 INFO L78 Accepts]: Start accepts. Automaton has 187118 states and 199260 transitions. Word has length 460 [2024-11-08 10:29:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:21,116 INFO L471 AbstractCegarLoop]: Abstraction has 187118 states and 199260 transitions. [2024-11-08 10:29:21,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 3 states have internal predecessors, (238), 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) [2024-11-08 10:29:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 187118 states and 199260 transitions. [2024-11-08 10:29:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-08 10:29:21,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:21,209 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:21,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 10:29:21,209 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:21,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash -367048251, now seen corresponding path program 1 times [2024-11-08 10:29:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:21,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044760323] [2024-11-08 10:29:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-08 10:29:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044760323] [2024-11-08 10:29:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044760323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:29:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755252985] [2024-11-08 10:29:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:22,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:29:22,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:29:22,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:29:22,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:29:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:22,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:29:22,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:29:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 480 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-08 10:29:22,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:29:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755252985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:22,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:29:22,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 10:29:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623780517] [2024-11-08 10:29:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:22,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:22,498 INFO L87 Difference]: Start difference. First operand 187118 states and 199260 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2024-11-08 10:29:24,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:24,187 INFO L93 Difference]: Finished difference Result 385435 states and 410714 transitions. [2024-11-08 10:29:24,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:24,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 488 [2024-11-08 10:29:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:24,556 INFO L225 Difference]: With dead ends: 385435 [2024-11-08 10:29:24,557 INFO L226 Difference]: Without dead ends: 198522 [2024-11-08 10:29:24,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:29:24,686 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 164 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:24,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 306 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 10:29:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198522 states. [2024-11-08 10:29:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198522 to 196468. [2024-11-08 10:29:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196468 states, 196467 states have (on average 1.0647996864613396) internal successors, (209198), 196467 states have internal predecessors, (209198), 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) [2024-11-08 10:29:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196468 states to 196468 states and 209198 transitions. [2024-11-08 10:29:27,849 INFO L78 Accepts]: Start accepts. Automaton has 196468 states and 209198 transitions. Word has length 488 [2024-11-08 10:29:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:27,850 INFO L471 AbstractCegarLoop]: Abstraction has 196468 states and 209198 transitions. [2024-11-08 10:29:27,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2024-11-08 10:29:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 196468 states and 209198 transitions. [2024-11-08 10:29:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-08 10:29:27,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:27,925 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:27,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 10:29:28,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 10:29:28,127 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:28,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1318595598, now seen corresponding path program 1 times [2024-11-08 10:29:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:28,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739770292] [2024-11-08 10:29:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-08 10:29:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739770292] [2024-11-08 10:29:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739770292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:28,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:28,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:29:28,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684022008] [2024-11-08 10:29:28,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:28,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:28,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:28,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:28,415 INFO L87 Difference]: Start difference. First operand 196468 states and 209198 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:30,788 INFO L93 Difference]: Finished difference Result 555607 states and 592180 transitions. [2024-11-08 10:29:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:30,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2024-11-08 10:29:30,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:31,436 INFO L225 Difference]: With dead ends: 555607 [2024-11-08 10:29:31,436 INFO L226 Difference]: Without dead ends: 359344 [2024-11-08 10:29:31,596 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 [2024-11-08 10:29:31,597 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 169 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:31,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 488 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:29:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359344 states. [2024-11-08 10:29:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359344 to 355282. [2024-11-08 10:29:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355282 states, 355281 states have (on average 1.0664431815942874) internal successors, (378887), 355281 states have internal predecessors, (378887), 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) [2024-11-08 10:29:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355282 states to 355282 states and 378887 transitions. [2024-11-08 10:29:37,642 INFO L78 Accepts]: Start accepts. Automaton has 355282 states and 378887 transitions. Word has length 514 [2024-11-08 10:29:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:29:37,643 INFO L471 AbstractCegarLoop]: Abstraction has 355282 states and 378887 transitions. [2024-11-08 10:29:37,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:29:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand 355282 states and 378887 transitions. [2024-11-08 10:29:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-11-08 10:29:37,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:29:37,741 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:29:37,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 10:29:37,741 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:29:37,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:29:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 472335219, now seen corresponding path program 1 times [2024-11-08 10:29:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:29:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005650721] [2024-11-08 10:29:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:29:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:29:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:29:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-08 10:29:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:29:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005650721] [2024-11-08 10:29:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005650721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:29:38,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:29:38,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:29:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715648774] [2024-11-08 10:29:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:29:38,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:29:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:29:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:29:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:29:38,552 INFO L87 Difference]: Start difference. First operand 355282 states and 378887 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 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) [2024-11-08 10:29:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:29:42,664 INFO L93 Difference]: Finished difference Result 997819 states and 1064218 transitions. [2024-11-08 10:29:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:29:42,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 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 525 [2024-11-08 10:29:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:29:43,671 INFO L225 Difference]: With dead ends: 997819 [2024-11-08 10:29:43,672 INFO L226 Difference]: Without dead ends: 642742 [2024-11-08 10:29:43,899 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 [2024-11-08 10:29:43,901 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 178 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:29:43,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 445 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:29:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642742 states.