./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de41.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 71e52c2f7da6d5380080fb621ed04f7c322fd22e434b0426cf7577ab025ae680 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 21:02:06,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 21:02:06,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 21:02:06,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 21:02:06,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 21:02:06,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 21:02:06,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 21:02:06,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 21:02:06,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 21:02:06,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 21:02:06,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 21:02:06,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 21:02:06,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 21:02:06,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 21:02:06,175 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 21:02:06,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 21:02:06,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 21:02:06,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 21:02:06,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 21:02:06,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 21:02:06,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 21:02:06,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 21:02:06,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 21:02:06,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 21:02:06,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 21:02:06,179 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 21:02:06,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 21:02:06,179 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 21:02:06,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 21:02:06,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 21:02:06,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 21:02:06,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 21:02:06,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:02:06,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 21:02:06,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 21:02:06,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 21:02:06,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 21:02:06,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 21:02:06,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 21:02:06,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 21:02:06,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 21:02:06,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 21:02:06,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71e52c2f7da6d5380080fb621ed04f7c322fd22e434b0426cf7577ab025ae680 [2024-11-19 21:02:06,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 21:02:06,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 21:02:06,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 21:02:06,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 21:02:06,479 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 21:02:06,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de41.c [2024-11-19 21:02:07,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 21:02:07,996 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 21:02:07,997 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de41.c [2024-11-19 21:02:08,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307ed897c/7703d08c1861412caca34326898c2820/FLAG21af87269 [2024-11-19 21:02:08,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/307ed897c/7703d08c1861412caca34326898c2820 [2024-11-19 21:02:08,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 21:02:08,409 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 21:02:08,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 21:02:08,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 21:02:08,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 21:02:08,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3c9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08, skipping insertion in model container [2024-11-19 21:02:08,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,437 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 21:02:08,593 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/loops-crafted-1/in-de41.c[368,381] [2024-11-19 21:02:08,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:02:08,617 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 21:02:08,626 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/loops-crafted-1/in-de41.c[368,381] [2024-11-19 21:02:08,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 21:02:08,645 INFO L204 MainTranslator]: Completed translation [2024-11-19 21:02:08,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08 WrapperNode [2024-11-19 21:02:08,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 21:02:08,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 21:02:08,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 21:02:08,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 21:02:08,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,678 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-19 21:02:08,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 21:02:08,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 21:02:08,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 21:02:08,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 21:02:08,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,701 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]. [2024-11-19 21:02:08,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,711 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 21:02:08,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 21:02:08,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 21:02:08,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 21:02:08,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (1/1) ... [2024-11-19 21:02:08,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 21:02:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:08,755 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) [2024-11-19 21:02:08,763 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 [2024-11-19 21:02:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 21:02:08,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 21:02:08,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 21:02:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 21:02:08,876 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 21:02:08,881 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 21:02:09,085 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-19 21:02:09,085 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 21:02:09,100 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 21:02:09,102 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 21:02:09,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:02:09 BoogieIcfgContainer [2024-11-19 21:02:09,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 21:02:09,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 21:02:09,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 21:02:09,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 21:02:09,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:02:08" (1/3) ... [2024-11-19 21:02:09,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e703a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:02:09, skipping insertion in model container [2024-11-19 21:02:09,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:02:08" (2/3) ... [2024-11-19 21:02:09,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e703a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:02:09, skipping insertion in model container [2024-11-19 21:02:09,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:02:09" (3/3) ... [2024-11-19 21:02:09,113 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de41.c [2024-11-19 21:02:09,129 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 21:02:09,130 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 21:02:09,187 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 21:02:09,194 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;@6040d34e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 21:02:09,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 21:02:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:09,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 21:02:09,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:09,205 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:09,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:09,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1522018600, now seen corresponding path program 1 times [2024-11-19 21:02:09,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:09,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016713313] [2024-11-19 21:02:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:09,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:09,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:09,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016713313] [2024-11-19 21:02:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016713313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:02:09,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:02:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 21:02:09,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047850528] [2024-11-19 21:02:09,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:02:09,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 21:02:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 21:02:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 21:02:09,369 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:09,378 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2024-11-19 21:02:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 21:02:09,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-19 21:02:09,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:09,385 INFO L225 Difference]: With dead ends: 27 [2024-11-19 21:02:09,385 INFO L226 Difference]: Without dead ends: 11 [2024-11-19 21:02:09,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 21:02:09,390 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:09,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:02:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-19 21:02:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-19 21:02:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-19 21:02:09,419 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 10 [2024-11-19 21:02:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:09,419 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-19 21:02:09,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2024-11-19 21:02:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 21:02:09,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:09,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:09,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 21:02:09,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:09,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1522137764, now seen corresponding path program 1 times [2024-11-19 21:02:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:09,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702677858] [2024-11-19 21:02:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:09,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:09,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:09,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702677858] [2024-11-19 21:02:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702677858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:02:09,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:02:09,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 21:02:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121877080] [2024-11-19 21:02:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:02:09,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:02:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:02:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:02:09,979 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:10,042 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2024-11-19 21:02:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 21:02:10,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-19 21:02:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:10,044 INFO L225 Difference]: With dead ends: 27 [2024-11-19 21:02:10,044 INFO L226 Difference]: Without dead ends: 17 [2024-11-19 21:02:10,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:02:10,046 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:10,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:02:10,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-19 21:02:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-19 21:02:10,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-19 21:02:10,052 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2024-11-19 21:02:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:10,052 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-19 21:02:10,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-19 21:02:10,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 21:02:10,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:10,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:10,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 21:02:10,054 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:10,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:10,055 INFO L85 PathProgramCache]: Analyzing trace with hash 923648321, now seen corresponding path program 1 times [2024-11-19 21:02:10,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:10,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522774635] [2024-11-19 21:02:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:10,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:10,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522774635] [2024-11-19 21:02:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522774635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:10,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557570108] [2024-11-19 21:02:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:10,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:10,146 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) [2024-11-19 21:02:10,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 21:02:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:10,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 21:02:10,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:10,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557570108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:10,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:10,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-19 21:02:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969918781] [2024-11-19 21:02:10,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:10,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 21:02:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 21:02:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 21:02:10,331 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2024-11-19 21:02:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:10,521 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2024-11-19 21:02:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 21:02:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 21:02:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:10,525 INFO L225 Difference]: With dead ends: 50 [2024-11-19 21:02:10,526 INFO L226 Difference]: Without dead ends: 44 [2024-11-19 21:02:10,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-19 21:02:10,529 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:10,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 51 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:02:10,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-19 21:02:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 29. [2024-11-19 21:02:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-19 21:02:10,540 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 11 [2024-11-19 21:02:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:10,540 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-19 21:02:10,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2024-11-19 21:02:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-19 21:02:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 21:02:10,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:10,542 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:10,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 21:02:10,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:10,743 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:10,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -491381764, now seen corresponding path program 1 times [2024-11-19 21:02:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106212606] [2024-11-19 21:02:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:02:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:10,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106212606] [2024-11-19 21:02:10,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106212606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 21:02:10,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 21:02:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 21:02:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822597175] [2024-11-19 21:02:10,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 21:02:10,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 21:02:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 21:02:10,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 21:02:10,848 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:10,890 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2024-11-19 21:02:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 21:02:10,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 21:02:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:10,891 INFO L225 Difference]: With dead ends: 34 [2024-11-19 21:02:10,891 INFO L226 Difference]: Without dead ends: 24 [2024-11-19 21:02:10,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:02:10,893 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:10,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:02:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-19 21:02:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-19 21:02:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2024-11-19 21:02:10,901 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 12 [2024-11-19 21:02:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:10,901 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-19 21:02:10,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2024-11-19 21:02:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 21:02:10,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:10,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:10,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 21:02:10,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:10,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash 607187538, now seen corresponding path program 1 times [2024-11-19 21:02:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:10,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264931752] [2024-11-19 21:02:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:02:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264931752] [2024-11-19 21:02:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264931752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574472441] [2024-11-19 21:02:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:11,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:11,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:11,025 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) [2024-11-19 21:02:11,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 21:02:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:11,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 21:02:11,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:11,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:11,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574472441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:11,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:11,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-19 21:02:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711903554] [2024-11-19 21:02:11,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:11,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 21:02:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 21:02:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 21:02:11,157 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:11,223 INFO L93 Difference]: Finished difference Result 57 states and 84 transitions. [2024-11-19 21:02:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 21:02:11,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 21:02:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:11,225 INFO L225 Difference]: With dead ends: 57 [2024-11-19 21:02:11,225 INFO L226 Difference]: Without dead ends: 52 [2024-11-19 21:02:11,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 21:02:11,226 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:11,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:02:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-19 21:02:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-19 21:02:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 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) [2024-11-19 21:02:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2024-11-19 21:02:11,242 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 67 transitions. Word has length 13 [2024-11-19 21:02:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:11,242 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 67 transitions. [2024-11-19 21:02:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 67 transitions. [2024-11-19 21:02:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 21:02:11,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:11,244 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:11,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:11,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:11,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:11,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1644609900, now seen corresponding path program 1 times [2024-11-19 21:02:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752210645] [2024-11-19 21:02:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:02:11,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752210645] [2024-11-19 21:02:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752210645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435239916] [2024-11-19 21:02:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:11,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:11,744 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) [2024-11-19 21:02:11,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 21:02:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:11,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 21:02:11,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:02:11,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 21:02:12,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435239916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:12,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:12,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-19 21:02:12,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709198137] [2024-11-19 21:02:12,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:12,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 21:02:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 21:02:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-19 21:02:12,112 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:12,369 INFO L93 Difference]: Finished difference Result 77 states and 109 transitions. [2024-11-19 21:02:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 21:02:12,370 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 21:02:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:12,370 INFO L225 Difference]: With dead ends: 77 [2024-11-19 21:02:12,371 INFO L226 Difference]: Without dead ends: 66 [2024-11-19 21:02:12,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-19 21:02:12,372 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:12,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 49 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:02:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-19 21:02:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2024-11-19 21:02:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.5) internal successors, (72), 48 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 72 transitions. [2024-11-19 21:02:12,394 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 72 transitions. Word has length 14 [2024-11-19 21:02:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:12,395 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 72 transitions. [2024-11-19 21:02:12,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 72 transitions. [2024-11-19 21:02:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 21:02:12,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:12,396 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:12,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 21:02:12,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:12,597 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:12,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1219996004, now seen corresponding path program 2 times [2024-11-19 21:02:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295162183] [2024-11-19 21:02:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:12,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:12,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295162183] [2024-11-19 21:02:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295162183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607046383] [2024-11-19 21:02:12,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:02:12,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:12,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:12,704 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) [2024-11-19 21:02:12,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 21:02:12,738 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:02:12,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:12,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 21:02:12,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:12,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:12,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607046383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:12,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:12,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-19 21:02:12,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590343801] [2024-11-19 21:02:12,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:12,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 21:02:12,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:12,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 21:02:12,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-19 21:02:12,864 INFO L87 Difference]: Start difference. First operand 49 states and 72 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:13,572 INFO L93 Difference]: Finished difference Result 187 states and 311 transitions. [2024-11-19 21:02:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 21:02:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 21:02:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:13,574 INFO L225 Difference]: With dead ends: 187 [2024-11-19 21:02:13,576 INFO L226 Difference]: Without dead ends: 173 [2024-11-19 21:02:13,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2024-11-19 21:02:13,578 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 177 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:13,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 124 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 21:02:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-19 21:02:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 84. [2024-11-19 21:02:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 83 states have internal predecessors, (122), 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) [2024-11-19 21:02:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 122 transitions. [2024-11-19 21:02:13,607 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 122 transitions. Word has length 14 [2024-11-19 21:02:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:13,607 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 122 transitions. [2024-11-19 21:02:13,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 122 transitions. [2024-11-19 21:02:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 21:02:13,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:13,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:13,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 21:02:13,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:13,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:13,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2142493902, now seen corresponding path program 2 times [2024-11-19 21:02:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:13,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481707872] [2024-11-19 21:02:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:13,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481707872] [2024-11-19 21:02:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481707872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857043621] [2024-11-19 21:02:13,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:02:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:13,897 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) [2024-11-19 21:02:13,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 21:02:13,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:02:13,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:13,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 21:02:13,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:13,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857043621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:14,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-19 21:02:14,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109411706] [2024-11-19 21:02:14,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:14,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 21:02:14,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 21:02:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 21:02:14,057 INFO L87 Difference]: Start difference. First operand 84 states and 122 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:14,410 INFO L93 Difference]: Finished difference Result 146 states and 198 transitions. [2024-11-19 21:02:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 21:02:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-19 21:02:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:14,411 INFO L225 Difference]: With dead ends: 146 [2024-11-19 21:02:14,412 INFO L226 Difference]: Without dead ends: 119 [2024-11-19 21:02:14,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-11-19 21:02:14,413 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:14,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 110 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:02:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-19 21:02:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 72. [2024-11-19 21:02:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 71 states have internal predecessors, (103), 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) [2024-11-19 21:02:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 103 transitions. [2024-11-19 21:02:14,460 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 103 transitions. Word has length 16 [2024-11-19 21:02:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:14,460 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 103 transitions. [2024-11-19 21:02:14,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 103 transitions. [2024-11-19 21:02:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 21:02:14,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:14,464 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:14,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:14,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:14,668 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:14,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 856936290, now seen corresponding path program 3 times [2024-11-19 21:02:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249256967] [2024-11-19 21:02:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:14,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249256967] [2024-11-19 21:02:14,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249256967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427067181] [2024-11-19 21:02:14,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 21:02:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:14,774 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) [2024-11-19 21:02:14,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 21:02:14,810 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 21:02:14,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:14,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 21:02:14,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:14,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:14,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427067181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:14,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:14,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-19 21:02:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586851965] [2024-11-19 21:02:14,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:14,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 21:02:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 21:02:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 21:02:14,892 INFO L87 Difference]: Start difference. First operand 72 states and 103 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:14,966 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-11-19 21:02:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 21:02:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 21:02:14,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:14,967 INFO L225 Difference]: With dead ends: 87 [2024-11-19 21:02:14,967 INFO L226 Difference]: Without dead ends: 83 [2024-11-19 21:02:14,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 21:02:14,968 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:14,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 21:02:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-19 21:02:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2024-11-19 21:02:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 79 states have internal predecessors, (112), 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) [2024-11-19 21:02:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2024-11-19 21:02:15,001 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 17 [2024-11-19 21:02:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:15,001 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2024-11-19 21:02:15,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2024-11-19 21:02:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 21:02:15,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:15,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:15,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 21:02:15,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:15,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:15,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash 796886620, now seen corresponding path program 4 times [2024-11-19 21:02:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:15,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789200859] [2024-11-19 21:02:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:15,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:02:15,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789200859] [2024-11-19 21:02:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789200859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:15,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340710392] [2024-11-19 21:02:15,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 21:02:15,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:15,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:15,578 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) [2024-11-19 21:02:15,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 21:02:15,623 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 21:02:15,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:15,624 WARN L253 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 21:02:15,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:15,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340710392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:16,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:16,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 32 [2024-11-19 21:02:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800675354] [2024-11-19 21:02:16,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:16,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 21:02:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 21:02:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2024-11-19 21:02:16,447 INFO L87 Difference]: Start difference. First operand 80 states and 112 transitions. Second operand has 32 states, 32 states have (on average 1.46875) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:18,869 INFO L93 Difference]: Finished difference Result 165 states and 228 transitions. [2024-11-19 21:02:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-19 21:02:18,870 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 21:02:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:18,871 INFO L225 Difference]: With dead ends: 165 [2024-11-19 21:02:18,871 INFO L226 Difference]: Without dead ends: 148 [2024-11-19 21:02:18,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=798, Invalid=3362, Unknown=0, NotChecked=0, Total=4160 [2024-11-19 21:02:18,873 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 80 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:18,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 74 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 21:02:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-19 21:02:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 106. [2024-11-19 21:02:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.4190476190476191) internal successors, (149), 105 states have internal predecessors, (149), 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) [2024-11-19 21:02:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 149 transitions. [2024-11-19 21:02:18,913 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 149 transitions. Word has length 18 [2024-11-19 21:02:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:18,914 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 149 transitions. [2024-11-19 21:02:18,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 149 transitions. [2024-11-19 21:02:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 21:02:18,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:18,915 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:18,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:19,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:19,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:19,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -922594724, now seen corresponding path program 2 times [2024-11-19 21:02:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84031631] [2024-11-19 21:02:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 21:02:19,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:19,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84031631] [2024-11-19 21:02:19,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84031631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66951890] [2024-11-19 21:02:19,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:02:19,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:19,235 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) [2024-11-19 21:02:19,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 21:02:19,273 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:02:19,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:19,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 21:02:19,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:19,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66951890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:19,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-19 21:02:19,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542711519] [2024-11-19 21:02:19,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:19,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 21:02:19,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 21:02:19,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-19 21:02:19,462 INFO L87 Difference]: Start difference. First operand 106 states and 149 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:19,988 INFO L93 Difference]: Finished difference Result 247 states and 372 transitions. [2024-11-19 21:02:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 21:02:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 21:02:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:19,990 INFO L225 Difference]: With dead ends: 247 [2024-11-19 21:02:19,990 INFO L226 Difference]: Without dead ends: 222 [2024-11-19 21:02:19,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2024-11-19 21:02:19,991 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:19,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 166 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 21:02:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-19 21:02:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 139. [2024-11-19 21:02:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5217391304347827) internal successors, (210), 138 states have internal predecessors, (210), 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) [2024-11-19 21:02:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 210 transitions. [2024-11-19 21:02:20,032 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 210 transitions. Word has length 18 [2024-11-19 21:02:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:20,032 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 210 transitions. [2024-11-19 21:02:20,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 210 transitions. [2024-11-19 21:02:20,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 21:02:20,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:20,033 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:20,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:20,233 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,SelfDestructingSolverStorable10 [2024-11-19 21:02:20,234 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:20,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1787271340, now seen corresponding path program 5 times [2024-11-19 21:02:20,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:20,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477449538] [2024-11-19 21:02:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:20,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 21:02:20,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477449538] [2024-11-19 21:02:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477449538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448105767] [2024-11-19 21:02:20,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 21:02:20,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:20,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:20,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:20,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 21:02:20,383 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 21:02:20,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:20,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 21:02:20,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 21:02:20,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 21:02:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448105767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:20,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2024-11-19 21:02:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276433398] [2024-11-19 21:02:20,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:20,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 21:02:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 21:02:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-19 21:02:20,508 INFO L87 Difference]: Start difference. First operand 139 states and 210 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2024-11-19 21:02:20,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:20,827 INFO L93 Difference]: Finished difference Result 212 states and 297 transitions. [2024-11-19 21:02:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 21:02:20,828 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 21:02:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:20,829 INFO L225 Difference]: With dead ends: 212 [2024-11-19 21:02:20,829 INFO L226 Difference]: Without dead ends: 198 [2024-11-19 21:02:20,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-19 21:02:20,830 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:20,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 91 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:02:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-19 21:02:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 134. [2024-11-19 21:02:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 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) [2024-11-19 21:02:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 201 transitions. [2024-11-19 21:02:20,881 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 201 transitions. Word has length 18 [2024-11-19 21:02:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:20,881 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 201 transitions. [2024-11-19 21:02:20,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 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) [2024-11-19 21:02:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 201 transitions. [2024-11-19 21:02:20,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 21:02:20,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:20,882 INFO L215 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:20,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:21,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:21,082 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:21,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1793951343, now seen corresponding path program 6 times [2024-11-19 21:02:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580586095] [2024-11-19 21:02:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580586095] [2024-11-19 21:02:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580586095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759192421] [2024-11-19 21:02:21,219 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 21:02:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:21,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:21,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 21:02:21,274 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 21:02:21,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:21,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 21:02:21,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:21,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759192421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:21,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-19 21:02:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735657082] [2024-11-19 21:02:21,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:21,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 21:02:21,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 21:02:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-19 21:02:21,451 INFO L87 Difference]: Start difference. First operand 134 states and 201 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:23,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:23,446 INFO L93 Difference]: Finished difference Result 443 states and 709 transitions. [2024-11-19 21:02:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-19 21:02:23,447 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 21:02:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:23,449 INFO L225 Difference]: With dead ends: 443 [2024-11-19 21:02:23,449 INFO L226 Difference]: Without dead ends: 416 [2024-11-19 21:02:23,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1448, Invalid=3954, Unknown=0, NotChecked=0, Total=5402 [2024-11-19 21:02:23,451 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 375 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:23,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 251 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 21:02:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-19 21:02:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 167. [2024-11-19 21:02:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5120481927710843) internal successors, (251), 166 states have internal predecessors, (251), 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) [2024-11-19 21:02:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 251 transitions. [2024-11-19 21:02:23,509 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 251 transitions. Word has length 19 [2024-11-19 21:02:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:23,509 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 251 transitions. [2024-11-19 21:02:23,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 251 transitions. [2024-11-19 21:02:23,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 21:02:23,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:23,510 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:23,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:23,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 21:02:23,710 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:23,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1987539476, now seen corresponding path program 7 times [2024-11-19 21:02:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:23,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45416922] [2024-11-19 21:02:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:02:24,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45416922] [2024-11-19 21:02:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45416922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:24,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658081637] [2024-11-19 21:02:24,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 21:02:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:24,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:24,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 21:02:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:24,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 21:02:24,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:24,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658081637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:25,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:25,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-11-19 21:02:25,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815201525] [2024-11-19 21:02:25,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:25,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 21:02:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 21:02:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-11-19 21:02:25,043 INFO L87 Difference]: Start difference. First operand 167 states and 251 transitions. Second operand has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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) [2024-11-19 21:02:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:27,572 INFO L93 Difference]: Finished difference Result 301 states and 414 transitions. [2024-11-19 21:02:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 21:02:27,573 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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 22 [2024-11-19 21:02:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:27,574 INFO L225 Difference]: With dead ends: 301 [2024-11-19 21:02:27,574 INFO L226 Difference]: Without dead ends: 282 [2024-11-19 21:02:27,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=702, Invalid=4128, Unknown=0, NotChecked=0, Total=4830 [2024-11-19 21:02:27,575 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 80 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:27,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 113 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 21:02:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-19 21:02:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 208. [2024-11-19 21:02:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.4879227053140096) internal successors, (308), 207 states have internal predecessors, (308), 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) [2024-11-19 21:02:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 308 transitions. [2024-11-19 21:02:27,640 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 308 transitions. Word has length 22 [2024-11-19 21:02:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:27,640 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 308 transitions. [2024-11-19 21:02:27,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 30 states have internal predecessors, (58), 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) [2024-11-19 21:02:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 308 transitions. [2024-11-19 21:02:27,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 21:02:27,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:27,641 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:27,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:27,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 21:02:27,842 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:27,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1057765804, now seen corresponding path program 8 times [2024-11-19 21:02:27,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:27,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674014868] [2024-11-19 21:02:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 21:02:27,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674014868] [2024-11-19 21:02:27,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674014868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213469533] [2024-11-19 21:02:27,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:02:27,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:27,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:27,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 21:02:27,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:02:27,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:27,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 21:02:27,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 21:02:28,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 21:02:28,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213469533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:28,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:28,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 22 [2024-11-19 21:02:28,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529085218] [2024-11-19 21:02:28,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:28,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 21:02:28,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:28,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 21:02:28,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-19 21:02:28,194 INFO L87 Difference]: Start difference. First operand 208 states and 308 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:30,334 INFO L93 Difference]: Finished difference Result 444 states and 604 transitions. [2024-11-19 21:02:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-19 21:02:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 21:02:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:30,336 INFO L225 Difference]: With dead ends: 444 [2024-11-19 21:02:30,336 INFO L226 Difference]: Without dead ends: 372 [2024-11-19 21:02:30,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1085, Invalid=6225, Unknown=0, NotChecked=0, Total=7310 [2024-11-19 21:02:30,339 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 234 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:30,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 140 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 21:02:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-19 21:02:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 168. [2024-11-19 21:02:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.5029940119760479) internal successors, (251), 167 states have internal predecessors, (251), 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) [2024-11-19 21:02:30,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 251 transitions. [2024-11-19 21:02:30,405 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 251 transitions. Word has length 22 [2024-11-19 21:02:30,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:30,405 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 251 transitions. [2024-11-19 21:02:30,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 251 transitions. [2024-11-19 21:02:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 21:02:30,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:30,406 INFO L215 NwaCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:30,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:30,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 21:02:30,607 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:30,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash 133735425, now seen corresponding path program 9 times [2024-11-19 21:02:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:30,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705177330] [2024-11-19 21:02:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:30,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:30,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705177330] [2024-11-19 21:02:30,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705177330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:30,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820124745] [2024-11-19 21:02:30,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 21:02:30,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:30,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:30,759 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:30,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 21:02:30,944 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 21:02:30,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:30,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 21:02:30,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:30,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820124745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:31,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:31,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 21 [2024-11-19 21:02:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941241827] [2024-11-19 21:02:31,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:31,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 21:02:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 21:02:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-19 21:02:31,143 INFO L87 Difference]: Start difference. First operand 168 states and 251 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:32,522 INFO L93 Difference]: Finished difference Result 452 states and 703 transitions. [2024-11-19 21:02:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 21:02:32,522 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-19 21:02:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:32,524 INFO L225 Difference]: With dead ends: 452 [2024-11-19 21:02:32,525 INFO L226 Difference]: Without dead ends: 427 [2024-11-19 21:02:32,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=749, Invalid=1701, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 21:02:32,526 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 218 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:32,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 267 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 21:02:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-19 21:02:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2024-11-19 21:02:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.5076923076923077) internal successors, (294), 195 states have internal predecessors, (294), 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) [2024-11-19 21:02:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions. [2024-11-19 21:02:32,610 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 23 [2024-11-19 21:02:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:32,611 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 294 transitions. [2024-11-19 21:02:32,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions. [2024-11-19 21:02:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 21:02:32,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:32,612 INFO L215 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:32,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 21:02:32,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 21:02:32,812 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:32,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 553559484, now seen corresponding path program 3 times [2024-11-19 21:02:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142623603] [2024-11-19 21:02:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:33,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142623603] [2024-11-19 21:02:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142623603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:33,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219861345] [2024-11-19 21:02:33,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 21:02:33,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:33,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:33,026 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:33,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 21:02:33,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-19 21:02:33,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:33,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 21:02:33,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:33,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:02:33,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219861345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:33,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:33,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-19 21:02:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034174675] [2024-11-19 21:02:33,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:33,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 21:02:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:33,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 21:02:33,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 21:02:33,483 INFO L87 Difference]: Start difference. First operand 196 states and 294 transitions. Second operand has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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) [2024-11-19 21:02:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:40,179 INFO L93 Difference]: Finished difference Result 858 states and 1405 transitions. [2024-11-19 21:02:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-19 21:02:40,180 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-19 21:02:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:40,185 INFO L225 Difference]: With dead ends: 858 [2024-11-19 21:02:40,186 INFO L226 Difference]: Without dead ends: 841 [2024-11-19 21:02:40,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2423, Invalid=5409, Unknown=0, NotChecked=0, Total=7832 [2024-11-19 21:02:40,190 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 1412 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:40,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 702 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-19 21:02:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2024-11-19 21:02:40,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 310. [2024-11-19 21:02:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.5048543689320388) internal successors, (465), 309 states have internal predecessors, (465), 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) [2024-11-19 21:02:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 465 transitions. [2024-11-19 21:02:40,376 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 465 transitions. Word has length 24 [2024-11-19 21:02:40,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:40,377 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 465 transitions. [2024-11-19 21:02:40,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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) [2024-11-19 21:02:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 465 transitions. [2024-11-19 21:02:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 21:02:40,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:40,378 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:40,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:40,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:40,579 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:40,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1259259294, now seen corresponding path program 10 times [2024-11-19 21:02:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:40,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258302651] [2024-11-19 21:02:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:02:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258302651] [2024-11-19 21:02:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258302651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986462911] [2024-11-19 21:02:40,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 21:02:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:40,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:40,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 21:02:40,762 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 21:02:40,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:40,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 21:02:40,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:02:40,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 21:02:41,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986462911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:41,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:41,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-19 21:02:41,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904803813] [2024-11-19 21:02:41,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:41,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 21:02:41,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:41,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 21:02:41,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-11-19 21:02:41,091 INFO L87 Difference]: Start difference. First operand 310 states and 465 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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) [2024-11-19 21:02:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:41,932 INFO L93 Difference]: Finished difference Result 562 states and 741 transitions. [2024-11-19 21:02:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-19 21:02:41,933 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 25 [2024-11-19 21:02:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:41,935 INFO L225 Difference]: With dead ends: 562 [2024-11-19 21:02:41,935 INFO L226 Difference]: Without dead ends: 536 [2024-11-19 21:02:41,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 21:02:41,937 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 132 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:41,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 134 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 21:02:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-19 21:02:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 328. [2024-11-19 21:02:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.507645259938838) internal successors, (493), 327 states have internal predecessors, (493), 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) [2024-11-19 21:02:42,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 493 transitions. [2024-11-19 21:02:42,146 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 493 transitions. Word has length 25 [2024-11-19 21:02:42,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:42,146 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 493 transitions. [2024-11-19 21:02:42,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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) [2024-11-19 21:02:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 493 transitions. [2024-11-19 21:02:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 21:02:42,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:42,148 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:42,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:42,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 21:02:42,348 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:42,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash -955275428, now seen corresponding path program 11 times [2024-11-19 21:02:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947278584] [2024-11-19 21:02:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947278584] [2024-11-19 21:02:42,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947278584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386250617] [2024-11-19 21:02:42,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 21:02:42,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:42,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:42,858 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:42,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 21:02:42,915 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 21:02:42,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:42,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 21:02:42,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 21:02:43,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:02:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386250617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:43,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:43,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 34 [2024-11-19 21:02:43,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453098823] [2024-11-19 21:02:43,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:43,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 21:02:43,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:43,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 21:02:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 21:02:43,806 INFO L87 Difference]: Start difference. First operand 328 states and 493 transitions. Second operand has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:45,692 INFO L93 Difference]: Finished difference Result 466 states and 633 transitions. [2024-11-19 21:02:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-19 21:02:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-19 21:02:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:45,695 INFO L225 Difference]: With dead ends: 466 [2024-11-19 21:02:45,695 INFO L226 Difference]: Without dead ends: 446 [2024-11-19 21:02:45,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=378, Invalid=1878, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 21:02:45,696 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:45,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 81 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 21:02:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-19 21:02:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 322. [2024-11-19 21:02:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.514018691588785) internal successors, (486), 321 states have internal predecessors, (486), 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) [2024-11-19 21:02:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 486 transitions. [2024-11-19 21:02:45,899 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 486 transitions. Word has length 26 [2024-11-19 21:02:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:45,899 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 486 transitions. [2024-11-19 21:02:45,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 486 transitions. [2024-11-19 21:02:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 21:02:45,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:45,900 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:45,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:46,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:46,101 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:46,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1360093420, now seen corresponding path program 12 times [2024-11-19 21:02:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18442523] [2024-11-19 21:02:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 21:02:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18442523] [2024-11-19 21:02:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18442523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998210296] [2024-11-19 21:02:46,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 21:02:46,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:46,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:46,377 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:46,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 21:02:46,419 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-19 21:02:46,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:46,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 21:02:46,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 21:02:46,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 21:02:46,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998210296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:46,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:46,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 18 [2024-11-19 21:02:46,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166654578] [2024-11-19 21:02:46,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:46,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 21:02:46,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:46,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 21:02:46,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-11-19 21:02:46,604 INFO L87 Difference]: Start difference. First operand 322 states and 486 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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) [2024-11-19 21:02:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:46,939 INFO L93 Difference]: Finished difference Result 389 states and 574 transitions. [2024-11-19 21:02:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 21:02:46,940 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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 26 [2024-11-19 21:02:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:46,941 INFO L225 Difference]: With dead ends: 389 [2024-11-19 21:02:46,941 INFO L226 Difference]: Without dead ends: 385 [2024-11-19 21:02:46,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-19 21:02:46,942 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:46,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 165 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:02:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-19 21:02:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 376. [2024-11-19 21:02:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.472) internal successors, (552), 375 states have internal predecessors, (552), 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) [2024-11-19 21:02:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 552 transitions. [2024-11-19 21:02:47,176 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 552 transitions. Word has length 26 [2024-11-19 21:02:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:47,176 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 552 transitions. [2024-11-19 21:02:47,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 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) [2024-11-19 21:02:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 552 transitions. [2024-11-19 21:02:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 21:02:47,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:47,177 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:47,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 21:02:47,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:47,378 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:47,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash 479173582, now seen corresponding path program 13 times [2024-11-19 21:02:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:47,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471205571] [2024-11-19 21:02:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:47,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 21:02:47,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471205571] [2024-11-19 21:02:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471205571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552360210] [2024-11-19 21:02:47,547 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 21:02:47,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:47,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:47,550 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:47,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 21:02:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:47,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 21:02:47,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 21:02:47,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 21:02:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552360210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:47,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:47,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 28 [2024-11-19 21:02:47,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749493647] [2024-11-19 21:02:47,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:47,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 21:02:47,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:47,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 21:02:47,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-19 21:02:47,949 INFO L87 Difference]: Start difference. First operand 376 states and 552 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:02:54,118 INFO L93 Difference]: Finished difference Result 929 states and 1159 transitions. [2024-11-19 21:02:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-19 21:02:54,118 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-19 21:02:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:02:54,122 INFO L225 Difference]: With dead ends: 929 [2024-11-19 21:02:54,122 INFO L226 Difference]: Without dead ends: 855 [2024-11-19 21:02:54,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7608 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3126, Invalid=19524, Unknown=0, NotChecked=0, Total=22650 [2024-11-19 21:02:54,127 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 660 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 21:02:54,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 344 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 21:02:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-19 21:02:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 371. [2024-11-19 21:02:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.427027027027027) internal successors, (528), 370 states have internal predecessors, (528), 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) [2024-11-19 21:02:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 528 transitions. [2024-11-19 21:02:54,385 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 528 transitions. Word has length 28 [2024-11-19 21:02:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:02:54,385 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 528 transitions. [2024-11-19 21:02:54,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:02:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 528 transitions. [2024-11-19 21:02:54,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 21:02:54,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:02:54,386 INFO L215 NwaCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:02:54,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 21:02:54,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:54,591 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:02:54,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:02:54,591 INFO L85 PathProgramCache]: Analyzing trace with hash 364392908, now seen corresponding path program 14 times [2024-11-19 21:02:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:02:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549497951] [2024-11-19 21:02:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:02:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:02:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:02:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:02:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549497951] [2024-11-19 21:02:54,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549497951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:02:54,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476757719] [2024-11-19 21:02:54,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 21:02:54,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:02:54,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:02:54,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:02:54,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 21:02:54,925 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 21:02:54,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:02:54,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-19 21:02:54,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:02:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:54,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:02:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 21:02:55,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476757719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:02:55,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:02:55,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-19 21:02:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189447239] [2024-11-19 21:02:55,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:02:55,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-19 21:02:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:02:55,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-19 21:02:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 21:02:55,412 INFO L87 Difference]: Start difference. First operand 371 states and 528 transitions. Second operand has 39 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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) [2024-11-19 21:03:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:03:12,704 INFO L93 Difference]: Finished difference Result 1327 states and 2076 transitions. [2024-11-19 21:03:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-11-19 21:03:12,704 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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 28 [2024-11-19 21:03:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:03:12,709 INFO L225 Difference]: With dead ends: 1327 [2024-11-19 21:03:12,709 INFO L226 Difference]: Without dead ends: 1277 [2024-11-19 21:03:12,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10671 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=7603, Invalid=20119, Unknown=0, NotChecked=0, Total=27722 [2024-11-19 21:03:12,711 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 1798 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-19 21:03:12,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 893 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-19 21:03:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2024-11-19 21:03:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 383. [2024-11-19 21:03:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.431937172774869) internal successors, (547), 382 states have internal predecessors, (547), 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) [2024-11-19 21:03:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 547 transitions. [2024-11-19 21:03:13,023 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 547 transitions. Word has length 28 [2024-11-19 21:03:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:03:13,023 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 547 transitions. [2024-11-19 21:03:13,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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) [2024-11-19 21:03:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 547 transitions. [2024-11-19 21:03:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 21:03:13,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:03:13,024 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:03:13,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 21:03:13,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:13,228 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:03:13,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:03:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1507034516, now seen corresponding path program 15 times [2024-11-19 21:03:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:03:13,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863745438] [2024-11-19 21:03:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:03:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:03:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:03:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 21:03:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:03:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863745438] [2024-11-19 21:03:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863745438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:03:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764101187] [2024-11-19 21:03:13,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 21:03:13,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:13,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:03:13,903 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:03:13,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 21:03:14,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 21:03:14,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:03:14,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-19 21:03:14,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:03:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 21:03:15,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:03:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 21:03:15,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764101187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:03:15,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:03:15,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 17] total 46 [2024-11-19 21:03:15,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675312445] [2024-11-19 21:03:15,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:03:15,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 21:03:15,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:03:15,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 21:03:15,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1777, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 21:03:15,729 INFO L87 Difference]: Start difference. First operand 383 states and 547 transitions. Second operand has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:03:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:03:18,777 INFO L93 Difference]: Finished difference Result 575 states and 743 transitions. [2024-11-19 21:03:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-19 21:03:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-19 21:03:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:03:18,779 INFO L225 Difference]: With dead ends: 575 [2024-11-19 21:03:18,779 INFO L226 Difference]: Without dead ends: 549 [2024-11-19 21:03:18,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=575, Invalid=2965, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 21:03:18,780 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 21:03:18,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 114 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 21:03:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-19 21:03:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 376. [2024-11-19 21:03:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.4373333333333334) internal successors, (539), 375 states have internal predecessors, (539), 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) [2024-11-19 21:03:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 539 transitions. [2024-11-19 21:03:19,142 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 539 transitions. Word has length 30 [2024-11-19 21:03:19,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:03:19,143 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 539 transitions. [2024-11-19 21:03:19,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:03:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 539 transitions. [2024-11-19 21:03:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 21:03:19,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:03:19,144 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:03:19,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 21:03:19,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 21:03:19,344 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:03:19,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:03:19,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1942210268, now seen corresponding path program 16 times [2024-11-19 21:03:19,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:03:19,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44681776] [2024-11-19 21:03:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:03:19,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:03:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:03:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 21:03:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:03:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44681776] [2024-11-19 21:03:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44681776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:03:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598266959] [2024-11-19 21:03:19,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 21:03:19,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:19,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:03:19,710 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:03:19,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 21:03:19,760 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 21:03:19,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:03:19,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 21:03:19,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:03:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 21:03:19,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:03:20,008 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 21:03:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598266959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:03:20,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:03:20,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 21 [2024-11-19 21:03:20,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182852397] [2024-11-19 21:03:20,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:03:20,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 21:03:20,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:03:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 21:03:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-19 21:03:20,009 INFO L87 Difference]: Start difference. First operand 376 states and 539 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 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) [2024-11-19 21:03:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:03:20,569 INFO L93 Difference]: Finished difference Result 451 states and 638 transitions. [2024-11-19 21:03:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 21:03:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-19 21:03:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:03:20,570 INFO L225 Difference]: With dead ends: 451 [2024-11-19 21:03:20,570 INFO L226 Difference]: Without dead ends: 447 [2024-11-19 21:03:20,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2024-11-19 21:03:20,571 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 88 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 21:03:20,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 151 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 21:03:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-19 21:03:21,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 429. [2024-11-19 21:03:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.4135514018691588) internal successors, (605), 428 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 21:03:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 605 transitions. [2024-11-19 21:03:21,011 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 605 transitions. Word has length 30 [2024-11-19 21:03:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:03:21,012 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 605 transitions. [2024-11-19 21:03:21,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 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) [2024-11-19 21:03:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 605 transitions. [2024-11-19 21:03:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 21:03:21,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:03:21,013 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:03:21,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-19 21:03:21,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 21:03:21,213 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:03:21,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:03:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash 310343900, now seen corresponding path program 17 times [2024-11-19 21:03:21,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:03:21,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876406009] [2024-11-19 21:03:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:03:21,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:03:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:03:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-19 21:03:21,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:03:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876406009] [2024-11-19 21:03:21,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876406009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:03:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725572252] [2024-11-19 21:03:21,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 21:03:21,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:21,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:03:21,380 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:03:21,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 21:03:21,528 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 21:03:21,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:03:21,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 21:03:21,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:03:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-19 21:03:21,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:03:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-19 21:03:21,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725572252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:03:21,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:03:21,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 8] total 23 [2024-11-19 21:03:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859586005] [2024-11-19 21:03:21,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:03:21,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 21:03:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:03:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 21:03:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-19 21:03:21,700 INFO L87 Difference]: Start difference. First operand 429 states and 605 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2024-11-19 21:03:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:03:22,901 INFO L93 Difference]: Finished difference Result 621 states and 812 transitions. [2024-11-19 21:03:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-19 21:03:22,901 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-19 21:03:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:03:22,904 INFO L225 Difference]: With dead ends: 621 [2024-11-19 21:03:22,904 INFO L226 Difference]: Without dead ends: 585 [2024-11-19 21:03:22,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=1641, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 21:03:22,905 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 21:03:22,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 291 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 21:03:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-19 21:03:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 409. [2024-11-19 21:03:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.4044117647058822) internal successors, (573), 408 states have internal predecessors, (573), 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) [2024-11-19 21:03:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 573 transitions. [2024-11-19 21:03:23,296 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 573 transitions. Word has length 30 [2024-11-19 21:03:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:03:23,296 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 573 transitions. [2024-11-19 21:03:23,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2024-11-19 21:03:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 573 transitions. [2024-11-19 21:03:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 21:03:23,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:03:23,297 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:03:23,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-19 21:03:23,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:23,502 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:03:23,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:03:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1527063074, now seen corresponding path program 18 times [2024-11-19 21:03:23,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:03:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626372104] [2024-11-19 21:03:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:03:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:03:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:03:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 21:03:23,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:03:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626372104] [2024-11-19 21:03:23,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626372104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:03:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445913854] [2024-11-19 21:03:23,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 21:03:23,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:23,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:03:23,704 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:03:23,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 21:03:23,776 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 21:03:23,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 21:03:23,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 21:03:23,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:03:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 21:03:23,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:03:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-19 21:03:24,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445913854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:03:24,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:03:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-11-19 21:03:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316551641] [2024-11-19 21:03:24,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:03:24,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 21:03:24,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:03:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 21:03:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 21:03:24,259 INFO L87 Difference]: Start difference. First operand 409 states and 573 transitions. Second operand has 37 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 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) [2024-11-19 21:03:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 21:03:26,620 INFO L93 Difference]: Finished difference Result 875 states and 1073 transitions. [2024-11-19 21:03:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-19 21:03:26,621 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-19 21:03:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 21:03:26,624 INFO L225 Difference]: With dead ends: 875 [2024-11-19 21:03:26,624 INFO L226 Difference]: Without dead ends: 826 [2024-11-19 21:03:26,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1151, Invalid=4549, Unknown=0, NotChecked=0, Total=5700 [2024-11-19 21:03:26,625 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 267 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 21:03:26,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 236 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 21:03:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-19 21:03:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 424. [2024-11-19 21:03:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.4066193853427895) internal successors, (595), 423 states have internal predecessors, (595), 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) [2024-11-19 21:03:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 595 transitions. [2024-11-19 21:03:27,021 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 595 transitions. Word has length 31 [2024-11-19 21:03:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 21:03:27,021 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 595 transitions. [2024-11-19 21:03:27,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 37 states have internal predecessors, (54), 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) [2024-11-19 21:03:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 595 transitions. [2024-11-19 21:03:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 21:03:27,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 21:03:27,022 INFO L215 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 21:03:27,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-19 21:03:27,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:27,227 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 21:03:27,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 21:03:27,227 INFO L85 PathProgramCache]: Analyzing trace with hash -767441220, now seen corresponding path program 19 times [2024-11-19 21:03:27,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 21:03:27,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676935991] [2024-11-19 21:03:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 21:03:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 21:03:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:03:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:03:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 21:03:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676935991] [2024-11-19 21:03:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676935991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 21:03:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304544499] [2024-11-19 21:03:27,522 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 21:03:27,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 21:03:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 21:03:27,523 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 21:03:27,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-19 21:03:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 21:03:27,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-19 21:03:27,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 21:03:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:03:27,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 21:03:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 21:03:28,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304544499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 21:03:28,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 21:03:28,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-11-19 21:03:28,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980144050] [2024-11-19 21:03:28,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 21:03:28,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 21:03:28,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 21:03:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 21:03:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1422, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 21:03:28,168 INFO L87 Difference]: Start difference. First operand 424 states and 595 transitions. Second operand has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 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)