./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/eca-rers2012/Problem14_label53.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 f09951f8169d75602552a0c69d410baacae8493e4742c50eb18d4008647dffd9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:18:43,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:18:43,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:18:43,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:18:43,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:18:44,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:18:44,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:18:44,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:18:44,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:18:44,012 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:18:44,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:18:44,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:18:44,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:18:44,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:18:44,016 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:18:44,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:18:44,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:18:44,017 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:18:44,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:18:44,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:18:44,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:18:44,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:18:44,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:18:44,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:18:44,022 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:18:44,023 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:18:44,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:18:44,023 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:18:44,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:18:44,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:18:44,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:18:44,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:18:44,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:18:44,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:18:44,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:18:44,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:18:44,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:18:44,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:18:44,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:18:44,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:18:44,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:18:44,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:18:44,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f09951f8169d75602552a0c69d410baacae8493e4742c50eb18d4008647dffd9 [2024-10-23 21:18:44,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:18:44,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:18:44,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:18:44,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:18:44,357 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:18:44,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label53.c [2024-10-23 21:18:45,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:18:46,050 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:18:46,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label53.c [2024-10-23 21:18:46,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec19d76c/4075824b00f04f0a88baf8e437dc56d3/FLAG13287cc88 [2024-10-23 21:18:46,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec19d76c/4075824b00f04f0a88baf8e437dc56d3 [2024-10-23 21:18:46,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:18:46,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:18:46,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:18:46,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:18:46,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:18:46,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e3cd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46, skipping insertion in model container [2024-10-23 21:18:46,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:18:46,431 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label53.c[5103,5116] [2024-10-23 21:18:46,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:18:46,620 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:18:46,647 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label53.c[5103,5116] [2024-10-23 21:18:46,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:18:46,746 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:18:46,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46 WrapperNode [2024-10-23 21:18:46,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:18:46,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:18:46,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:18:46,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:18:46,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,831 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 859 [2024-10-23 21:18:46,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:18:46,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:18:46,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:18:46,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:18:46,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,878 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]. [2024-10-23 21:18:46,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:18:46,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:18:46,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:18:46,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:18:46,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (1/1) ... [2024-10-23 21:18:46,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:18:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:46,989 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) [2024-10-23 21:18:46,993 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 [2024-10-23 21:18:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:18:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:18:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:18:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:18:47,174 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:18:47,177 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:18:48,450 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-10-23 21:18:48,450 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:18:48,510 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:18:48,512 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:18:48,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:18:48 BoogieIcfgContainer [2024-10-23 21:18:48,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:18:48,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:18:48,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:18:48,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:18:48,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:18:46" (1/3) ... [2024-10-23 21:18:48,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467663f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:18:48, skipping insertion in model container [2024-10-23 21:18:48,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:18:46" (2/3) ... [2024-10-23 21:18:48,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467663f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:18:48, skipping insertion in model container [2024-10-23 21:18:48,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:18:48" (3/3) ... [2024-10-23 21:18:48,523 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53.c [2024-10-23 21:18:48,539 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:18:48,539 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:18:48,614 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:18:48,623 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;@12aeb94d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:18:48,624 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:18:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:48,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-23 21:18:48,637 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:48,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:48,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:48,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash -892209182, now seen corresponding path program 1 times [2024-10-23 21:18:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375820900] [2024-10-23 21:18:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375820900] [2024-10-23 21:18:48,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375820900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:18:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836204278] [2024-10-23 21:18:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:48,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:18:48,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:18:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:18:48,863 INFO L87 Difference]: Start difference. First operand has 183 states, 181 states have (on average 1.988950276243094) internal successors, (360), 182 states have internal predecessors, (360), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:48,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:48,901 INFO L93 Difference]: Finished difference Result 365 states and 719 transitions. [2024-10-23 21:18:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:18:48,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-10-23 21:18:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:48,913 INFO L225 Difference]: With dead ends: 365 [2024-10-23 21:18:48,914 INFO L226 Difference]: Without dead ends: 181 [2024-10-23 21:18:48,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:18:48,920 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:48,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 295 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:18:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-23 21:18:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-10-23 21:18:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.6388888888888888) internal successors, (295), 180 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 295 transitions. [2024-10-23 21:18:48,964 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 295 transitions. Word has length 48 [2024-10-23 21:18:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:48,965 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 295 transitions. [2024-10-23 21:18:48,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 295 transitions. [2024-10-23 21:18:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-23 21:18:48,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:48,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:48,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:18:48,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:48,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash -297844156, now seen corresponding path program 1 times [2024-10-23 21:18:48,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:48,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585536387] [2024-10-23 21:18:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:48,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:18:49,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:49,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585536387] [2024-10-23 21:18:49,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585536387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:49,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:49,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644737853] [2024-10-23 21:18:49,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:49,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:49,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:49,298 INFO L87 Difference]: Start difference. First operand 181 states and 295 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:50,537 INFO L93 Difference]: Finished difference Result 717 states and 1175 transitions. [2024-10-23 21:18:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-10-23 21:18:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:50,541 INFO L225 Difference]: With dead ends: 717 [2024-10-23 21:18:50,543 INFO L226 Difference]: Without dead ends: 537 [2024-10-23 21:18:50,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:18:50,546 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 481 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:50,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 14 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:18:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-10-23 21:18:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2024-10-23 21:18:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 536 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 777 transitions. [2024-10-23 21:18:50,583 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 777 transitions. Word has length 48 [2024-10-23 21:18:50,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:50,584 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 777 transitions. [2024-10-23 21:18:50,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 777 transitions. [2024-10-23 21:18:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-23 21:18:50,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:50,591 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:50,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:18:50,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:50,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1696082572, now seen corresponding path program 1 times [2024-10-23 21:18:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826185069] [2024-10-23 21:18:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:50,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-23 21:18:50,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826185069] [2024-10-23 21:18:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826185069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:50,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:18:50,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97193823] [2024-10-23 21:18:50,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:50,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:50,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:50,885 INFO L87 Difference]: Start difference. First operand 537 states and 777 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:51,587 INFO L93 Difference]: Finished difference Result 1073 states and 1655 transitions. [2024-10-23 21:18:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:51,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 196 [2024-10-23 21:18:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:51,591 INFO L225 Difference]: With dead ends: 1073 [2024-10-23 21:18:51,591 INFO L226 Difference]: Without dead ends: 715 [2024-10-23 21:18:51,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:51,595 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 125 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:51,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 55 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:18:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-10-23 21:18:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-10-23 21:18:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 1.354341736694678) internal successors, (967), 714 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 967 transitions. [2024-10-23 21:18:51,636 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 967 transitions. Word has length 196 [2024-10-23 21:18:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:51,637 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 967 transitions. [2024-10-23 21:18:51,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 967 transitions. [2024-10-23 21:18:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-23 21:18:51,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:51,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:51,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:18:51,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:51,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -102788281, now seen corresponding path program 1 times [2024-10-23 21:18:51,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:51,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419441160] [2024-10-23 21:18:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-23 21:18:52,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419441160] [2024-10-23 21:18:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419441160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:52,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:52,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239690623] [2024-10-23 21:18:52,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:52,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:52,014 INFO L87 Difference]: Start difference. First operand 715 states and 967 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:52,771 INFO L93 Difference]: Finished difference Result 1636 states and 2267 transitions. [2024-10-23 21:18:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:52,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 219 [2024-10-23 21:18:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:52,776 INFO L225 Difference]: With dead ends: 1636 [2024-10-23 21:18:52,776 INFO L226 Difference]: Without dead ends: 1071 [2024-10-23 21:18:52,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:52,778 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 110 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:52,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 110 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:18:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-10-23 21:18:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 893. [2024-10-23 21:18:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 892 states have (on average 1.1726457399103138) internal successors, (1046), 892 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1046 transitions. [2024-10-23 21:18:52,796 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1046 transitions. Word has length 219 [2024-10-23 21:18:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:52,796 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1046 transitions. [2024-10-23 21:18:52,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1046 transitions. [2024-10-23 21:18:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-10-23 21:18:52,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:52,802 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:52,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:18:52,802 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:52,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash 583259477, now seen corresponding path program 1 times [2024-10-23 21:18:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061248331] [2024-10-23 21:18:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:52,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 204 proven. 130 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-23 21:18:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061248331] [2024-10-23 21:18:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061248331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290860235] [2024-10-23 21:18:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:53,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:53,582 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) [2024-10-23 21:18:53,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:18:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:53,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:18:53,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:18:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-10-23 21:18:53,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:18:53,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290860235] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:53,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:18:53,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:18:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203055316] [2024-10-23 21:18:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:53,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:53,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:53,896 INFO L87 Difference]: Start difference. First operand 893 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:54,468 INFO L93 Difference]: Finished difference Result 2319 states and 2777 transitions. [2024-10-23 21:18:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:54,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 350 [2024-10-23 21:18:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:54,476 INFO L225 Difference]: With dead ends: 2319 [2024-10-23 21:18:54,476 INFO L226 Difference]: Without dead ends: 1605 [2024-10-23 21:18:54,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:18:54,479 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:54,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 262 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2024-10-23 21:18:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1427. [2024-10-23 21:18:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 1.1402524544179524) internal successors, (1626), 1426 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1626 transitions. [2024-10-23 21:18:54,504 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1626 transitions. Word has length 350 [2024-10-23 21:18:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:54,507 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1626 transitions. [2024-10-23 21:18:54,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1626 transitions. [2024-10-23 21:18:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-10-23 21:18:54,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:54,514 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:54,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:18:54,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:54,715 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:54,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1694679334, now seen corresponding path program 1 times [2024-10-23 21:18:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:54,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226415379] [2024-10-23 21:18:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:54,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 595 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-23 21:18:55,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226415379] [2024-10-23 21:18:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226415379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:55,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23203738] [2024-10-23 21:18:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:55,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:18:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:18:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:55,230 INFO L87 Difference]: Start difference. First operand 1427 states and 1626 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:55,796 INFO L93 Difference]: Finished difference Result 3209 states and 3756 transitions. [2024-10-23 21:18:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:18:55,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2024-10-23 21:18:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:55,805 INFO L225 Difference]: With dead ends: 3209 [2024-10-23 21:18:55,806 INFO L226 Difference]: Without dead ends: 1961 [2024-10-23 21:18:55,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:18:55,809 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:55,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 75 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:18:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2024-10-23 21:18:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1783. [2024-10-23 21:18:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 1.1341189674523007) internal successors, (2021), 1782 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2021 transitions. [2024-10-23 21:18:55,844 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2021 transitions. Word has length 449 [2024-10-23 21:18:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:55,845 INFO L471 AbstractCegarLoop]: Abstraction has 1783 states and 2021 transitions. [2024-10-23 21:18:55,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2021 transitions. [2024-10-23 21:18:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-10-23 21:18:55,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:55,853 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:55,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:18:55,853 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:55,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:55,854 INFO L85 PathProgramCache]: Analyzing trace with hash -314600810, now seen corresponding path program 1 times [2024-10-23 21:18:55,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:55,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64229827] [2024-10-23 21:18:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-10-23 21:18:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64229827] [2024-10-23 21:18:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64229827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105790861] [2024-10-23 21:18:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:56,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:56,379 INFO L87 Difference]: Start difference. First operand 1783 states and 2021 transitions. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:57,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:57,269 INFO L93 Difference]: Finished difference Result 3743 states and 4237 transitions. [2024-10-23 21:18:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:57,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 473 [2024-10-23 21:18:57,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:57,276 INFO L225 Difference]: With dead ends: 3743 [2024-10-23 21:18:57,277 INFO L226 Difference]: Without dead ends: 2139 [2024-10-23 21:18:57,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:57,279 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 124 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:57,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 88 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:18:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-10-23 21:18:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2024-10-23 21:18:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.117867165575304) internal successors, (2390), 2138 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2390 transitions. [2024-10-23 21:18:57,315 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2390 transitions. Word has length 473 [2024-10-23 21:18:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:57,315 INFO L471 AbstractCegarLoop]: Abstraction has 2139 states and 2390 transitions. [2024-10-23 21:18:57,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2390 transitions. [2024-10-23 21:18:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-10-23 21:18:57,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:57,324 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:57,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:18:57,324 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:57,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 159748493, now seen corresponding path program 1 times [2024-10-23 21:18:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135492634] [2024-10-23 21:18:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-10-23 21:18:57,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:57,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135492634] [2024-10-23 21:18:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135492634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:18:57,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:18:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:18:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441886834] [2024-10-23 21:18:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:18:57,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:18:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:18:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:18:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:57,746 INFO L87 Difference]: Start difference. First operand 2139 states and 2390 transitions. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:18:58,347 INFO L93 Difference]: Finished difference Result 4335 states and 4848 transitions. [2024-10-23 21:18:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:18:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 529 [2024-10-23 21:18:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:18:58,355 INFO L225 Difference]: With dead ends: 4335 [2024-10-23 21:18:58,355 INFO L226 Difference]: Without dead ends: 2317 [2024-10-23 21:18:58,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:18:58,358 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 124 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:18:58,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 14 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 21:18:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2024-10-23 21:18:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2139. [2024-10-23 21:18:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.0855940130963517) internal successors, (2321), 2138 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2321 transitions. [2024-10-23 21:18:58,393 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2321 transitions. Word has length 529 [2024-10-23 21:18:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:18:58,394 INFO L471 AbstractCegarLoop]: Abstraction has 2139 states and 2321 transitions. [2024-10-23 21:18:58,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:18:58,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2321 transitions. [2024-10-23 21:18:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-10-23 21:18:58,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:18:58,404 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:18:58,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:18:58,405 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:18:58,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:18:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1459761138, now seen corresponding path program 2 times [2024-10-23 21:18:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:18:58,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704736757] [2024-10-23 21:18:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:18:58,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:18:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:18:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 819 proven. 11 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:18:58,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:18:58,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704736757] [2024-10-23 21:18:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704736757] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:18:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216301769] [2024-10-23 21:18:58,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 21:18:58,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:18:58,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:18:59,001 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) [2024-10-23 21:18:59,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:18:59,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 21:18:59,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 21:18:59,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:18:59,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:19:00,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216301769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:00,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102559126] [2024-10-23 21:19:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:00,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:00,032 INFO L87 Difference]: Start difference. First operand 2139 states and 2321 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:00,818 INFO L93 Difference]: Finished difference Result 4989 states and 5474 transitions. [2024-10-23 21:19:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:00,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 555 [2024-10-23 21:19:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:00,828 INFO L225 Difference]: With dead ends: 4989 [2024-10-23 21:19:00,828 INFO L226 Difference]: Without dead ends: 3029 [2024-10-23 21:19:00,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:00,833 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 161 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:00,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 13 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:19:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2024-10-23 21:19:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2495. [2024-10-23 21:19:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2494 states have (on average 1.0789895749799518) internal successors, (2691), 2494 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 2691 transitions. [2024-10-23 21:19:00,879 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 2691 transitions. Word has length 555 [2024-10-23 21:19:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:00,880 INFO L471 AbstractCegarLoop]: Abstraction has 2495 states and 2691 transitions. [2024-10-23 21:19:00,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 2691 transitions. [2024-10-23 21:19:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-10-23 21:19:00,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:00,885 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:00,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:19:01,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-23 21:19:01,086 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:01,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:01,087 INFO L85 PathProgramCache]: Analyzing trace with hash 388047133, now seen corresponding path program 1 times [2024-10-23 21:19:01,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651785239] [2024-10-23 21:19:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:01,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:19:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651785239] [2024-10-23 21:19:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651785239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:01,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:01,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211789731] [2024-10-23 21:19:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:01,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:01,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:01,544 INFO L87 Difference]: Start difference. First operand 2495 states and 2691 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 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) [2024-10-23 21:19:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:02,079 INFO L93 Difference]: Finished difference Result 5701 states and 6215 transitions. [2024-10-23 21:19:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 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) Word has length 562 [2024-10-23 21:19:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:02,090 INFO L225 Difference]: With dead ends: 5701 [2024-10-23 21:19:02,091 INFO L226 Difference]: Without dead ends: 3385 [2024-10-23 21:19:02,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:02,094 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:02,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 200 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:19:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2024-10-23 21:19:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 3207. [2024-10-23 21:19:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3206 states have (on average 1.0770430442919525) internal successors, (3453), 3206 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 3453 transitions. [2024-10-23 21:19:02,165 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 3453 transitions. Word has length 562 [2024-10-23 21:19:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:02,166 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 3453 transitions. [2024-10-23 21:19:02,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 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) [2024-10-23 21:19:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 3453 transitions. [2024-10-23 21:19:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-10-23 21:19:02,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:02,172 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:02,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:19:02,173 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:02,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash -253105904, now seen corresponding path program 1 times [2024-10-23 21:19:02,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618375400] [2024-10-23 21:19:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:02,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 846 proven. 195 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-23 21:19:03,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618375400] [2024-10-23 21:19:03,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618375400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752737638] [2024-10-23 21:19:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:03,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:03,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:03,044 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) [2024-10-23 21:19:03,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:19:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:03,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:19:03,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 514 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2024-10-23 21:19:03,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752737638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:03,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:03,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-23 21:19:03,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342631587] [2024-10-23 21:19:03,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:03,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:03,840 INFO L87 Difference]: Start difference. First operand 3207 states and 3453 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:04,273 INFO L93 Difference]: Finished difference Result 6947 states and 7480 transitions. [2024-10-23 21:19:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 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 607 [2024-10-23 21:19:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:04,285 INFO L225 Difference]: With dead ends: 6947 [2024-10-23 21:19:04,285 INFO L226 Difference]: Without dead ends: 3919 [2024-10-23 21:19:04,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:04,290 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:04,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2024-10-23 21:19:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3385. [2024-10-23 21:19:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3384 states have (on average 1.0783096926713949) internal successors, (3649), 3384 states have internal predecessors, (3649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 3649 transitions. [2024-10-23 21:19:04,352 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 3649 transitions. Word has length 607 [2024-10-23 21:19:04,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:04,353 INFO L471 AbstractCegarLoop]: Abstraction has 3385 states and 3649 transitions. [2024-10-23 21:19:04,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 3649 transitions. [2024-10-23 21:19:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2024-10-23 21:19:04,358 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:04,360 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:04,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 21:19:04,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:04,561 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:04,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:04,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1536998468, now seen corresponding path program 1 times [2024-10-23 21:19:04,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:04,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014398467] [2024-10-23 21:19:04,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:04,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 837 proven. 0 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:19:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014398467] [2024-10-23 21:19:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014398467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:04,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:04,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689160293] [2024-10-23 21:19:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:04,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:04,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:04,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:04,887 INFO L87 Difference]: Start difference. First operand 3385 states and 3649 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:05,296 INFO L93 Difference]: Finished difference Result 8015 states and 8716 transitions. [2024-10-23 21:19:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:05,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 629 [2024-10-23 21:19:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:05,310 INFO L225 Difference]: With dead ends: 8015 [2024-10-23 21:19:05,310 INFO L226 Difference]: Without dead ends: 4809 [2024-10-23 21:19:05,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:05,315 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:05,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2024-10-23 21:19:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4809. [2024-10-23 21:19:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.072171381031614) internal successors, (5155), 4808 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 5155 transitions. [2024-10-23 21:19:05,380 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 5155 transitions. Word has length 629 [2024-10-23 21:19:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:05,381 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 5155 transitions. [2024-10-23 21:19:05,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 5155 transitions. [2024-10-23 21:19:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-10-23 21:19:05,387 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:05,388 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:05,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:19:05,388 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:05,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -736954263, now seen corresponding path program 1 times [2024-10-23 21:19:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631139413] [2024-10-23 21:19:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 1525 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2024-10-23 21:19:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631139413] [2024-10-23 21:19:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631139413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:05,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:05,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662991450] [2024-10-23 21:19:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:05,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:05,882 INFO L87 Difference]: Start difference. First operand 4809 states and 5155 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:06,380 INFO L93 Difference]: Finished difference Result 9617 states and 10324 transitions. [2024-10-23 21:19:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 708 [2024-10-23 21:19:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:06,395 INFO L225 Difference]: With dead ends: 9617 [2024-10-23 21:19:06,395 INFO L226 Difference]: Without dead ends: 4987 [2024-10-23 21:19:06,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:06,401 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 102 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:06,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 240 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:19:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2024-10-23 21:19:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4453. [2024-10-23 21:19:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 4452 states have (on average 1.0700808625336926) internal successors, (4764), 4452 states have internal predecessors, (4764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 4764 transitions. [2024-10-23 21:19:06,477 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 4764 transitions. Word has length 708 [2024-10-23 21:19:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:06,478 INFO L471 AbstractCegarLoop]: Abstraction has 4453 states and 4764 transitions. [2024-10-23 21:19:06,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 4764 transitions. [2024-10-23 21:19:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2024-10-23 21:19:06,486 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:06,487 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:06,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:19:06,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:06,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash -336080810, now seen corresponding path program 1 times [2024-10-23 21:19:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541079060] [2024-10-23 21:19:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1289 proven. 155 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:19:07,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541079060] [2024-10-23 21:19:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541079060] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:07,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075564788] [2024-10-23 21:19:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:07,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:07,040 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) [2024-10-23 21:19:07,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:19:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:07,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:19:07,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1289 proven. 155 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:19:07,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:19:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1289 proven. 155 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-10-23 21:19:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075564788] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:19:08,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:19:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-23 21:19:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612841802] [2024-10-23 21:19:08,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:19:08,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 21:19:08,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:08,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 21:19:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:08,078 INFO L87 Difference]: Start difference. First operand 4453 states and 4764 transitions. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:09,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:09,006 INFO L93 Difference]: Finished difference Result 10151 states and 10908 transitions. [2024-10-23 21:19:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:19:09,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 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 784 [2024-10-23 21:19:09,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:09,020 INFO L225 Difference]: With dead ends: 10151 [2024-10-23 21:19:09,020 INFO L226 Difference]: Without dead ends: 5877 [2024-10-23 21:19:09,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1566 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:09,025 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:09,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 69 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:19:09,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5877 states. [2024-10-23 21:19:09,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5877 to 5165. [2024-10-23 21:19:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 1.0710689388071262) internal successors, (5531), 5164 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 5531 transitions. [2024-10-23 21:19:09,101 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 5531 transitions. Word has length 784 [2024-10-23 21:19:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:09,102 INFO L471 AbstractCegarLoop]: Abstraction has 5165 states and 5531 transitions. [2024-10-23 21:19:09,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 5531 transitions. [2024-10-23 21:19:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-10-23 21:19:09,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:09,112 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:09,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 21:19:09,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:09,313 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:09,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1635749033, now seen corresponding path program 1 times [2024-10-23 21:19:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597268066] [2024-10-23 21:19:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 1470 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-10-23 21:19:09,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:09,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597268066] [2024-10-23 21:19:09,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597268066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:09,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:09,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:09,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449479706] [2024-10-23 21:19:09,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:09,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:09,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:09,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:09,712 INFO L87 Difference]: Start difference. First operand 5165 states and 5531 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:10,128 INFO L93 Difference]: Finished difference Result 11219 states and 12107 transitions. [2024-10-23 21:19:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:10,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 856 [2024-10-23 21:19:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:10,139 INFO L225 Difference]: With dead ends: 11219 [2024-10-23 21:19:10,139 INFO L226 Difference]: Without dead ends: 6233 [2024-10-23 21:19:10,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:10,147 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 107 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:10,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 31 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2024-10-23 21:19:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 6233. [2024-10-23 21:19:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 6232 states have (on average 1.0749358151476252) internal successors, (6699), 6232 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 6699 transitions. [2024-10-23 21:19:10,228 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 6699 transitions. Word has length 856 [2024-10-23 21:19:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:10,229 INFO L471 AbstractCegarLoop]: Abstraction has 6233 states and 6699 transitions. [2024-10-23 21:19:10,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 6699 transitions. [2024-10-23 21:19:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2024-10-23 21:19:10,238 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:10,239 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:10,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:19:10,239 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:10,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash 62618474, now seen corresponding path program 1 times [2024-10-23 21:19:10,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:10,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106223437] [2024-10-23 21:19:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 1527 proven. 93 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2024-10-23 21:19:11,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106223437] [2024-10-23 21:19:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106223437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391862862] [2024-10-23 21:19:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:11,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:11,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:11,031 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) [2024-10-23 21:19:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:19:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:11,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:19:11,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2301 backedges. 1620 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2024-10-23 21:19:11,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391862862] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356021838] [2024-10-23 21:19:11,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:11,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:11,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:11,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:11,835 INFO L87 Difference]: Start difference. First operand 6233 states and 6699 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:12,254 INFO L93 Difference]: Finished difference Result 12643 states and 13590 transitions. [2024-10-23 21:19:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:12,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 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 874 [2024-10-23 21:19:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:12,265 INFO L225 Difference]: With dead ends: 12643 [2024-10-23 21:19:12,265 INFO L226 Difference]: Without dead ends: 6589 [2024-10-23 21:19:12,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:12,273 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:12,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6589 states. [2024-10-23 21:19:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6589 to 6411. [2024-10-23 21:19:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 1.074414976599064) internal successors, (6887), 6410 states have internal predecessors, (6887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 6887 transitions. [2024-10-23 21:19:12,380 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 6887 transitions. Word has length 874 [2024-10-23 21:19:12,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:12,381 INFO L471 AbstractCegarLoop]: Abstraction has 6411 states and 6887 transitions. [2024-10-23 21:19:12,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 6887 transitions. [2024-10-23 21:19:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2024-10-23 21:19:12,398 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:12,398 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:12,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 21:19:12,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 21:19:12,600 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:12,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1705605088, now seen corresponding path program 1 times [2024-10-23 21:19:12,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:12,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58907837] [2024-10-23 21:19:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:12,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 1757 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-10-23 21:19:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:13,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58907837] [2024-10-23 21:19:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58907837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:13,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:13,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139979907] [2024-10-23 21:19:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:13,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:13,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:13,401 INFO L87 Difference]: Start difference. First operand 6411 states and 6887 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:13,755 INFO L93 Difference]: Finished difference Result 12465 states and 13414 transitions. [2024-10-23 21:19:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 942 [2024-10-23 21:19:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:13,766 INFO L225 Difference]: With dead ends: 12465 [2024-10-23 21:19:13,766 INFO L226 Difference]: Without dead ends: 6233 [2024-10-23 21:19:13,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:13,773 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:13,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 224 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:13,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2024-10-23 21:19:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 6233. [2024-10-23 21:19:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6233 states, 6232 states have (on average 1.0672336328626444) internal successors, (6651), 6232 states have internal predecessors, (6651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 6651 transitions. [2024-10-23 21:19:13,843 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 6651 transitions. Word has length 942 [2024-10-23 21:19:13,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:13,844 INFO L471 AbstractCegarLoop]: Abstraction has 6233 states and 6651 transitions. [2024-10-23 21:19:13,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:13,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 6651 transitions. [2024-10-23 21:19:13,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2024-10-23 21:19:13,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:13,854 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:13,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:19:13,854 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:13,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -364411155, now seen corresponding path program 1 times [2024-10-23 21:19:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:13,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659250770] [2024-10-23 21:19:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:13,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1865 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2024-10-23 21:19:14,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659250770] [2024-10-23 21:19:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659250770] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:14,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693664523] [2024-10-23 21:19:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:14,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:14,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:14,880 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) [2024-10-23 21:19:14,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 21:19:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:15,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:19:15,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 1578 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2024-10-23 21:19:15,589 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:15,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693664523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:15,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:15,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-23 21:19:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855860888] [2024-10-23 21:19:15,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:15,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:15,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:15,594 INFO L87 Difference]: Start difference. First operand 6233 states and 6651 transitions. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:16,305 INFO L93 Difference]: Finished difference Result 13533 states and 14440 transitions. [2024-10-23 21:19:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 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 951 [2024-10-23 21:19:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:16,318 INFO L225 Difference]: With dead ends: 13533 [2024-10-23 21:19:16,318 INFO L226 Difference]: Without dead ends: 7479 [2024-10-23 21:19:16,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 950 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:16,327 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:16,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 51 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:19:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2024-10-23 21:19:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 6767. [2024-10-23 21:19:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6767 states, 6766 states have (on average 1.0647354419154595) internal successors, (7204), 6766 states have internal predecessors, (7204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 7204 transitions. [2024-10-23 21:19:16,410 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 7204 transitions. Word has length 951 [2024-10-23 21:19:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:16,411 INFO L471 AbstractCegarLoop]: Abstraction has 6767 states and 7204 transitions. [2024-10-23 21:19:16,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 7204 transitions. [2024-10-23 21:19:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2024-10-23 21:19:16,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:16,422 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:16,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 21:19:16,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 21:19:16,623 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:16,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1971281974, now seen corresponding path program 1 times [2024-10-23 21:19:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:16,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687774370] [2024-10-23 21:19:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3627 backedges. 1666 proven. 0 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2024-10-23 21:19:17,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687774370] [2024-10-23 21:19:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687774370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:17,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:17,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 21:19:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985336336] [2024-10-23 21:19:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:17,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 21:19:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 21:19:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:17,519 INFO L87 Difference]: Start difference. First operand 6767 states and 7204 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:18,215 INFO L93 Difference]: Finished difference Result 12943 states and 13770 transitions. [2024-10-23 21:19:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-23 21:19:18,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 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 994 [2024-10-23 21:19:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:18,225 INFO L225 Difference]: With dead ends: 12943 [2024-10-23 21:19:18,225 INFO L226 Difference]: Without dead ends: 6055 [2024-10-23 21:19:18,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:18,232 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:18,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 28 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:19:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2024-10-23 21:19:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 6055. [2024-10-23 21:19:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6054 states have (on average 1.0525272547076314) internal successors, (6372), 6054 states have internal predecessors, (6372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 6372 transitions. [2024-10-23 21:19:18,296 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 6372 transitions. Word has length 994 [2024-10-23 21:19:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:18,297 INFO L471 AbstractCegarLoop]: Abstraction has 6055 states and 6372 transitions. [2024-10-23 21:19:18,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 6372 transitions. [2024-10-23 21:19:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2024-10-23 21:19:18,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:18,307 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:18,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:19:18,307 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:18,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash -666273994, now seen corresponding path program 1 times [2024-10-23 21:19:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:18,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200473510] [2024-10-23 21:19:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3176 backedges. 2056 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2024-10-23 21:19:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200473510] [2024-10-23 21:19:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200473510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354668086] [2024-10-23 21:19:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:19,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:19,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:19,043 INFO L87 Difference]: Start difference. First operand 6055 states and 6372 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:19,395 INFO L93 Difference]: Finished difference Result 11931 states and 12564 transitions. [2024-10-23 21:19:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 1037 [2024-10-23 21:19:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:19,405 INFO L225 Difference]: With dead ends: 11931 [2024-10-23 21:19:19,406 INFO L226 Difference]: Without dead ends: 6055 [2024-10-23 21:19:19,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:19:19,414 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:19,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 216 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2024-10-23 21:19:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 5877. [2024-10-23 21:19:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5876 states have (on average 1.0474812797821647) internal successors, (6155), 5876 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 6155 transitions. [2024-10-23 21:19:19,519 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 6155 transitions. Word has length 1037 [2024-10-23 21:19:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:19,520 INFO L471 AbstractCegarLoop]: Abstraction has 5877 states and 6155 transitions. [2024-10-23 21:19:19,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 6155 transitions. [2024-10-23 21:19:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2024-10-23 21:19:19,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:19,531 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:19,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:19:19,531 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:19,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1920442845, now seen corresponding path program 1 times [2024-10-23 21:19:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544930298] [2024-10-23 21:19:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3504 backedges. 1611 proven. 95 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2024-10-23 21:19:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544930298] [2024-10-23 21:19:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544930298] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623444169] [2024-10-23 21:19:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:20,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:20,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:20,404 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) [2024-10-23 21:19:20,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 21:19:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:20,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:19:20,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3504 backedges. 1706 proven. 0 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2024-10-23 21:19:21,000 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:21,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623444169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:21,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:21,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:21,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880451901] [2024-10-23 21:19:21,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:21,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:21,004 INFO L87 Difference]: Start difference. First operand 5877 states and 6155 transitions. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:21,384 INFO L93 Difference]: Finished difference Result 11753 states and 12309 transitions. [2024-10-23 21:19:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:21,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 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 1111 [2024-10-23 21:19:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:21,393 INFO L225 Difference]: With dead ends: 11753 [2024-10-23 21:19:21,393 INFO L226 Difference]: Without dead ends: 6055 [2024-10-23 21:19:21,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:21,399 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:21,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 218 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2024-10-23 21:19:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 5699. [2024-10-23 21:19:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.035977535977536) internal successors, (5903), 5698 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 5903 transitions. [2024-10-23 21:19:21,459 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 5903 transitions. Word has length 1111 [2024-10-23 21:19:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:21,460 INFO L471 AbstractCegarLoop]: Abstraction has 5699 states and 5903 transitions. [2024-10-23 21:19:21,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 5903 transitions. [2024-10-23 21:19:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1662 [2024-10-23 21:19:21,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:21,480 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:21,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 21:19:21,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:21,681 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:21,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash -600783802, now seen corresponding path program 1 times [2024-10-23 21:19:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:21,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782685703] [2024-10-23 21:19:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8507 backedges. 1838 proven. 1045 refuted. 0 times theorem prover too weak. 5624 trivial. 0 not checked. [2024-10-23 21:19:22,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782685703] [2024-10-23 21:19:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782685703] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572265944] [2024-10-23 21:19:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:22,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:22,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:22,583 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) [2024-10-23 21:19:22,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 21:19:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:22,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:19:22,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8507 backedges. 2883 proven. 0 refuted. 0 times theorem prover too weak. 5624 trivial. 0 not checked. [2024-10-23 21:19:23,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572265944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:23,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:19:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363061743] [2024-10-23 21:19:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:23,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:23,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:23,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:23,206 INFO L87 Difference]: Start difference. First operand 5699 states and 5903 transitions. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:23,582 INFO L93 Difference]: Finished difference Result 12287 states and 12705 transitions. [2024-10-23 21:19:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 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 1661 [2024-10-23 21:19:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:23,589 INFO L225 Difference]: With dead ends: 12287 [2024-10-23 21:19:23,589 INFO L226 Difference]: Without dead ends: 4275 [2024-10-23 21:19:23,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1660 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:19:23,594 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:23,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 228 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2024-10-23 21:19:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4097. [2024-10-23 21:19:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 1.025390625) internal successors, (4200), 4096 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 4200 transitions. [2024-10-23 21:19:23,632 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 4200 transitions. Word has length 1661 [2024-10-23 21:19:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:23,633 INFO L471 AbstractCegarLoop]: Abstraction has 4097 states and 4200 transitions. [2024-10-23 21:19:23,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 4200 transitions. [2024-10-23 21:19:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2024-10-23 21:19:23,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:23,653 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:23,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 21:19:23,854 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,SelfDestructingSolverStorable21 [2024-10-23 21:19:23,854 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:23,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1499889142, now seen corresponding path program 1 times [2024-10-23 21:19:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:23,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810465725] [2024-10-23 21:19:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:23,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 2874 proven. 0 refuted. 0 times theorem prover too weak. 6769 trivial. 0 not checked. [2024-10-23 21:19:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:24,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810465725] [2024-10-23 21:19:24,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810465725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:24,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:24,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:24,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166026480] [2024-10-23 21:19:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:24,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:24,761 INFO L87 Difference]: Start difference. First operand 4097 states and 4200 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:25,143 INFO L93 Difference]: Finished difference Result 8037 states and 8244 transitions. [2024-10-23 21:19:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 1714 [2024-10-23 21:19:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:25,147 INFO L225 Difference]: With dead ends: 8037 [2024-10-23 21:19:25,147 INFO L226 Difference]: Without dead ends: 4275 [2024-10-23 21:19:25,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:25,149 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:25,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2024-10-23 21:19:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4097. [2024-10-23 21:19:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4097 states, 4096 states have (on average 1.024169921875) internal successors, (4195), 4096 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 4195 transitions. [2024-10-23 21:19:25,179 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 4195 transitions. Word has length 1714 [2024-10-23 21:19:25,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:25,180 INFO L471 AbstractCegarLoop]: Abstraction has 4097 states and 4195 transitions. [2024-10-23 21:19:25,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 4195 transitions. [2024-10-23 21:19:25,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2024-10-23 21:19:25,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:25,200 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:25,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:19:25,201 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:25,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1675212902, now seen corresponding path program 1 times [2024-10-23 21:19:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:25,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180874212] [2024-10-23 21:19:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9783 backedges. 1707 proven. 0 refuted. 0 times theorem prover too weak. 8076 trivial. 0 not checked. [2024-10-23 21:19:27,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:27,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180874212] [2024-10-23 21:19:27,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180874212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:27,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:27,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:19:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848868451] [2024-10-23 21:19:27,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:27,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:19:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:27,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:19:27,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:19:27,634 INFO L87 Difference]: Start difference. First operand 4097 states and 4195 transitions. Second operand has 5 states, 5 states have (on average 64.2) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:28,196 INFO L93 Difference]: Finished difference Result 9274 states and 9529 transitions. [2024-10-23 21:19:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 21:19:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 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 1732 [2024-10-23 21:19:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:28,201 INFO L225 Difference]: With dead ends: 9274 [2024-10-23 21:19:28,201 INFO L226 Difference]: Without dead ends: 5521 [2024-10-23 21:19:28,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:19:28,204 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 138 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:28,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 17 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 21:19:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5521 states. [2024-10-23 21:19:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5521 to 4809. [2024-10-23 21:19:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0280782029950084) internal successors, (4943), 4808 states have internal predecessors, (4943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4943 transitions. [2024-10-23 21:19:28,241 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4943 transitions. Word has length 1732 [2024-10-23 21:19:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:28,242 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 4943 transitions. [2024-10-23 21:19:28,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.2) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4943 transitions. [2024-10-23 21:19:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1738 [2024-10-23 21:19:28,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:28,262 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:28,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-23 21:19:28,262 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:28,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:28,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1158885134, now seen corresponding path program 1 times [2024-10-23 21:19:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:28,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692569814] [2024-10-23 21:19:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:28,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9838 backedges. 657 proven. 0 refuted. 0 times theorem prover too weak. 9181 trivial. 0 not checked. [2024-10-23 21:19:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:29,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692569814] [2024-10-23 21:19:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692569814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:29,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:29,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:19:29,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025814103] [2024-10-23 21:19:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:29,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:29,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:29,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:29,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:29,173 INFO L87 Difference]: Start difference. First operand 4809 states and 4943 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:29,560 INFO L93 Difference]: Finished difference Result 9451 states and 9720 transitions. [2024-10-23 21:19:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:29,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 1737 [2024-10-23 21:19:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:29,564 INFO L225 Difference]: With dead ends: 9451 [2024-10-23 21:19:29,564 INFO L226 Difference]: Without dead ends: 4987 [2024-10-23 21:19:29,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:29,567 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:29,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2024-10-23 21:19:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 4809. [2024-10-23 21:19:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.026830282861897) internal successors, (4937), 4808 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4937 transitions. [2024-10-23 21:19:29,613 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4937 transitions. Word has length 1737 [2024-10-23 21:19:29,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:29,615 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 4937 transitions. [2024-10-23 21:19:29,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4937 transitions. [2024-10-23 21:19:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1903 [2024-10-23 21:19:29,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:29,634 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:29,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-23 21:19:29,635 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:29,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -479674386, now seen corresponding path program 1 times [2024-10-23 21:19:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414283168] [2024-10-23 21:19:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11509 backedges. 2425 proven. 812 refuted. 0 times theorem prover too weak. 8272 trivial. 0 not checked. [2024-10-23 21:19:31,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:31,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414283168] [2024-10-23 21:19:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414283168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:19:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360025112] [2024-10-23 21:19:31,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:31,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:19:31,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:19:31,077 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) [2024-10-23 21:19:31,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 21:19:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:31,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:19:31,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:19:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11509 backedges. 3237 proven. 0 refuted. 0 times theorem prover too weak. 8272 trivial. 0 not checked. [2024-10-23 21:19:31,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:19:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360025112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:31,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:19:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:19:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593528606] [2024-10-23 21:19:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:31,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:19:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:19:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:31,866 INFO L87 Difference]: Start difference. First operand 4809 states and 4937 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:32,166 INFO L93 Difference]: Finished difference Result 9439 states and 9696 transitions. [2024-10-23 21:19:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:19:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 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 1902 [2024-10-23 21:19:32,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:32,171 INFO L225 Difference]: With dead ends: 9439 [2024-10-23 21:19:32,171 INFO L226 Difference]: Without dead ends: 4809 [2024-10-23 21:19:32,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1906 GetRequests, 1901 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:19:32,173 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 53 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:32,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 214 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 21:19:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2024-10-23 21:19:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4809. [2024-10-23 21:19:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.0259983361064893) internal successors, (4933), 4808 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 4933 transitions. [2024-10-23 21:19:32,210 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 4933 transitions. Word has length 1902 [2024-10-23 21:19:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:32,211 INFO L471 AbstractCegarLoop]: Abstraction has 4809 states and 4933 transitions. [2024-10-23 21:19:32,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 4933 transitions. [2024-10-23 21:19:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2035 [2024-10-23 21:19:32,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:19:32,228 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:32,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 21:19:32,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-23 21:19:32,429 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:19:32,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:19:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 78651299, now seen corresponding path program 1 times [2024-10-23 21:19:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:19:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581200541] [2024-10-23 21:19:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:19:32,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:19:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:19:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13209 backedges. 1965 proven. 0 refuted. 0 times theorem prover too weak. 11244 trivial. 0 not checked. [2024-10-23 21:19:34,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:19:34,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581200541] [2024-10-23 21:19:34,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581200541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:19:34,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:19:34,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:19:34,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738800223] [2024-10-23 21:19:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:19:34,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:19:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:19:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:19:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:34,833 INFO L87 Difference]: Start difference. First operand 4809 states and 4933 transitions. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:19:35,208 INFO L93 Difference]: Finished difference Result 9094 states and 9337 transitions. [2024-10-23 21:19:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:19:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 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 2034 [2024-10-23 21:19:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:19:35,209 INFO L225 Difference]: With dead ends: 9094 [2024-10-23 21:19:35,209 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 21:19:35,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:19:35,213 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 107 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:19:35,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 12 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 21:19:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 21:19:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 21:19:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 21:19:35,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2034 [2024-10-23 21:19:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:19:35,214 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 21:19:35,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:19:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 21:19:35,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 21:19:35,217 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 21:19:35,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-23 21:19:35,221 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:19:35,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 21:19:36,410 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 21:19:36,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:19:36 BoogieIcfgContainer [2024-10-23 21:19:36,440 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 21:19:36,440 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 21:19:36,440 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 21:19:36,441 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 21:19:36,441 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:18:48" (3/4) ... [2024-10-23 21:19:36,443 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 21:19:36,468 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-23 21:19:36,469 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-23 21:19:36,470 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 21:19:36,471 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 21:19:36,646 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 21:19:36,647 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 21:19:36,647 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 21:19:36,647 INFO L158 Benchmark]: Toolchain (without parser) took 50546.79ms. Allocated memory was 132.1MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 85.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 407.5MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,648 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 98.6MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 21:19:36,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.16ms. Allocated memory is still 132.1MB. Free memory was 85.1MB in the beginning and 86.4MB in the end (delta: -1.3MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.61ms. Allocated memory is still 132.1MB. Free memory was 86.4MB in the beginning and 76.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,648 INFO L158 Benchmark]: Boogie Preprocessor took 118.08ms. Allocated memory is still 132.1MB. Free memory was 76.8MB in the beginning and 64.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,648 INFO L158 Benchmark]: RCFGBuilder took 1561.31ms. Allocated memory was 132.1MB in the beginning and 190.8MB in the end (delta: 58.7MB). Free memory was 64.0MB in the beginning and 92.6MB in the end (delta: -28.6MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,648 INFO L158 Benchmark]: TraceAbstraction took 47925.06ms. Allocated memory was 190.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 91.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 967.1MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,649 INFO L158 Benchmark]: Witness Printer took 206.59ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-23 21:19:36,650 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 98.6MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.16ms. Allocated memory is still 132.1MB. Free memory was 85.1MB in the beginning and 86.4MB in the end (delta: -1.3MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.61ms. Allocated memory is still 132.1MB. Free memory was 86.4MB in the beginning and 76.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.08ms. Allocated memory is still 132.1MB. Free memory was 76.8MB in the beginning and 64.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1561.31ms. Allocated memory was 132.1MB in the beginning and 190.8MB in the end (delta: 58.7MB). Free memory was 64.0MB in the beginning and 92.6MB in the end (delta: -28.6MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * TraceAbstraction took 47925.06ms. Allocated memory was 190.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 91.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 967.1MB. Max. memory is 16.1GB. * Witness Printer took 206.59ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 161]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.6s, OverallIterations: 27, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2233 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2233 mSDsluCounter, 2863 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 1500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15421 IncrementalHoareTripleChecker+Invalid, 16921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1500 mSolverCounterUnsat, 2698 mSDtfsCounter, 15421 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9669 GetRequests, 9597 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6767occurred in iteration=18, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 27 MinimizatonAttempts, 5874 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 32497 NumberOfCodeBlocks, 32497 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 33244 ConstructedInterpolants, 0 QuantifiedInterpolants, 88792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10750 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 37 InterpolantComputations, 26 PerfectInterpolantSequences, 127061/129979 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((((((((((((((((a24 == 1) && (7 == a21)) && (((long long) 49 + a12) <= 0)) && (a15 == 8)) || ((((a24 == 1) && (0 <= ((long long) a12 + 42))) && (a12 <= 586307)) && (8 <= a15))) || ((((a24 == 1) && (7 == a21)) && (0 <= ((long long) a12 + 42))) && (a12 <= 599999))) || ((((a24 == 1) && (a21 == 10)) && (81 <= a12)) && (7 == a15))) || (((a21 == 8) && (a24 == 1)) && (a15 <= 7))) || (((a21 <= 6) && (a15 <= 7)) && (((long long) 49 + a12) <= 0))) || ((((a24 == 1) && (a21 == 9)) && (a15 <= 7)) && (7 != a15))) || ((((a24 == 1) && (a15 <= 8)) && (a21 == 9)) && (((long long) 49 + a12) <= 0))) || (((a24 == 1) && (5 == a15)) && (a21 == 6))) || (((a24 == 1) && (((long long) 397559 + a12) <= 0)) && (a21 == 10))) || ((((a24 == 1) && (a21 <= 6)) && (a15 <= 7)) && (0 <= ((long long) a12 + 42)))) || ((((a24 == 1) && (10 <= a21)) && (a12 <= 599999)) && (8 <= a15))) || ((((a24 == 1) && (a21 == 9)) && (a15 <= 7)) && (0 <= ((long long) a12 + 42)))) || (((a24 == 1) && (7 == a21)) && (a15 <= 7))) || (((a21 == 8) && (a24 == 1)) && (a12 <= 599999))) || ((((a12 <= 73282) && (a24 == 1)) && (7 != a15)) && (10 <= a21))) || ((((a24 == 1) && (a21 == 9)) && (0 <= ((long long) a12 + 42))) && (a12 <= 599999))) RESULT: Ultimate proved your program to be correct! [2024-10-23 21:19:36,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE