./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem15_label17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem15_label17.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 42b374d0017cdae74eebab609ba5393370e8c987522e66a98f57a11c3f33505a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:40:10,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:40:10,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:40:10,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:40:10,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:40:11,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:40:11,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:40:11,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:40:11,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:40:11,013 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:40:11,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:40:11,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:40:11,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:40:11,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:40:11,016 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:40:11,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:40:11,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:40:11,017 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:40:11,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:40:11,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:40:11,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:40:11,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:40:11,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:40:11,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:40:11,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:40:11,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:40:11,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:40:11,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:40:11,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:40:11,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:40:11,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:40:11,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:40:11,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:40:11,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:40:11,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:40:11,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:40:11,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:40:11,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:40:11,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:40:11,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:40:11,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:40:11,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:40:11,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b374d0017cdae74eebab609ba5393370e8c987522e66a98f57a11c3f33505a [2024-11-18 10:40:11,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:40:11,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:40:11,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:40:11,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:40:11,252 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:40:11,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem15_label17.c [2024-11-18 10:40:12,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:40:12,776 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:40:12,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c [2024-11-18 10:40:12,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adca89d8/1ee71060dee0422785f570c0bf26953b/FLAG5af8f6215 [2024-11-18 10:40:12,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1adca89d8/1ee71060dee0422785f570c0bf26953b [2024-11-18 10:40:12,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:40:12,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:40:12,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:40:12,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:40:12,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:40:12,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:40:12" (1/1) ... [2024-11-18 10:40:12,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd6ad8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:12, skipping insertion in model container [2024-11-18 10:40:12,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:40:12" (1/1) ... [2024-11-18 10:40:12,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:40:13,101 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c[7664,7677] [2024-11-18 10:40:13,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:40:13,374 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:40:13,398 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c[7664,7677] [2024-11-18 10:40:13,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:40:13,599 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:40:13,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13 WrapperNode [2024-11-18 10:40:13,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:40:13,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:40:13,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:40:13,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:40:13,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,766 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-11-18 10:40:13,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:40:13,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:40:13,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:40:13,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:40:13,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,857 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 10:40:13,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:13,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:14,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:40:14,002 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:40:14,002 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:40:14,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:40:14,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (1/1) ... [2024-11-18 10:40:14,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:40:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:14,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 10:40:14,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 10:40:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:40:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:40:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:40:14,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:40:14,115 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:40:14,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:40:15,823 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-11-18 10:40:15,824 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:40:15,849 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:40:15,849 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:40:15,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:40:15 BoogieIcfgContainer [2024-11-18 10:40:15,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:40:15,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:40:15,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:40:15,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:40:15,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:40:12" (1/3) ... [2024-11-18 10:40:15,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ac636a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:40:15, skipping insertion in model container [2024-11-18 10:40:15,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:40:13" (2/3) ... [2024-11-18 10:40:15,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ac636a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:40:15, skipping insertion in model container [2024-11-18 10:40:15,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:40:15" (3/3) ... [2024-11-18 10:40:15,859 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2024-11-18 10:40:15,873 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:40:15,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:40:15,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:40:15,940 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;@4a157495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:40:15,940 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:40:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:15,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 10:40:15,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:15,951 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:15,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:15,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2024-11-18 10:40:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003219427] [2024-11-18 10:40:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:40:16,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:16,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003219427] [2024-11-18 10:40:16,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003219427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:16,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:16,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:40:16,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835907886] [2024-11-18 10:40:16,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:16,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:16,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:16,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:16,275 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:18,002 INFO L93 Difference]: Finished difference Result 1191 states and 2157 transitions. [2024-11-18 10:40:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:18,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-18 10:40:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:18,015 INFO L225 Difference]: With dead ends: 1191 [2024-11-18 10:40:18,015 INFO L226 Difference]: Without dead ends: 688 [2024-11-18 10:40:18,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:18,020 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 308 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:18,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 230 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 10:40:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-18 10:40:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 680. [2024-11-18 10:40:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.609720176730486) internal successors, (1093), 679 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1093 transitions. [2024-11-18 10:40:18,070 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1093 transitions. Word has length 63 [2024-11-18 10:40:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:18,071 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1093 transitions. [2024-11-18 10:40:18,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1093 transitions. [2024-11-18 10:40:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 10:40:18,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:18,074 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:40:18,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:40:18,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:18,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1963228353, now seen corresponding path program 1 times [2024-11-18 10:40:18,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144413134] [2024-11-18 10:40:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:40:18,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144413134] [2024-11-18 10:40:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144413134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:18,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:18,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:40:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075247259] [2024-11-18 10:40:18,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:18,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:18,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:18,269 INFO L87 Difference]: Start difference. First operand 680 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:19,415 INFO L93 Difference]: Finished difference Result 1964 states and 3171 transitions. [2024-11-18 10:40:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-18 10:40:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:19,423 INFO L225 Difference]: With dead ends: 1964 [2024-11-18 10:40:19,424 INFO L226 Difference]: Without dead ends: 1286 [2024-11-18 10:40:19,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:19,426 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:19,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 360 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:40:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2024-11-18 10:40:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1281. [2024-11-18 10:40:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3953125) internal successors, (1786), 1280 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1786 transitions. [2024-11-18 10:40:19,470 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1786 transitions. Word has length 131 [2024-11-18 10:40:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:19,471 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1786 transitions. [2024-11-18 10:40:19,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1786 transitions. [2024-11-18 10:40:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 10:40:19,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:19,477 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:40:19,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:40:19,478 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:19,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1160975019, now seen corresponding path program 1 times [2024-11-18 10:40:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:19,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411915716] [2024-11-18 10:40:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:40:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411915716] [2024-11-18 10:40:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411915716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:40:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068788587] [2024-11-18 10:40:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:19,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:19,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:19,761 INFO L87 Difference]: Start difference. First operand 1281 states and 1786 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:21,036 INFO L93 Difference]: Finished difference Result 2859 states and 3905 transitions. [2024-11-18 10:40:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-11-18 10:40:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:21,041 INFO L225 Difference]: With dead ends: 2859 [2024-11-18 10:40:21,041 INFO L226 Difference]: Without dead ends: 1580 [2024-11-18 10:40:21,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:21,043 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 225 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:21,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 359 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 10:40:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2024-11-18 10:40:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2024-11-18 10:40:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1579 states have (on average 1.3242558581380621) internal successors, (2091), 1579 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2091 transitions. [2024-11-18 10:40:21,066 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2091 transitions. Word has length 139 [2024-11-18 10:40:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:21,066 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2091 transitions. [2024-11-18 10:40:21,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2091 transitions. [2024-11-18 10:40:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-18 10:40:21,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:21,071 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:21,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:40:21,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:21,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 75098474, now seen corresponding path program 1 times [2024-11-18 10:40:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937173367] [2024-11-18 10:40:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-18 10:40:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937173367] [2024-11-18 10:40:21,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937173367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:21,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:21,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:21,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290982095] [2024-11-18 10:40:21,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:21,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:21,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:21,260 INFO L87 Difference]: Start difference. First operand 1580 states and 2091 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:22,356 INFO L93 Difference]: Finished difference Result 4065 states and 5551 transitions. [2024-11-18 10:40:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:22,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 230 [2024-11-18 10:40:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:22,365 INFO L225 Difference]: With dead ends: 4065 [2024-11-18 10:40:22,365 INFO L226 Difference]: Without dead ends: 2786 [2024-11-18 10:40:22,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:22,368 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 265 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:22,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 637 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:40:22,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2024-11-18 10:40:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2024-11-18 10:40:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2785 states have (on average 1.2204667863554757) internal successors, (3399), 2785 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3399 transitions. [2024-11-18 10:40:22,409 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3399 transitions. Word has length 230 [2024-11-18 10:40:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:22,410 INFO L471 AbstractCegarLoop]: Abstraction has 2786 states and 3399 transitions. [2024-11-18 10:40:22,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3399 transitions. [2024-11-18 10:40:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-18 10:40:22,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:22,413 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, 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] [2024-11-18 10:40:22,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:40:22,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:22,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1852515434, now seen corresponding path program 1 times [2024-11-18 10:40:22,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:22,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379330212] [2024-11-18 10:40:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:22,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-18 10:40:22,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:22,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379330212] [2024-11-18 10:40:22,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379330212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:22,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:22,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:40:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199706070] [2024-11-18 10:40:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:22,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:22,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:22,643 INFO L87 Difference]: Start difference. First operand 2786 states and 3399 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:23,788 INFO L93 Difference]: Finished difference Result 6472 states and 8164 transitions. [2024-11-18 10:40:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:23,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 236 [2024-11-18 10:40:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:23,798 INFO L225 Difference]: With dead ends: 6472 [2024-11-18 10:40:23,798 INFO L226 Difference]: Without dead ends: 3987 [2024-11-18 10:40:23,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:23,803 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 220 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:23,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 364 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:40:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2024-11-18 10:40:23,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 3686. [2024-11-18 10:40:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 1.1959294436906378) internal successors, (4407), 3685 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4407 transitions. [2024-11-18 10:40:23,854 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4407 transitions. Word has length 236 [2024-11-18 10:40:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:23,854 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 4407 transitions. [2024-11-18 10:40:23,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4407 transitions. [2024-11-18 10:40:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-18 10:40:23,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:23,858 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:23,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:40:23,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:23,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1238094804, now seen corresponding path program 1 times [2024-11-18 10:40:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180987845] [2024-11-18 10:40:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:23,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:40:24,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:24,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180987845] [2024-11-18 10:40:24,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180987845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:24,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:24,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893832492] [2024-11-18 10:40:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:24,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:24,128 INFO L87 Difference]: Start difference. First operand 3686 states and 4407 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:25,297 INFO L93 Difference]: Finished difference Result 8279 states and 10190 transitions. [2024-11-18 10:40:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:25,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 345 [2024-11-18 10:40:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:25,311 INFO L225 Difference]: With dead ends: 8279 [2024-11-18 10:40:25,311 INFO L226 Difference]: Without dead ends: 4894 [2024-11-18 10:40:25,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:25,317 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 267 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:25,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 603 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:40:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2024-11-18 10:40:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4592. [2024-11-18 10:40:25,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4591 states have (on average 1.184055761272054) internal successors, (5436), 4591 states have internal predecessors, (5436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:25,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 5436 transitions. [2024-11-18 10:40:25,368 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 5436 transitions. Word has length 345 [2024-11-18 10:40:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:25,369 INFO L471 AbstractCegarLoop]: Abstraction has 4592 states and 5436 transitions. [2024-11-18 10:40:25,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 5436 transitions. [2024-11-18 10:40:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-18 10:40:25,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:25,373 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:25,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:40:25,373 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:25,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash 207476629, now seen corresponding path program 1 times [2024-11-18 10:40:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:25,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580130343] [2024-11-18 10:40:25,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:25,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-18 10:40:25,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:25,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580130343] [2024-11-18 10:40:25,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580130343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:25,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:25,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:25,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488751051] [2024-11-18 10:40:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:25,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:25,703 INFO L87 Difference]: Start difference. First operand 4592 states and 5436 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:26,908 INFO L93 Difference]: Finished difference Result 10079 states and 12234 transitions. [2024-11-18 10:40:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 [2024-11-18 10:40:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:26,922 INFO L225 Difference]: With dead ends: 10079 [2024-11-18 10:40:26,922 INFO L226 Difference]: Without dead ends: 5788 [2024-11-18 10:40:26,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:26,928 INFO L432 NwaCegarLoop]: 580 mSDtfsCounter, 265 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:26,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 619 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:40:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2024-11-18 10:40:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5784. [2024-11-18 10:40:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 1.1663496455127096) internal successors, (6745), 5783 states have internal predecessors, (6745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 6745 transitions. [2024-11-18 10:40:26,989 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 6745 transitions. Word has length 350 [2024-11-18 10:40:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:26,990 INFO L471 AbstractCegarLoop]: Abstraction has 5784 states and 6745 transitions. [2024-11-18 10:40:26,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 6745 transitions. [2024-11-18 10:40:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-18 10:40:26,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:26,997 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:26,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:40:26,997 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:26,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash -934046099, now seen corresponding path program 1 times [2024-11-18 10:40:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929127595] [2024-11-18 10:40:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 426 proven. 39 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 10:40:27,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929127595] [2024-11-18 10:40:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929127595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:27,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554348875] [2024-11-18 10:40:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:27,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:27,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:27,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:40:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:27,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:40:27,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-18 10:40:27,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:40:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554348875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:27,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:40:27,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:40:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359525453] [2024-11-18 10:40:27,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:27,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:40:27,888 INFO L87 Difference]: Start difference. First operand 5784 states and 6745 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:29,246 INFO L93 Difference]: Finished difference Result 14556 states and 17044 transitions. [2024-11-18 10:40:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:29,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2024-11-18 10:40:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:29,272 INFO L225 Difference]: With dead ends: 14556 [2024-11-18 10:40:29,272 INFO L226 Difference]: Without dead ends: 9073 [2024-11-18 10:40:29,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:40:29,277 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 148 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:29,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 315 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 10:40:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2024-11-18 10:40:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 7578. [2024-11-18 10:40:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7578 states, 7577 states have (on average 1.1483436716378514) internal successors, (8701), 7577 states have internal predecessors, (8701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7578 states to 7578 states and 8701 transitions. [2024-11-18 10:40:29,369 INFO L78 Accepts]: Start accepts. Automaton has 7578 states and 8701 transitions. Word has length 514 [2024-11-18 10:40:29,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:29,369 INFO L471 AbstractCegarLoop]: Abstraction has 7578 states and 8701 transitions. [2024-11-18 10:40:29,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7578 states and 8701 transitions. [2024-11-18 10:40:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-18 10:40:29,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:29,378 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:29,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:40:29,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:29,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:29,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2057557162, now seen corresponding path program 1 times [2024-11-18 10:40:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:29,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419207289] [2024-11-18 10:40:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 531 proven. 39 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-18 10:40:30,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:30,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419207289] [2024-11-18 10:40:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419207289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:30,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613068038] [2024-11-18 10:40:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:30,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:30,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:30,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:40:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:30,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:40:30,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-18 10:40:30,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:40:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613068038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:30,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:40:30,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:40:30,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111886152] [2024-11-18 10:40:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:30,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:40:30,305 INFO L87 Difference]: Start difference. First operand 7578 states and 8701 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:31,283 INFO L93 Difference]: Finished difference Result 17246 states and 20051 transitions. [2024-11-18 10:40:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:31,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 547 [2024-11-18 10:40:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:31,329 INFO L225 Difference]: With dead ends: 17246 [2024-11-18 10:40:31,329 INFO L226 Difference]: Without dead ends: 9969 [2024-11-18 10:40:31,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:40:31,334 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 354 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:31,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 447 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:40:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2024-11-18 10:40:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9969. [2024-11-18 10:40:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.1498796147672552) internal successors, (11462), 9968 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 11462 transitions. [2024-11-18 10:40:31,421 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 11462 transitions. Word has length 547 [2024-11-18 10:40:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:31,421 INFO L471 AbstractCegarLoop]: Abstraction has 9969 states and 11462 transitions. [2024-11-18 10:40:31,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 11462 transitions. [2024-11-18 10:40:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-11-18 10:40:31,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:31,426 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:31,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 10:40:31,626 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 [2024-11-18 10:40:31,629 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:31,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:31,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1484596940, now seen corresponding path program 1 times [2024-11-18 10:40:31,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:31,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692760075] [2024-11-18 10:40:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:31,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-18 10:40:32,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:32,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692760075] [2024-11-18 10:40:32,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692760075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:32,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:32,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:32,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559945094] [2024-11-18 10:40:32,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:32,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:32,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:32,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:32,017 INFO L87 Difference]: Start difference. First operand 9969 states and 11462 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:33,102 INFO L93 Difference]: Finished difference Result 24136 states and 28000 transitions. [2024-11-18 10:40:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 551 [2024-11-18 10:40:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:33,122 INFO L225 Difference]: With dead ends: 24136 [2024-11-18 10:40:33,122 INFO L226 Difference]: Without dead ends: 14468 [2024-11-18 10:40:33,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:33,132 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 246 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:33,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 621 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:40:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14468 states. [2024-11-18 10:40:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14468 to 14158. [2024-11-18 10:40:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14158 states, 14157 states have (on average 1.1347743165924984) internal successors, (16065), 14157 states have internal predecessors, (16065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14158 states to 14158 states and 16065 transitions. [2024-11-18 10:40:33,267 INFO L78 Accepts]: Start accepts. Automaton has 14158 states and 16065 transitions. Word has length 551 [2024-11-18 10:40:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:33,268 INFO L471 AbstractCegarLoop]: Abstraction has 14158 states and 16065 transitions. [2024-11-18 10:40:33,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 14158 states and 16065 transitions. [2024-11-18 10:40:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-18 10:40:33,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:33,275 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:33,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:40:33,276 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:33,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:33,276 INFO L85 PathProgramCache]: Analyzing trace with hash 94161064, now seen corresponding path program 1 times [2024-11-18 10:40:33,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:33,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221662749] [2024-11-18 10:40:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:33,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 688 proven. 39 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2024-11-18 10:40:33,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:33,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221662749] [2024-11-18 10:40:33,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221662749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:33,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978181199] [2024-11-18 10:40:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:33,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:33,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:33,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:40:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:34,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:40:34,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:34,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-18 10:40:34,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:40:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978181199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:34,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:40:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-18 10:40:34,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489013509] [2024-11-18 10:40:34,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:34,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:34,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:34,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:40:34,127 INFO L87 Difference]: Start difference. First operand 14158 states and 16065 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:35,086 INFO L93 Difference]: Finished difference Result 27712 states and 31488 transitions. [2024-11-18 10:40:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 626 [2024-11-18 10:40:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:35,103 INFO L225 Difference]: With dead ends: 27712 [2024-11-18 10:40:35,103 INFO L226 Difference]: Without dead ends: 13855 [2024-11-18 10:40:35,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:40:35,115 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 252 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:35,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 604 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:40:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13855 states. [2024-11-18 10:40:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13855 to 13555. [2024-11-18 10:40:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13555 states, 13554 states have (on average 1.0829275490630073) internal successors, (14678), 13554 states have internal predecessors, (14678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13555 states to 13555 states and 14678 transitions. [2024-11-18 10:40:35,227 INFO L78 Accepts]: Start accepts. Automaton has 13555 states and 14678 transitions. Word has length 626 [2024-11-18 10:40:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:35,227 INFO L471 AbstractCegarLoop]: Abstraction has 13555 states and 14678 transitions. [2024-11-18 10:40:35,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13555 states and 14678 transitions. [2024-11-18 10:40:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2024-11-18 10:40:35,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:35,235 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:40:35,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 10:40:35,435 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 [2024-11-18 10:40:35,435 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:35,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1632467113, now seen corresponding path program 1 times [2024-11-18 10:40:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938798441] [2024-11-18 10:40:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-18 10:40:35,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938798441] [2024-11-18 10:40:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938798441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:35,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275408695] [2024-11-18 10:40:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:35,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:35,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:35,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:40:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:36,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 10:40:36,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-18 10:40:36,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:40:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-18 10:40:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275408695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:40:37,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:40:37,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-18 10:40:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653756391] [2024-11-18 10:40:37,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:40:37,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 10:40:37,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 10:40:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:40:37,269 INFO L87 Difference]: Start difference. First operand 13555 states and 14678 transitions. Second operand has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 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) [2024-11-18 10:40:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:42,342 INFO L93 Difference]: Finished difference Result 35143 states and 38047 transitions. [2024-11-18 10:40:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 10:40:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 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) Word has length 627 [2024-11-18 10:40:42,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:42,367 INFO L225 Difference]: With dead ends: 35143 [2024-11-18 10:40:42,367 INFO L226 Difference]: Without dead ends: 15948 [2024-11-18 10:40:42,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-18 10:40:42,383 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 3099 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 5500 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 5500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:42,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 234 Invalid, 6187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 5500 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-18 10:40:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15948 states. [2024-11-18 10:40:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15948 to 12357. [2024-11-18 10:40:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 12356 states have (on average 1.0382000647458725) internal successors, (12828), 12356 states have internal predecessors, (12828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 12828 transitions. [2024-11-18 10:40:42,572 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 12828 transitions. Word has length 627 [2024-11-18 10:40:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:42,573 INFO L471 AbstractCegarLoop]: Abstraction has 12357 states and 12828 transitions. [2024-11-18 10:40:42,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 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) [2024-11-18 10:40:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 12828 transitions. [2024-11-18 10:40:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2024-11-18 10:40:42,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:42,584 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:42,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 10:40:42,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:42,785 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1939287860, now seen corresponding path program 1 times [2024-11-18 10:40:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66867108] [2024-11-18 10:40:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 266 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:40:43,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:43,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66867108] [2024-11-18 10:40:43,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66867108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:43,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379201555] [2024-11-18 10:40:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:43,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:43,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:43,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:43,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:40:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:43,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:40:43,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 10:40:45,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:40:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379201555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:40:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:40:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228452020] [2024-11-18 10:40:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:45,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:45,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:45,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:45,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:40:45,571 INFO L87 Difference]: Start difference. First operand 12357 states and 12828 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:46,413 INFO L93 Difference]: Finished difference Result 29800 states and 30975 transitions. [2024-11-18 10:40:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:46,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 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 664 [2024-11-18 10:40:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:46,432 INFO L225 Difference]: With dead ends: 29800 [2024-11-18 10:40:46,432 INFO L226 Difference]: Without dead ends: 17445 [2024-11-18 10:40:46,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:40:46,441 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 130 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:46,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 175 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:40:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17445 states. [2024-11-18 10:40:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17445 to 16545. [2024-11-18 10:40:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16545 states, 16544 states have (on average 1.0359042553191489) internal successors, (17138), 16544 states have internal predecessors, (17138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16545 states to 16545 states and 17138 transitions. [2024-11-18 10:40:46,580 INFO L78 Accepts]: Start accepts. Automaton has 16545 states and 17138 transitions. Word has length 664 [2024-11-18 10:40:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:46,580 INFO L471 AbstractCegarLoop]: Abstraction has 16545 states and 17138 transitions. [2024-11-18 10:40:46,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16545 states and 17138 transitions. [2024-11-18 10:40:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2024-11-18 10:40:46,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:46,587 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:46,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 10:40:46,787 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,SelfDestructingSolverStorable12 [2024-11-18 10:40:46,788 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:46,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1196990164, now seen corresponding path program 1 times [2024-11-18 10:40:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733619539] [2024-11-18 10:40:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:46,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-11-18 10:40:47,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:47,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733619539] [2024-11-18 10:40:47,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733619539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:47,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:47,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:40:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468732752] [2024-11-18 10:40:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:47,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:40:47,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:40:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:40:47,238 INFO L87 Difference]: Start difference. First operand 16545 states and 17138 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:48,316 INFO L93 Difference]: Finished difference Result 39674 states and 41121 transitions. [2024-11-18 10:40:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:40:48,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 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 688 [2024-11-18 10:40:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:48,336 INFO L225 Difference]: With dead ends: 39674 [2024-11-18 10:40:48,336 INFO L226 Difference]: Without dead ends: 23131 [2024-11-18 10:40:48,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:40:48,348 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 583 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:48,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 179 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:40:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23131 states. [2024-11-18 10:40:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23131 to 17439. [2024-11-18 10:40:48,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17439 states, 17438 states have (on average 1.0334900791375157) internal successors, (18022), 17438 states have internal predecessors, (18022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17439 states to 17439 states and 18022 transitions. [2024-11-18 10:40:48,498 INFO L78 Accepts]: Start accepts. Automaton has 17439 states and 18022 transitions. Word has length 688 [2024-11-18 10:40:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:48,498 INFO L471 AbstractCegarLoop]: Abstraction has 17439 states and 18022 transitions. [2024-11-18 10:40:48,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 17439 states and 18022 transitions. [2024-11-18 10:40:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2024-11-18 10:40:48,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:48,506 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:48,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:40:48,506 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:48,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash -265831356, now seen corresponding path program 1 times [2024-11-18 10:40:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528626664] [2024-11-18 10:40:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-18 10:40:48,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:48,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528626664] [2024-11-18 10:40:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528626664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:48,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:48,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:48,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014467877] [2024-11-18 10:40:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:48,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:48,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:48,800 INFO L87 Difference]: Start difference. First operand 17439 states and 18022 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:49,440 INFO L93 Difference]: Finished difference Result 34574 states and 35744 transitions. [2024-11-18 10:40:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 719 [2024-11-18 10:40:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:49,455 INFO L225 Difference]: With dead ends: 34574 [2024-11-18 10:40:49,455 INFO L226 Difference]: Without dead ends: 17436 [2024-11-18 10:40:49,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:49,466 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 436 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:49,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 68 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:40:49,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17436 states. [2024-11-18 10:40:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17436 to 17136. [2024-11-18 10:40:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17136 states, 17135 states have (on average 1.0334403268164576) internal successors, (17708), 17135 states have internal predecessors, (17708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17136 states to 17136 states and 17708 transitions. [2024-11-18 10:40:49,604 INFO L78 Accepts]: Start accepts. Automaton has 17136 states and 17708 transitions. Word has length 719 [2024-11-18 10:40:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:49,605 INFO L471 AbstractCegarLoop]: Abstraction has 17136 states and 17708 transitions. [2024-11-18 10:40:49,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 17136 states and 17708 transitions. [2024-11-18 10:40:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2024-11-18 10:40:49,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:49,614 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:49,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:40:49,615 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:49,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1716564453, now seen corresponding path program 1 times [2024-11-18 10:40:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:49,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271746406] [2024-11-18 10:40:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:49,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-18 10:40:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271746406] [2024-11-18 10:40:49,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271746406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:49,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706591313] [2024-11-18 10:40:49,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:49,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:49,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:49,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:49,842 INFO L87 Difference]: Start difference. First operand 17136 states and 17708 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:50,508 INFO L93 Difference]: Finished difference Result 36056 states and 37327 transitions. [2024-11-18 10:40:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:50,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 753 [2024-11-18 10:40:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:50,524 INFO L225 Difference]: With dead ends: 36056 [2024-11-18 10:40:50,524 INFO L226 Difference]: Without dead ends: 19221 [2024-11-18 10:40:50,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:50,589 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 264 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:50,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 456 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:40:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19221 states. [2024-11-18 10:40:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19221 to 18324. [2024-11-18 10:40:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18324 states, 18323 states have (on average 1.0303989521366588) internal successors, (18880), 18323 states have internal predecessors, (18880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18324 states to 18324 states and 18880 transitions. [2024-11-18 10:40:50,717 INFO L78 Accepts]: Start accepts. Automaton has 18324 states and 18880 transitions. Word has length 753 [2024-11-18 10:40:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:50,718 INFO L471 AbstractCegarLoop]: Abstraction has 18324 states and 18880 transitions. [2024-11-18 10:40:50,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 18324 states and 18880 transitions. [2024-11-18 10:40:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2024-11-18 10:40:50,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:50,727 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:50,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:40:50,728 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:50,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1337623603, now seen corresponding path program 1 times [2024-11-18 10:40:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270806328] [2024-11-18 10:40:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 692 proven. 188 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-18 10:40:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270806328] [2024-11-18 10:40:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270806328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125651035] [2024-11-18 10:40:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:51,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:51,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:51,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 10:40:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:51,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:40:51,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 735 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-11-18 10:40:52,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:40:52,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125651035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:52,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:40:52,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 10:40:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126584530] [2024-11-18 10:40:52,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:52,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:40:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:52,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:40:52,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:40:52,154 INFO L87 Difference]: Start difference. First operand 18324 states and 18880 transitions. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:53,345 INFO L93 Difference]: Finished difference Result 35737 states and 36717 transitions. [2024-11-18 10:40:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:40:53,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 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 828 [2024-11-18 10:40:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:53,361 INFO L225 Difference]: With dead ends: 35737 [2024-11-18 10:40:53,362 INFO L226 Difference]: Without dead ends: 17415 [2024-11-18 10:40:53,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:40:53,373 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 351 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:53,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 450 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 10:40:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2024-11-18 10:40:53,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 12904. [2024-11-18 10:40:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.0233279082383941) internal successors, (13204), 12903 states have internal predecessors, (13204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 13204 transitions. [2024-11-18 10:40:53,529 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 13204 transitions. Word has length 828 [2024-11-18 10:40:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:53,530 INFO L471 AbstractCegarLoop]: Abstraction has 12904 states and 13204 transitions. [2024-11-18 10:40:53,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 13204 transitions. [2024-11-18 10:40:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2024-11-18 10:40:53,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:53,546 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:53,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 10:40:53,747 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,SelfDestructingSolverStorable16 [2024-11-18 10:40:53,747 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:53,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 63589473, now seen corresponding path program 1 times [2024-11-18 10:40:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:53,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419746318] [2024-11-18 10:40:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:54,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-11-18 10:40:54,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:54,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419746318] [2024-11-18 10:40:54,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419746318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:54,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997533074] [2024-11-18 10:40:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:54,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:54,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:54,231 INFO L87 Difference]: Start difference. First operand 12904 states and 13204 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:54,823 INFO L93 Difference]: Finished difference Result 27906 states and 28587 transitions. [2024-11-18 10:40:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 836 [2024-11-18 10:40:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:54,834 INFO L225 Difference]: With dead ends: 27906 [2024-11-18 10:40:54,834 INFO L226 Difference]: Without dead ends: 15303 [2024-11-18 10:40:54,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:54,842 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 320 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:54,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 85 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:40:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15303 states. [2024-11-18 10:40:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15303 to 12003. [2024-11-18 10:40:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12003 states, 12002 states have (on average 1.022996167305449) internal successors, (12278), 12002 states have internal predecessors, (12278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12003 states to 12003 states and 12278 transitions. [2024-11-18 10:40:54,959 INFO L78 Accepts]: Start accepts. Automaton has 12003 states and 12278 transitions. Word has length 836 [2024-11-18 10:40:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:54,960 INFO L471 AbstractCegarLoop]: Abstraction has 12003 states and 12278 transitions. [2024-11-18 10:40:54,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 12003 states and 12278 transitions. [2024-11-18 10:40:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2024-11-18 10:40:54,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:54,969 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:54,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:40:54,970 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:54,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 628335733, now seen corresponding path program 1 times [2024-11-18 10:40:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683100751] [2024-11-18 10:40:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-18 10:40:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683100751] [2024-11-18 10:40:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683100751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:55,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:55,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:55,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536319298] [2024-11-18 10:40:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:55,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:55,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:55,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:55,376 INFO L87 Difference]: Start difference. First operand 12003 states and 12278 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:55,944 INFO L93 Difference]: Finished difference Result 27607 states and 28280 transitions. [2024-11-18 10:40:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:55,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 849 [2024-11-18 10:40:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:55,957 INFO L225 Difference]: With dead ends: 27607 [2024-11-18 10:40:55,958 INFO L226 Difference]: Without dead ends: 15905 [2024-11-18 10:40:55,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:55,965 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 175 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:55,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 425 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:40:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15905 states. [2024-11-18 10:40:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15905 to 14407. [2024-11-18 10:40:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14407 states, 14406 states have (on average 1.021727058170207) internal successors, (14719), 14406 states have internal predecessors, (14719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14407 states to 14407 states and 14719 transitions. [2024-11-18 10:40:56,074 INFO L78 Accepts]: Start accepts. Automaton has 14407 states and 14719 transitions. Word has length 849 [2024-11-18 10:40:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:56,074 INFO L471 AbstractCegarLoop]: Abstraction has 14407 states and 14719 transitions. [2024-11-18 10:40:56,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 14407 states and 14719 transitions. [2024-11-18 10:40:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2024-11-18 10:40:56,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:56,084 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:40:56,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:40:56,084 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:56,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2109547138, now seen corresponding path program 1 times [2024-11-18 10:40:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953817307] [2024-11-18 10:40:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 641 proven. 269 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-18 10:40:57,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:57,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953817307] [2024-11-18 10:40:57,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953817307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:40:57,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013280722] [2024-11-18 10:40:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:57,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:57,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:40:57,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:40:57,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 10:40:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:57,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:40:57,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:40:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-18 10:40:57,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:40:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013280722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:57,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:40:57,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 10:40:57,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048806002] [2024-11-18 10:40:57,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:57,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:40:57,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:40:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:40:57,474 INFO L87 Difference]: Start difference. First operand 14407 states and 14719 transitions. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:58,382 INFO L93 Difference]: Finished difference Result 20703 states and 21118 transitions. [2024-11-18 10:40:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:40:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 869 [2024-11-18 10:40:58,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:58,399 INFO L225 Difference]: With dead ends: 20703 [2024-11-18 10:40:58,400 INFO L226 Difference]: Without dead ends: 20701 [2024-11-18 10:40:58,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:40:58,404 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 450 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:58,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 75 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:40:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20701 states. [2024-11-18 10:40:58,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20701 to 14108. [2024-11-18 10:40:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 14107 states have (on average 1.0217622456936273) internal successors, (14414), 14107 states have internal predecessors, (14414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 14414 transitions. [2024-11-18 10:40:58,524 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 14414 transitions. Word has length 869 [2024-11-18 10:40:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:58,524 INFO L471 AbstractCegarLoop]: Abstraction has 14108 states and 14414 transitions. [2024-11-18 10:40:58,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 14414 transitions. [2024-11-18 10:40:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2024-11-18 10:40:58,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:58,533 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:40:58,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 10:40:58,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:40:58,734 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:58,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:58,734 INFO L85 PathProgramCache]: Analyzing trace with hash -550717045, now seen corresponding path program 1 times [2024-11-18 10:40:58,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:58,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343943346] [2024-11-18 10:40:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:58,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:40:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:40:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-18 10:40:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:40:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343943346] [2024-11-18 10:40:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343943346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:40:59,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:40:59,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:40:59,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831895433] [2024-11-18 10:40:59,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:40:59,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:40:59,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:40:59,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:40:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:59,085 INFO L87 Difference]: Start difference. First operand 14108 states and 14414 transitions. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:40:59,708 INFO L93 Difference]: Finished difference Result 29708 states and 30352 transitions. [2024-11-18 10:40:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:40:59,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 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 881 [2024-11-18 10:40:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:40:59,723 INFO L225 Difference]: With dead ends: 29708 [2024-11-18 10:40:59,723 INFO L226 Difference]: Without dead ends: 15602 [2024-11-18 10:40:59,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:40:59,732 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 308 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:40:59,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 416 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:40:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2024-11-18 10:40:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 13208. [2024-11-18 10:40:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 1.0202922692511547) internal successors, (13475), 13207 states have internal predecessors, (13475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 13475 transitions. [2024-11-18 10:40:59,896 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 13475 transitions. Word has length 881 [2024-11-18 10:40:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:40:59,896 INFO L471 AbstractCegarLoop]: Abstraction has 13208 states and 13475 transitions. [2024-11-18 10:40:59,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:40:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 13475 transitions. [2024-11-18 10:40:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2024-11-18 10:40:59,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:40:59,912 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:40:59,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 10:40:59,912 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:40:59,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:40:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash 614307854, now seen corresponding path program 1 times [2024-11-18 10:40:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:40:59,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677530479] [2024-11-18 10:40:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:40:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:41:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:41:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2024-11-18 10:41:00,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:41:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677530479] [2024-11-18 10:41:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677530479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:41:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:41:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:41:00,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197918244] [2024-11-18 10:41:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:41:00,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:41:00,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:41:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:41:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:41:00,568 INFO L87 Difference]: Start difference. First operand 13208 states and 13475 transitions. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:41:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:41:01,598 INFO L93 Difference]: Finished difference Result 30612 states and 31221 transitions. [2024-11-18 10:41:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:41:01,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 902 [2024-11-18 10:41:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:41:01,610 INFO L225 Difference]: With dead ends: 30612 [2024-11-18 10:41:01,611 INFO L226 Difference]: Without dead ends: 17406 [2024-11-18 10:41:01,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:41:01,618 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 490 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:41:01,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 397 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:41:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17406 states. [2024-11-18 10:41:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17406 to 13207. [2024-11-18 10:41:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 13206 states have (on average 1.0201423595335453) internal successors, (13472), 13206 states have internal predecessors, (13472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:41:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 13472 transitions. [2024-11-18 10:41:01,718 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 13472 transitions. Word has length 902 [2024-11-18 10:41:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:41:01,718 INFO L471 AbstractCegarLoop]: Abstraction has 13207 states and 13472 transitions. [2024-11-18 10:41:01,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:41:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 13472 transitions. [2024-11-18 10:41:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2024-11-18 10:41:01,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:41:01,726 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:41:01,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 10:41:01,726 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:41:01,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:41:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1422622432, now seen corresponding path program 1 times [2024-11-18 10:41:01,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:41:01,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377002082] [2024-11-18 10:41:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:41:01,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:41:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:41:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1003 proven. 183 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-18 10:41:02,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:41:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377002082] [2024-11-18 10:41:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377002082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:41:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416067185] [2024-11-18 10:41:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:41:02,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:41:02,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:41:02,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:41:02,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 10:41:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:41:02,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:41:02,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:41:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1133 proven. 76 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-18 10:41:03,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:41:03,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1058 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-18 10:41:03,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416067185] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 10:41:03,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 10:41:03,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2024-11-18 10:41:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447052442] [2024-11-18 10:41:03,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:41:03,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:41:03,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:41:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:41:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:41:03,606 INFO L87 Difference]: Start difference. First operand 13207 states and 13472 transitions. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:41:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:41:04,191 INFO L93 Difference]: Finished difference Result 26713 states and 27250 transitions. [2024-11-18 10:41:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:41:04,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 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 906 [2024-11-18 10:41:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:41:04,200 INFO L225 Difference]: With dead ends: 26713 [2024-11-18 10:41:04,200 INFO L226 Difference]: Without dead ends: 13807 [2024-11-18 10:41:04,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1811 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:41:04,206 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 243 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:41:04,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 41 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 10:41:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13807 states. [2024-11-18 10:41:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13807 to 13504. [2024-11-18 10:41:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13504 states, 13503 states have (on average 1.0185144042064727) internal successors, (13753), 13503 states have internal predecessors, (13753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:41:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13504 states to 13504 states and 13753 transitions. [2024-11-18 10:41:04,291 INFO L78 Accepts]: Start accepts. Automaton has 13504 states and 13753 transitions. Word has length 906 [2024-11-18 10:41:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:41:04,292 INFO L471 AbstractCegarLoop]: Abstraction has 13504 states and 13753 transitions. [2024-11-18 10:41:04,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:41:04,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13504 states and 13753 transitions. [2024-11-18 10:41:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2024-11-18 10:41:04,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:41:04,300 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:41:04,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 10:41:04,501 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,SelfDestructingSolverStorable22 [2024-11-18 10:41:04,501 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:41:04,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:41:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash -522066642, now seen corresponding path program 1 times [2024-11-18 10:41:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:41:04,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381593166] [2024-11-18 10:41:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:41:04,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:41:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:41:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1477 backedges. 861 proven. 188 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-18 10:41:05,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:41:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381593166] [2024-11-18 10:41:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381593166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:41:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095138832] [2024-11-18 10:41:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:41:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:41:05,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:41:05,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:41:05,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 10:41:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:41:05,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:41:05,629 INFO L278 TraceCheckSpWp]: Computing forward predicates...