./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label41.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/Problem12_label41.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 fdbc0fdc55527506c6212fedb75f15bc177498c1e0d7baa5a0c1614f273a6557 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:27:31,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:27:31,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:27:31,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:27:31,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:27:31,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:27:31,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:27:31,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:27:31,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:27:31,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:27:31,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:27:31,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:27:31,918 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:27:31,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:27:31,920 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:27:31,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:27:31,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:27:31,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:27:31,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:27:31,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:27:31,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:27:31,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:27:31,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:27:31,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:27:31,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:27:31,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:27:31,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:27:31,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:27:31,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:27:31,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:27:31,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:27:31,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:27:31,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:27:31,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:27:31,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:27:31,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:27:31,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:27:31,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:27:31,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:27:31,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:27:31,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:27:31,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:27:31,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbc0fdc55527506c6212fedb75f15bc177498c1e0d7baa5a0c1614f273a6557 [2024-11-18 10:27:32,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:27:32,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:27:32,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:27:32,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:27:32,180 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:27:32,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label41.c [2024-11-18 10:27:33,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:27:34,060 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:27:34,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label41.c [2024-11-18 10:27:34,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0894eba93/58eb790b76a54cbea2f15e5cf1c061c3/FLAGd47426d85 [2024-11-18 10:27:34,232 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0894eba93/58eb790b76a54cbea2f15e5cf1c061c3 [2024-11-18 10:27:34,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:27:34,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:27:34,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:27:34,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:27:34,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:27:34,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:27:34" (1/1) ... [2024-11-18 10:27:34,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aff1612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:34, skipping insertion in model container [2024-11-18 10:27:34,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:27:34" (1/1) ... [2024-11-18 10:27:34,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:27:34,804 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/Problem12_label41.c[6479,6492] [2024-11-18 10:27:35,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:27:35,408 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:27:35,432 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/Problem12_label41.c[6479,6492] [2024-11-18 10:27:35,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:27:35,825 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:27:35,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35 WrapperNode [2024-11-18 10:27:35,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:27:35,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:27:35,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:27:35,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:27:35,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:35,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,134 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-18 10:27:36,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:27:36,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:27:36,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:27:36,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:27:36,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,359 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 10:27:36,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,506 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:27:36,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:27:36,651 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:27:36,651 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:27:36,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (1/1) ... [2024-11-18 10:27:36,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:27:36,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:27:36,691 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 10:27:36,698 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 10:27:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:27:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:27:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:27:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:27:36,802 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:27:36,804 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:27:40,407 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-18 10:27:40,408 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:27:40,449 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:27:40,449 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:27:40,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:27:40 BoogieIcfgContainer [2024-11-18 10:27:40,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:27:40,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:27:40,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:27:40,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:27:40,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:27:34" (1/3) ... [2024-11-18 10:27:40,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db9faaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:27:40, skipping insertion in model container [2024-11-18 10:27:40,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:27:35" (2/3) ... [2024-11-18 10:27:40,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db9faaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:27:40, skipping insertion in model container [2024-11-18 10:27:40,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:27:40" (3/3) ... [2024-11-18 10:27:40,455 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41.c [2024-11-18 10:27:40,467 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:27:40,467 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:27:40,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:27:40,551 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;@6f5b0da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:27:40,555 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:27:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 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 10:27:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 10:27:40,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:40,579 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] [2024-11-18 10:27:40,580 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:40,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1382487458, now seen corresponding path program 1 times [2024-11-18 10:27:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:40,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330311109] [2024-11-18 10:27:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:40,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:41,017 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 10:27:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:41,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330311109] [2024-11-18 10:27:41,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330311109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:41,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:27:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105066683] [2024-11-18 10:27:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:41,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:27:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:27:41,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:27:41,051 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 10:27:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:44,601 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-18 10:27:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:27:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-18 10:27:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:44,643 INFO L225 Difference]: With dead ends: 2388 [2024-11-18 10:27:44,643 INFO L226 Difference]: Without dead ends: 1506 [2024-11-18 10:27:44,661 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 10:27:44,664 INFO L432 NwaCegarLoop]: 471 mSDtfsCounter, 782 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:44,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-18 10:27:44,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-18 10:27:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-18 10:27:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 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 10:27:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2024-11-18 10:27:44,796 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 52 [2024-11-18 10:27:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:44,797 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2024-11-18 10:27:44,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 10:27:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2024-11-18 10:27:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-18 10:27:44,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:44,801 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, 1, 1, 1, 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 10:27:44,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:27:44,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:44,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:44,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1969596239, now seen corresponding path program 1 times [2024-11-18 10:27:44,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:44,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405132199] [2024-11-18 10:27:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:27:45,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:45,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405132199] [2024-11-18 10:27:45,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405132199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:45,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:45,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:27:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227222082] [2024-11-18 10:27:45,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:45,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:27:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:27:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:27:45,230 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 10:27:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:49,058 INFO L93 Difference]: Finished difference Result 4549 states and 7430 transitions. [2024-11-18 10:27:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:27:49,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-18 10:27:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:49,073 INFO L225 Difference]: With dead ends: 4549 [2024-11-18 10:27:49,074 INFO L226 Difference]: Without dead ends: 3008 [2024-11-18 10:27:49,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:27:49,081 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 703 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3074 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 3803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:49,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 652 Invalid, 3803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3074 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-18 10:27:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2024-11-18 10:27:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2024-11-18 10:27:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.341536415031593) internal successors, (4034), 3007 states have internal predecessors, (4034), 0 states have call successors, (0), 0 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 10:27:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4034 transitions. [2024-11-18 10:27:49,142 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4034 transitions. Word has length 123 [2024-11-18 10:27:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:49,144 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4034 transitions. [2024-11-18 10:27:49,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 10:27:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4034 transitions. [2024-11-18 10:27:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 10:27:49,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:49,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:49,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:27:49,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:49,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1310463314, now seen corresponding path program 1 times [2024-11-18 10:27:49,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:49,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806281264] [2024-11-18 10:27:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:27:49,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806281264] [2024-11-18 10:27:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806281264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:49,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:49,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:27:49,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744085828] [2024-11-18 10:27:49,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:49,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:27:49,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:49,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:27:49,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:27:49,489 INFO L87 Difference]: Start difference. First operand 3008 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 10:27:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:53,348 INFO L93 Difference]: Finished difference Result 9769 states and 12892 transitions. [2024-11-18 10:27:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:27:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-11-18 10:27:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:53,367 INFO L225 Difference]: With dead ends: 9769 [2024-11-18 10:27:53,367 INFO L226 Difference]: Without dead ends: 6763 [2024-11-18 10:27:53,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:27:53,374 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 2093 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:53,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 452 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4273 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-18 10:27:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2024-11-18 10:27:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2024-11-18 10:27:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.287341023365868) internal successors, (8705), 6762 states have internal predecessors, (8705), 0 states have call successors, (0), 0 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 10:27:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8705 transitions. [2024-11-18 10:27:53,489 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8705 transitions. Word has length 161 [2024-11-18 10:27:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:53,490 INFO L471 AbstractCegarLoop]: Abstraction has 6763 states and 8705 transitions. [2024-11-18 10:27:53,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 10:27:53,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8705 transitions. [2024-11-18 10:27:53,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-18 10:27:53,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:53,493 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, 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] [2024-11-18 10:27:53,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:27:53,493 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:53,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1590426961, now seen corresponding path program 1 times [2024-11-18 10:27:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:53,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698226841] [2024-11-18 10:27:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 10:27:53,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:53,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698226841] [2024-11-18 10:27:53,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698226841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:53,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:27:53,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:27:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539557363] [2024-11-18 10:27:53,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:53,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:27:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:53,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:27:53,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:27:53,864 INFO L87 Difference]: Start difference. First operand 6763 states and 8705 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 10:27:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:27:56,932 INFO L93 Difference]: Finished difference Result 15816 states and 21393 transitions. [2024-11-18 10:27:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:27:56,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 264 [2024-11-18 10:27:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:27:56,991 INFO L225 Difference]: With dead ends: 15816 [2024-11-18 10:27:56,995 INFO L226 Difference]: Without dead ends: 9769 [2024-11-18 10:27:57,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:27:57,020 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 850 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:27:57,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 492 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 10:27:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2024-11-18 10:27:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2024-11-18 10:27:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.272987917263977) internal successors, (12432), 9766 states have internal predecessors, (12432), 0 states have call successors, (0), 0 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 10:27:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12432 transitions. [2024-11-18 10:27:57,175 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12432 transitions. Word has length 264 [2024-11-18 10:27:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:27:57,176 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 12432 transitions. [2024-11-18 10:27:57,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 10:27:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12432 transitions. [2024-11-18 10:27:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-18 10:27:57,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:27:57,179 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:27:57,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:27:57,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:27:57,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:27:57,180 INFO L85 PathProgramCache]: Analyzing trace with hash -36677128, now seen corresponding path program 1 times [2024-11-18 10:27:57,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:27:57,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475261689] [2024-11-18 10:27:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:57,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:27:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 41 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:27:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:27:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475261689] [2024-11-18 10:27:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475261689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:27:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015403433] [2024-11-18 10:27:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:27:57,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:27:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:27:57,637 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 10:27:57,638 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 10:27:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:27:57,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:27:57,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:27:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 10:27:57,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:27:57,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015403433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:27:57,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:27:57,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-18 10:27:57,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696155556] [2024-11-18 10:27:57,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:27:57,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:27:57,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:27:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:27:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:27:57,844 INFO L87 Difference]: Start difference. First operand 9767 states and 12432 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 10:28:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:00,865 INFO L93 Difference]: Finished difference Result 24789 states and 32538 transitions. [2024-11-18 10:28:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:00,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 282 [2024-11-18 10:28:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:00,892 INFO L225 Difference]: With dead ends: 24789 [2024-11-18 10:28:00,893 INFO L226 Difference]: Without dead ends: 15775 [2024-11-18 10:28:00,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:28:00,902 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 716 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:00,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 574 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:28:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2024-11-18 10:28:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 15775. [2024-11-18 10:28:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2571953848104476) internal successors, (19831), 15774 states have internal predecessors, (19831), 0 states have call successors, (0), 0 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 10:28:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19831 transitions. [2024-11-18 10:28:01,071 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19831 transitions. Word has length 282 [2024-11-18 10:28:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:01,072 INFO L471 AbstractCegarLoop]: Abstraction has 15775 states and 19831 transitions. [2024-11-18 10:28:01,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 10:28:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19831 transitions. [2024-11-18 10:28:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-18 10:28:01,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:01,076 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:28:01,093 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 10:28:01,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:28:01,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:01,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:01,279 INFO L85 PathProgramCache]: Analyzing trace with hash 591381476, now seen corresponding path program 1 times [2024-11-18 10:28:01,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:01,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964192305] [2024-11-18 10:28:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:01,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-18 10:28:01,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:01,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964192305] [2024-11-18 10:28:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964192305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:01,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:28:01,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204901232] [2024-11-18 10:28:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:01,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:01,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:01,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:01,498 INFO L87 Difference]: Start difference. First operand 15775 states and 19831 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 10:28:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:04,430 INFO L93 Difference]: Finished difference Result 44315 states and 56348 transitions. [2024-11-18 10:28:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:04,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 290 [2024-11-18 10:28:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:04,507 INFO L225 Difference]: With dead ends: 44315 [2024-11-18 10:28:04,507 INFO L226 Difference]: Without dead ends: 29293 [2024-11-18 10:28:04,522 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 10:28:04,525 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 690 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:04,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 422 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 10:28:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2024-11-18 10:28:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 26289. [2024-11-18 10:28:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26289 states, 26288 states have (on average 1.1972382836275106) internal successors, (31473), 26288 states have internal predecessors, (31473), 0 states have call successors, (0), 0 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 10:28:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 31473 transitions. [2024-11-18 10:28:04,891 INFO L78 Accepts]: Start accepts. Automaton has 26289 states and 31473 transitions. Word has length 290 [2024-11-18 10:28:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:04,891 INFO L471 AbstractCegarLoop]: Abstraction has 26289 states and 31473 transitions. [2024-11-18 10:28:04,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 10:28:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 26289 states and 31473 transitions. [2024-11-18 10:28:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-18 10:28:04,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:04,898 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:04,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:28:04,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:04,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:04,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1453377430, now seen corresponding path program 1 times [2024-11-18 10:28:04,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:04,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686821157] [2024-11-18 10:28:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:04,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 10:28:05,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:05,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686821157] [2024-11-18 10:28:05,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686821157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:05,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295042504] [2024-11-18 10:28:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:05,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:05,119 INFO L87 Difference]: Start difference. First operand 26289 states and 31473 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 10:28:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:08,181 INFO L93 Difference]: Finished difference Result 65343 states and 79632 transitions. [2024-11-18 10:28:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:08,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 403 [2024-11-18 10:28:08,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:08,444 INFO L225 Difference]: With dead ends: 65343 [2024-11-18 10:28:08,444 INFO L226 Difference]: Without dead ends: 39807 [2024-11-18 10:28:08,467 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 10:28:08,468 INFO L432 NwaCegarLoop]: 1239 mSDtfsCounter, 679 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:08,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1247 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 10:28:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39807 states. [2024-11-18 10:28:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39807 to 37554. [2024-11-18 10:28:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37554 states, 37553 states have (on average 1.1675764918914602) internal successors, (43846), 37553 states have internal predecessors, (43846), 0 states have call successors, (0), 0 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 10:28:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 43846 transitions. [2024-11-18 10:28:08,806 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 43846 transitions. Word has length 403 [2024-11-18 10:28:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:08,807 INFO L471 AbstractCegarLoop]: Abstraction has 37554 states and 43846 transitions. [2024-11-18 10:28:08,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 10:28:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 43846 transitions. [2024-11-18 10:28:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-18 10:28:08,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:08,813 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:08,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:28:08,814 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:08,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash 570079028, now seen corresponding path program 1 times [2024-11-18 10:28:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296029784] [2024-11-18 10:28:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-18 10:28:09,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:09,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296029784] [2024-11-18 10:28:09,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296029784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:09,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:09,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157146237] [2024-11-18 10:28:09,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:09,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:09,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:09,044 INFO L87 Difference]: Start difference. First operand 37554 states and 43846 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 10:28:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:12,058 INFO L93 Difference]: Finished difference Result 88624 states and 105173 transitions. [2024-11-18 10:28:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 407 [2024-11-18 10:28:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:12,147 INFO L225 Difference]: With dead ends: 88624 [2024-11-18 10:28:12,151 INFO L226 Difference]: Without dead ends: 51823 [2024-11-18 10:28:12,209 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 10:28:12,210 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 779 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:12,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 123 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 10:28:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51823 states. [2024-11-18 10:28:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51823 to 51823. [2024-11-18 10:28:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51823 states, 51822 states have (on average 1.1838215429740264) internal successors, (61348), 51822 states have internal predecessors, (61348), 0 states have call successors, (0), 0 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 10:28:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51823 states to 51823 states and 61348 transitions. [2024-11-18 10:28:12,806 INFO L78 Accepts]: Start accepts. Automaton has 51823 states and 61348 transitions. Word has length 407 [2024-11-18 10:28:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:12,807 INFO L471 AbstractCegarLoop]: Abstraction has 51823 states and 61348 transitions. [2024-11-18 10:28:12,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 10:28:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 51823 states and 61348 transitions. [2024-11-18 10:28:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 10:28:12,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:12,812 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:28:12,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:28:12,812 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:12,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1281565654, now seen corresponding path program 1 times [2024-11-18 10:28:12,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:12,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789347670] [2024-11-18 10:28:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:13,350 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-18 10:28:13,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:13,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789347670] [2024-11-18 10:28:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789347670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:13,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:13,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:13,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402412185] [2024-11-18 10:28:13,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:13,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:13,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:13,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:13,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:13,354 INFO L87 Difference]: Start difference. First operand 51823 states and 61348 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 10:28:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:16,000 INFO L93 Difference]: Finished difference Result 112656 states and 132797 transitions. [2024-11-18 10:28:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 411 [2024-11-18 10:28:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:16,066 INFO L225 Difference]: With dead ends: 112656 [2024-11-18 10:28:16,066 INFO L226 Difference]: Without dead ends: 61586 [2024-11-18 10:28:16,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 10:28:16,102 INFO L432 NwaCegarLoop]: 892 mSDtfsCounter, 816 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:16,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 900 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:28:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2024-11-18 10:28:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 57831. [2024-11-18 10:28:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57831 states, 57830 states have (on average 1.147362960401176) internal successors, (66352), 57830 states have internal predecessors, (66352), 0 states have call successors, (0), 0 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 10:28:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57831 states to 57831 states and 66352 transitions. [2024-11-18 10:28:17,195 INFO L78 Accepts]: Start accepts. Automaton has 57831 states and 66352 transitions. Word has length 411 [2024-11-18 10:28:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:17,195 INFO L471 AbstractCegarLoop]: Abstraction has 57831 states and 66352 transitions. [2024-11-18 10:28:17,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 10:28:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 57831 states and 66352 transitions. [2024-11-18 10:28:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-11-18 10:28:17,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:17,204 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:17,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:28:17,204 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:17,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1151737346, now seen corresponding path program 1 times [2024-11-18 10:28:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782802434] [2024-11-18 10:28:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 350 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:28:18,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:18,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782802434] [2024-11-18 10:28:18,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782802434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:28:18,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146595607] [2024-11-18 10:28:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:18,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:28:18,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:28:18,405 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 10:28:18,406 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 10:28:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:18,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:28:18,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:28:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-18 10:28:18,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:28:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146595607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:18,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:28:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 10:28:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585197569] [2024-11-18 10:28:18,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:18,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:28:18,657 INFO L87 Difference]: Start difference. First operand 57831 states and 66352 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 10:28:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:21,800 INFO L93 Difference]: Finished difference Result 119415 states and 136613 transitions. [2024-11-18 10:28:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:21,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 470 [2024-11-18 10:28:21,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:21,861 INFO L225 Difference]: With dead ends: 119415 [2024-11-18 10:28:21,861 INFO L226 Difference]: Without dead ends: 62337 [2024-11-18 10:28:22,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 471 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 10:28:22,040 INFO L432 NwaCegarLoop]: 1203 mSDtfsCounter, 705 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:22,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1210 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 10:28:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62337 states. [2024-11-18 10:28:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62337 to 61586. [2024-11-18 10:28:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61586 states, 61585 states have (on average 1.1196070471705772) internal successors, (68951), 61585 states have internal predecessors, (68951), 0 states have call successors, (0), 0 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 10:28:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61586 states to 61586 states and 68951 transitions. [2024-11-18 10:28:22,931 INFO L78 Accepts]: Start accepts. Automaton has 61586 states and 68951 transitions. Word has length 470 [2024-11-18 10:28:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:22,935 INFO L471 AbstractCegarLoop]: Abstraction has 61586 states and 68951 transitions. [2024-11-18 10:28:22,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 10:28:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 61586 states and 68951 transitions. [2024-11-18 10:28:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 10:28:22,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:22,950 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:22,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:28:23,150 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,SelfDestructingSolverStorable9 [2024-11-18 10:28:23,151 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:23,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1083689169, now seen corresponding path program 1 times [2024-11-18 10:28:23,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412866263] [2024-11-18 10:28:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:23,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 190 proven. 229 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-18 10:28:23,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:23,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412866263] [2024-11-18 10:28:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412866263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:28:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879719865] [2024-11-18 10:28:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:23,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:28:23,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:28:23,710 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 10:28:23,735 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 10:28:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:23,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:28:23,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:28:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 10:28:24,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:28:24,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879719865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:24,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:28:24,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 10:28:24,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800837459] [2024-11-18 10:28:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:24,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:24,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:24,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:28:24,164 INFO L87 Difference]: Start difference. First operand 61586 states and 68951 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 10:28:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:27,195 INFO L93 Difference]: Finished difference Result 157716 states and 177463 transitions. [2024-11-18 10:28:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:27,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 476 [2024-11-18 10:28:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:27,292 INFO L225 Difference]: With dead ends: 157716 [2024-11-18 10:28:27,292 INFO L226 Difference]: Without dead ends: 96883 [2024-11-18 10:28:27,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:28:27,328 INFO L432 NwaCegarLoop]: 971 mSDtfsCounter, 615 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:27,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 978 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 10:28:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96883 states. [2024-11-18 10:28:28,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96883 to 96883. [2024-11-18 10:28:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96883 states, 96882 states have (on average 1.1168638137115254) internal successors, (108204), 96882 states have internal predecessors, (108204), 0 states have call successors, (0), 0 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 10:28:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96883 states to 96883 states and 108204 transitions. [2024-11-18 10:28:28,682 INFO L78 Accepts]: Start accepts. Automaton has 96883 states and 108204 transitions. Word has length 476 [2024-11-18 10:28:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:28,683 INFO L471 AbstractCegarLoop]: Abstraction has 96883 states and 108204 transitions. [2024-11-18 10:28:28,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 10:28:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 96883 states and 108204 transitions. [2024-11-18 10:28:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-18 10:28:28,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:28,691 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:28,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 10:28:28,892 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 10:28:28,893 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:28,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash 150900610, now seen corresponding path program 1 times [2024-11-18 10:28:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695417284] [2024-11-18 10:28:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 10:28:29,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695417284] [2024-11-18 10:28:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695417284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:29,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:29,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:29,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816361913] [2024-11-18 10:28:29,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:29,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:29,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:29,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:29,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:29,450 INFO L87 Difference]: Start difference. First operand 96883 states and 108204 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 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 10:28:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:33,009 INFO L93 Difference]: Finished difference Result 231314 states and 258927 transitions. [2024-11-18 10:28:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 486 [2024-11-18 10:28:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:33,152 INFO L225 Difference]: With dead ends: 231314 [2024-11-18 10:28:33,152 INFO L226 Difference]: Without dead ends: 135184 [2024-11-18 10:28:33,185 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 10:28:33,186 INFO L432 NwaCegarLoop]: 1218 mSDtfsCounter, 571 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:33,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1226 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 10:28:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135184 states. [2024-11-18 10:28:34,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135184 to 130678. [2024-11-18 10:28:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130678 states, 130677 states have (on average 1.1148097982047338) internal successors, (145680), 130677 states have internal predecessors, (145680), 0 states have call successors, (0), 0 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 10:28:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130678 states to 130678 states and 145680 transitions. [2024-11-18 10:28:34,893 INFO L78 Accepts]: Start accepts. Automaton has 130678 states and 145680 transitions. Word has length 486 [2024-11-18 10:28:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:34,898 INFO L471 AbstractCegarLoop]: Abstraction has 130678 states and 145680 transitions. [2024-11-18 10:28:34,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 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 10:28:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 130678 states and 145680 transitions. [2024-11-18 10:28:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2024-11-18 10:28:34,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:34,929 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, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 10:28:34,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 10:28:34,931 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:34,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1053925819, now seen corresponding path program 1 times [2024-11-18 10:28:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454483903] [2024-11-18 10:28:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-18 10:28:36,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:36,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454483903] [2024-11-18 10:28:36,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454483903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:36,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:36,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015647776] [2024-11-18 10:28:36,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:36,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:36,151 INFO L87 Difference]: Start difference. First operand 130678 states and 145680 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 10:28:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:39,627 INFO L93 Difference]: Finished difference Result 288390 states and 322814 transitions. [2024-11-18 10:28:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 568 [2024-11-18 10:28:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:40,044 INFO L225 Difference]: With dead ends: 288390 [2024-11-18 10:28:40,044 INFO L226 Difference]: Without dead ends: 158465 [2024-11-18 10:28:40,067 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 10:28:40,067 INFO L432 NwaCegarLoop]: 1272 mSDtfsCounter, 581 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:40,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1280 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 10:28:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158465 states. [2024-11-18 10:28:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158465 to 154710. [2024-11-18 10:28:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154710 states, 154709 states have (on average 1.1077829990498291) internal successors, (171384), 154709 states have internal predecessors, (171384), 0 states have call successors, (0), 0 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 10:28:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154710 states to 154710 states and 171384 transitions. [2024-11-18 10:28:41,990 INFO L78 Accepts]: Start accepts. Automaton has 154710 states and 171384 transitions. Word has length 568 [2024-11-18 10:28:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:41,990 INFO L471 AbstractCegarLoop]: Abstraction has 154710 states and 171384 transitions. [2024-11-18 10:28:41,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 10:28:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 154710 states and 171384 transitions. [2024-11-18 10:28:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2024-11-18 10:28:42,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:42,008 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:42,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:28:42,008 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:42,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:42,009 INFO L85 PathProgramCache]: Analyzing trace with hash -705218746, now seen corresponding path program 1 times [2024-11-18 10:28:42,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:42,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335784120] [2024-11-18 10:28:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:42,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-18 10:28:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335784120] [2024-11-18 10:28:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335784120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:42,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:42,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714644943] [2024-11-18 10:28:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:42,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:42,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:42,430 INFO L87 Difference]: Start difference. First operand 154710 states and 171384 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 10:28:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:46,529 INFO L93 Difference]: Finished difference Result 361988 states and 402918 transitions. [2024-11-18 10:28:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 582 [2024-11-18 10:28:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:46,813 INFO L225 Difference]: With dead ends: 361988 [2024-11-18 10:28:46,814 INFO L226 Difference]: Without dead ends: 208031 [2024-11-18 10:28:46,878 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 10:28:46,879 INFO L432 NwaCegarLoop]: 1240 mSDtfsCounter, 549 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:46,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1247 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 10:28:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208031 states. [2024-11-18 10:28:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208031 to 198268. [2024-11-18 10:28:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198268 states, 198267 states have (on average 1.0927184049791443) internal successors, (216650), 198267 states have internal predecessors, (216650), 0 states have call successors, (0), 0 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 10:28:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198268 states to 198268 states and 216650 transitions. [2024-11-18 10:28:49,968 INFO L78 Accepts]: Start accepts. Automaton has 198268 states and 216650 transitions. Word has length 582 [2024-11-18 10:28:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:49,970 INFO L471 AbstractCegarLoop]: Abstraction has 198268 states and 216650 transitions. [2024-11-18 10:28:49,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 10:28:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 198268 states and 216650 transitions. [2024-11-18 10:28:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2024-11-18 10:28:49,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:49,989 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:28:49,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:28:49,989 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:49,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1377065374, now seen corresponding path program 1 times [2024-11-18 10:28:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:49,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581909129] [2024-11-18 10:28:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 728 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-18 10:28:50,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:50,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581909129] [2024-11-18 10:28:50,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581909129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:50,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:50,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:28:50,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368795659] [2024-11-18 10:28:50,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:50,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:28:50,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:28:50,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:28:50,950 INFO L87 Difference]: Start difference. First operand 198268 states and 216650 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 10:28:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:28:54,201 INFO L93 Difference]: Finished difference Result 398787 states and 435558 transitions. [2024-11-18 10:28:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:28:54,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 607 [2024-11-18 10:28:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:28:54,451 INFO L225 Difference]: With dead ends: 398787 [2024-11-18 10:28:54,452 INFO L226 Difference]: Without dead ends: 201272 [2024-11-18 10:28:54,539 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 10:28:54,539 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 758 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 10:28:54,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 228 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 2221 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 10:28:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201272 states. [2024-11-18 10:28:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201272 to 196015. [2024-11-18 10:28:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196015 states, 196014 states have (on average 1.0794637117756896) internal successors, (211590), 196014 states have internal predecessors, (211590), 0 states have call successors, (0), 0 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 10:28:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196015 states to 196015 states and 211590 transitions. [2024-11-18 10:28:57,494 INFO L78 Accepts]: Start accepts. Automaton has 196015 states and 211590 transitions. Word has length 607 [2024-11-18 10:28:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:28:57,497 INFO L471 AbstractCegarLoop]: Abstraction has 196015 states and 211590 transitions. [2024-11-18 10:28:57,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 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 10:28:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 196015 states and 211590 transitions. [2024-11-18 10:28:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2024-11-18 10:28:57,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:28:57,519 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:57,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:28:57,520 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:28:57,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:28:57,520 INFO L85 PathProgramCache]: Analyzing trace with hash 745910693, now seen corresponding path program 1 times [2024-11-18 10:28:57,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:28:57,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478571785] [2024-11-18 10:28:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:28:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:28:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:28:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 768 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2024-11-18 10:28:58,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:28:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478571785] [2024-11-18 10:28:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478571785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:28:58,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:28:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 10:28:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258844935] [2024-11-18 10:28:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:28:58,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 10:28:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:28:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 10:28:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:28:58,717 INFO L87 Difference]: Start difference. First operand 196015 states and 211590 transitions. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)