./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.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 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:14:43,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:14:43,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:14:43,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:14:43,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:14:43,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:14:43,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:14:43,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:14:43,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:14:43,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:14:43,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:14:43,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:14:43,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:14:43,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:14:43,270 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:14:43,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:14:43,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:14:43,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:14:43,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:14:43,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:14:43,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:14:43,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:14:43,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:14:43,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:14:43,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:14:43,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:14:43,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:14:43,279 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:14:43,280 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:14:43,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:14:43,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:14:43,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:14:43,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:14:43,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:14:43,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:14:43,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:14:43,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:14:43,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:14:43,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:14:43,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:14:43,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:14:43,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:14:43,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 [2024-11-16 08:14:43,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:14:43,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:14:43,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:14:43,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:14:43,571 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:14:43,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-16 08:14:45,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:14:45,312 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:14:45,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-16 08:14:45,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b012fc166/8a931be040304e489b0297756853bd57/FLAG8e8ab66d3 [2024-11-16 08:14:45,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b012fc166/8a931be040304e489b0297756853bd57 [2024-11-16 08:14:45,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:14:45,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:14:45,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:14:45,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:14:45,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:14:45,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7580145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45, skipping insertion in model container [2024-11-16 08:14:45,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:14:45,589 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/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2024-11-16 08:14:45,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:14:45,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:14:45,649 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/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2024-11-16 08:14:45,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:14:45,669 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:14:45,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45 WrapperNode [2024-11-16 08:14:45,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:14:45,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:14:45,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:14:45,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:14:45,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,719 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 246 [2024-11-16 08:14:45,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:14:45,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:14:45,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:14:45,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:14:45,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,750 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]. [2024-11-16 08:14:45,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:14:45,768 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:14:45,768 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:14:45,768 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:14:45,769 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (1/1) ... [2024-11-16 08:14:45,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:14:45,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:14:45,832 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) [2024-11-16 08:14:45,835 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 [2024-11-16 08:14:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:14:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:14:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:14:45,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:14:46,005 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:14:46,007 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:14:46,418 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-16 08:14:46,418 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:14:46,440 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:14:46,440 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:14:46,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:14:46 BoogieIcfgContainer [2024-11-16 08:14:46,441 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:14:46,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:14:46,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:14:46,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:14:46,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:14:45" (1/3) ... [2024-11-16 08:14:46,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2bcc47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:14:46, skipping insertion in model container [2024-11-16 08:14:46,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:45" (2/3) ... [2024-11-16 08:14:46,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2bcc47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:14:46, skipping insertion in model container [2024-11-16 08:14:46,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:14:46" (3/3) ... [2024-11-16 08:14:46,452 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-16 08:14:46,469 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:14:46,470 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:14:46,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:14:46,543 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;@2f22503e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:14:46,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:14:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 69 states have (on average 1.6666666666666667) internal successors, (115), 70 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 08:14:46,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:46,555 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] [2024-11-16 08:14:46,556 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:46,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash 196648934, now seen corresponding path program 1 times [2024-11-16 08:14:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:46,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150053332] [2024-11-16 08:14:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:46,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:46,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150053332] [2024-11-16 08:14:46,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150053332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:46,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:46,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 08:14:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826330781] [2024-11-16 08:14:46,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:46,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 08:14:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 08:14:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 08:14:46,863 INFO L87 Difference]: Start difference. First operand has 71 states, 69 states have (on average 1.6666666666666667) internal successors, (115), 70 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:46,883 INFO L93 Difference]: Finished difference Result 115 states and 186 transitions. [2024-11-16 08:14:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 08:14:46,885 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 08:14:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:46,892 INFO L225 Difference]: With dead ends: 115 [2024-11-16 08:14:46,892 INFO L226 Difference]: Without dead ends: 66 [2024-11-16 08:14:46,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 08:14:46,897 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:46,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-16 08:14:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-16 08:14:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.646153846153846) internal successors, (107), 65 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 107 transitions. [2024-11-16 08:14:46,928 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 107 transitions. Word has length 27 [2024-11-16 08:14:46,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:46,928 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 107 transitions. [2024-11-16 08:14:46,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 107 transitions. [2024-11-16 08:14:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 08:14:46,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:46,930 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] [2024-11-16 08:14:46,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:14:46,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:46,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1841407355, now seen corresponding path program 1 times [2024-11-16 08:14:46,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:46,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030274051] [2024-11-16 08:14:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:46,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030274051] [2024-11-16 08:14:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030274051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:47,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:47,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:14:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676797543] [2024-11-16 08:14:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:47,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:14:47,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:14:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:14:47,279 INFO L87 Difference]: Start difference. First operand 66 states and 107 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:47,358 INFO L93 Difference]: Finished difference Result 113 states and 178 transitions. [2024-11-16 08:14:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:14:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 08:14:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:47,359 INFO L225 Difference]: With dead ends: 113 [2024-11-16 08:14:47,360 INFO L226 Difference]: Without dead ends: 66 [2024-11-16 08:14:47,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:14:47,361 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:47,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 398 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:14:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-16 08:14:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-16 08:14:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 65 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2024-11-16 08:14:47,371 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 27 [2024-11-16 08:14:47,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:47,371 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2024-11-16 08:14:47,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2024-11-16 08:14:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 08:14:47,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:47,373 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] [2024-11-16 08:14:47,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:14:47,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:47,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash -921456267, now seen corresponding path program 1 times [2024-11-16 08:14:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:47,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615158175] [2024-11-16 08:14:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:47,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615158175] [2024-11-16 08:14:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615158175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:47,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:14:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610000101] [2024-11-16 08:14:47,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:47,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:14:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:47,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:14:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:14:47,515 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:47,545 INFO L93 Difference]: Finished difference Result 144 states and 210 transitions. [2024-11-16 08:14:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:14:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 08:14:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:47,549 INFO L225 Difference]: With dead ends: 144 [2024-11-16 08:14:47,550 INFO L226 Difference]: Without dead ends: 101 [2024-11-16 08:14:47,550 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 [2024-11-16 08:14:47,551 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 50 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:47,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 188 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-16 08:14:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2024-11-16 08:14:47,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.443298969072165) internal successors, (140), 97 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 140 transitions. [2024-11-16 08:14:47,568 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 140 transitions. Word has length 43 [2024-11-16 08:14:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:47,568 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 140 transitions. [2024-11-16 08:14:47,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 140 transitions. [2024-11-16 08:14:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 08:14:47,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:47,570 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] [2024-11-16 08:14:47,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:14:47,570 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:47,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:47,571 INFO L85 PathProgramCache]: Analyzing trace with hash 750777448, now seen corresponding path program 1 times [2024-11-16 08:14:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:47,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632838609] [2024-11-16 08:14:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632838609] [2024-11-16 08:14:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632838609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:47,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:14:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134125916] [2024-11-16 08:14:47,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:47,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:14:47,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:14:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:14:47,685 INFO L87 Difference]: Start difference. First operand 98 states and 140 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:47,768 INFO L93 Difference]: Finished difference Result 398 states and 608 transitions. [2024-11-16 08:14:47,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:14:47,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 08:14:47,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:47,778 INFO L225 Difference]: With dead ends: 398 [2024-11-16 08:14:47,778 INFO L226 Difference]: Without dead ends: 323 [2024-11-16 08:14:47,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:14:47,780 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 396 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:47,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 370 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-16 08:14:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 170. [2024-11-16 08:14:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.485207100591716) internal successors, (251), 169 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 251 transitions. [2024-11-16 08:14:47,799 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 251 transitions. Word has length 43 [2024-11-16 08:14:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:47,800 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 251 transitions. [2024-11-16 08:14:47,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 251 transitions. [2024-11-16 08:14:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 08:14:47,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:47,802 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] [2024-11-16 08:14:47,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:14:47,802 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:47,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1577662434, now seen corresponding path program 1 times [2024-11-16 08:14:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863462185] [2024-11-16 08:14:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:47,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:48,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863462185] [2024-11-16 08:14:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863462185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:48,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:14:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184915519] [2024-11-16 08:14:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:48,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:14:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:14:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:14:48,166 INFO L87 Difference]: Start difference. First operand 170 states and 251 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:48,224 INFO L93 Difference]: Finished difference Result 185 states and 269 transitions. [2024-11-16 08:14:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:14:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-16 08:14:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:48,227 INFO L225 Difference]: With dead ends: 185 [2024-11-16 08:14:48,227 INFO L226 Difference]: Without dead ends: 182 [2024-11-16 08:14:48,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:14:48,228 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:48,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-16 08:14:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-16 08:14:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.4530386740331491) internal successors, (263), 181 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 263 transitions. [2024-11-16 08:14:48,240 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 263 transitions. Word has length 44 [2024-11-16 08:14:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:48,240 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 263 transitions. [2024-11-16 08:14:48,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 263 transitions. [2024-11-16 08:14:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 08:14:48,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:48,242 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] [2024-11-16 08:14:48,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:14:48,243 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:48,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:48,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1087410920, now seen corresponding path program 1 times [2024-11-16 08:14:48,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:48,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065541394] [2024-11-16 08:14:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065541394] [2024-11-16 08:14:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065541394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:48,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:14:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112451622] [2024-11-16 08:14:48,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:48,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:14:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:48,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:14:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:14:48,353 INFO L87 Difference]: Start difference. First operand 182 states and 263 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:48,377 INFO L93 Difference]: Finished difference Result 470 states and 693 transitions. [2024-11-16 08:14:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:14:48,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-16 08:14:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:48,380 INFO L225 Difference]: With dead ends: 470 [2024-11-16 08:14:48,380 INFO L226 Difference]: Without dead ends: 311 [2024-11-16 08:14:48,381 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 [2024-11-16 08:14:48,382 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 38 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:48,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 149 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-16 08:14:48,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 304. [2024-11-16 08:14:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.448844884488449) internal successors, (439), 303 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 439 transitions. [2024-11-16 08:14:48,420 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 439 transitions. Word has length 45 [2024-11-16 08:14:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:48,421 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 439 transitions. [2024-11-16 08:14:48,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 439 transitions. [2024-11-16 08:14:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 08:14:48,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:48,423 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] [2024-11-16 08:14:48,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:14:48,423 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1384724593, now seen corresponding path program 1 times [2024-11-16 08:14:48,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903380330] [2024-11-16 08:14:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:48,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903380330] [2024-11-16 08:14:48,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903380330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:48,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:48,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:14:48,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534359125] [2024-11-16 08:14:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:48,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:14:48,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:14:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:14:48,511 INFO L87 Difference]: Start difference. First operand 304 states and 439 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:48,540 INFO L93 Difference]: Finished difference Result 802 states and 1159 transitions. [2024-11-16 08:14:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:14:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-16 08:14:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:48,543 INFO L225 Difference]: With dead ends: 802 [2024-11-16 08:14:48,544 INFO L226 Difference]: Without dead ends: 521 [2024-11-16 08:14:48,546 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 [2024-11-16 08:14:48,548 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 46 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:48,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 186 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-11-16 08:14:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 518. [2024-11-16 08:14:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.4177949709864603) internal successors, (733), 517 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 733 transitions. [2024-11-16 08:14:48,576 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 733 transitions. Word has length 46 [2024-11-16 08:14:48,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:48,576 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 733 transitions. [2024-11-16 08:14:48,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,577 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 733 transitions. [2024-11-16 08:14:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 08:14:48,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:48,582 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] [2024-11-16 08:14:48,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:14:48,583 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:48,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:48,583 INFO L85 PathProgramCache]: Analyzing trace with hash -378207534, now seen corresponding path program 1 times [2024-11-16 08:14:48,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:48,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860404371] [2024-11-16 08:14:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:48,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860404371] [2024-11-16 08:14:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860404371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:14:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904818341] [2024-11-16 08:14:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:48,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:14:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:14:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:14:48,657 INFO L87 Difference]: Start difference. First operand 518 states and 733 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:48,685 INFO L93 Difference]: Finished difference Result 1016 states and 1454 transitions. [2024-11-16 08:14:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:14:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 08:14:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:48,689 INFO L225 Difference]: With dead ends: 1016 [2024-11-16 08:14:48,689 INFO L226 Difference]: Without dead ends: 732 [2024-11-16 08:14:48,690 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 [2024-11-16 08:14:48,691 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 51 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:48,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 200 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-16 08:14:48,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 729. [2024-11-16 08:14:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.4065934065934067) internal successors, (1024), 728 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1024 transitions. [2024-11-16 08:14:48,727 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1024 transitions. Word has length 47 [2024-11-16 08:14:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:48,727 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1024 transitions. [2024-11-16 08:14:48,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1024 transitions. [2024-11-16 08:14:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:14:48,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:48,730 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:48,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:14:48,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:48,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash -513640286, now seen corresponding path program 1 times [2024-11-16 08:14:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992875987] [2024-11-16 08:14:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:14:48,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:48,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992875987] [2024-11-16 08:14:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992875987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:48,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:48,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:14:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514622720] [2024-11-16 08:14:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:48,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:14:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:14:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:14:48,857 INFO L87 Difference]: Start difference. First operand 729 states and 1024 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:48,922 INFO L93 Difference]: Finished difference Result 1685 states and 2408 transitions. [2024-11-16 08:14:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:14:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 66 [2024-11-16 08:14:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:48,928 INFO L225 Difference]: With dead ends: 1685 [2024-11-16 08:14:48,928 INFO L226 Difference]: Without dead ends: 1326 [2024-11-16 08:14:48,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:14:48,929 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 234 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:48,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 393 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2024-11-16 08:14:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1073. [2024-11-16 08:14:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.4104477611940298) internal successors, (1512), 1072 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1512 transitions. [2024-11-16 08:14:48,961 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1512 transitions. Word has length 66 [2024-11-16 08:14:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:48,962 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1512 transitions. [2024-11-16 08:14:48,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1512 transitions. [2024-11-16 08:14:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 08:14:48,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:48,963 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:48,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:14:48,964 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:48,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash 856636675, now seen corresponding path program 1 times [2024-11-16 08:14:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:48,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266484239] [2024-11-16 08:14:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:14:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:49,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266484239] [2024-11-16 08:14:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266484239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:49,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:14:49,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014813318] [2024-11-16 08:14:49,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:49,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:14:49,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:14:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:14:49,064 INFO L87 Difference]: Start difference. First operand 1073 states and 1512 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:49,135 INFO L93 Difference]: Finished difference Result 2029 states and 2896 transitions. [2024-11-16 08:14:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:14:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 66 [2024-11-16 08:14:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:49,141 INFO L225 Difference]: With dead ends: 2029 [2024-11-16 08:14:49,142 INFO L226 Difference]: Without dead ends: 1670 [2024-11-16 08:14:49,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:14:49,143 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 241 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:49,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 376 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2024-11-16 08:14:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1417. [2024-11-16 08:14:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.4124293785310735) internal successors, (2000), 1416 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2000 transitions. [2024-11-16 08:14:49,204 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2000 transitions. Word has length 66 [2024-11-16 08:14:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:49,204 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 2000 transitions. [2024-11-16 08:14:49,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2000 transitions. [2024-11-16 08:14:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:14:49,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:49,206 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:49,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:14:49,207 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:49,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1294192576, now seen corresponding path program 1 times [2024-11-16 08:14:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:49,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593164743] [2024-11-16 08:14:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:49,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593164743] [2024-11-16 08:14:49,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593164743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:49,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:49,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:14:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949754186] [2024-11-16 08:14:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:49,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:14:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:14:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:14:49,339 INFO L87 Difference]: Start difference. First operand 1417 states and 2000 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:49,374 INFO L93 Difference]: Finished difference Result 2811 states and 3976 transitions. [2024-11-16 08:14:49,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:14:49,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 08:14:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:49,381 INFO L225 Difference]: With dead ends: 2811 [2024-11-16 08:14:49,382 INFO L226 Difference]: Without dead ends: 1420 [2024-11-16 08:14:49,383 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 [2024-11-16 08:14:49,384 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:49,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2024-11-16 08:14:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1417. [2024-11-16 08:14:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.3954802259887005) internal successors, (1976), 1416 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1976 transitions. [2024-11-16 08:14:49,422 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1976 transitions. Word has length 67 [2024-11-16 08:14:49,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:49,423 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 1976 transitions. [2024-11-16 08:14:49,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:49,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1976 transitions. [2024-11-16 08:14:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:14:49,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:49,425 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:49,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:14:49,425 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:49,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash -714249203, now seen corresponding path program 1 times [2024-11-16 08:14:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:49,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816523736] [2024-11-16 08:14:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816523736] [2024-11-16 08:14:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816523736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:14:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229863597] [2024-11-16 08:14:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:14:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:14:50,024 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) [2024-11-16 08:14:50,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:14:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:50,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 08:14:50,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:14:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:50,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:14:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229863597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:14:50,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:14:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 8] total 20 [2024-11-16 08:14:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214248707] [2024-11-16 08:14:50,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:14:50,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 08:14:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 08:14:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-16 08:14:50,907 INFO L87 Difference]: Start difference. First operand 1417 states and 1976 transitions. Second operand has 20 states, 20 states have (on average 9.6) internal successors, (192), 20 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:57,680 INFO L93 Difference]: Finished difference Result 15303 states and 21246 transitions. [2024-11-16 08:14:57,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-16 08:14:57,681 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.6) internal successors, (192), 20 states have internal predecessors, (192), 0 states have call successors, (0), 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 67 [2024-11-16 08:14:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:57,729 INFO L225 Difference]: With dead ends: 15303 [2024-11-16 08:14:57,729 INFO L226 Difference]: Without dead ends: 14324 [2024-11-16 08:14:57,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8793 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3398, Invalid=18952, Unknown=0, NotChecked=0, Total=22350 [2024-11-16 08:14:57,739 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 3358 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:57,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3358 Valid, 1484 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 08:14:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14324 states. [2024-11-16 08:14:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14324 to 11219. [2024-11-16 08:14:58,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11219 states, 11218 states have (on average 1.3694063112854342) internal successors, (15362), 11218 states have internal predecessors, (15362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11219 states to 11219 states and 15362 transitions. [2024-11-16 08:14:58,157 INFO L78 Accepts]: Start accepts. Automaton has 11219 states and 15362 transitions. Word has length 67 [2024-11-16 08:14:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:58,158 INFO L471 AbstractCegarLoop]: Abstraction has 11219 states and 15362 transitions. [2024-11-16 08:14:58,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.6) internal successors, (192), 20 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11219 states and 15362 transitions. [2024-11-16 08:14:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:14:58,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:58,159 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:58,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:14:58,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 08:14:58,360 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:58,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash 720449265, now seen corresponding path program 1 times [2024-11-16 08:14:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911340557] [2024-11-16 08:14:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:14:58,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911340557] [2024-11-16 08:14:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911340557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:58,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:14:58,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043863307] [2024-11-16 08:14:58,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:58,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:14:58,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:58,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:14:58,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:14:58,460 INFO L87 Difference]: Start difference. First operand 11219 states and 15362 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:58,767 INFO L93 Difference]: Finished difference Result 18951 states and 26144 transitions. [2024-11-16 08:14:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:14:58,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 68 [2024-11-16 08:14:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:58,826 INFO L225 Difference]: With dead ends: 18951 [2024-11-16 08:14:58,826 INFO L226 Difference]: Without dead ends: 16422 [2024-11-16 08:14:58,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:14:58,835 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 226 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:58,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 438 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:58,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16422 states. [2024-11-16 08:14:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16422 to 13735. [2024-11-16 08:14:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13735 states, 13734 states have (on average 1.3674093490607253) internal successors, (18780), 13734 states have internal predecessors, (18780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13735 states to 13735 states and 18780 transitions. [2024-11-16 08:14:59,272 INFO L78 Accepts]: Start accepts. Automaton has 13735 states and 18780 transitions. Word has length 68 [2024-11-16 08:14:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:59,272 INFO L471 AbstractCegarLoop]: Abstraction has 13735 states and 18780 transitions. [2024-11-16 08:14:59,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13735 states and 18780 transitions. [2024-11-16 08:14:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 08:14:59,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:59,276 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:59,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:14:59,276 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:59,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash -20803081, now seen corresponding path program 1 times [2024-11-16 08:14:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:59,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008406144] [2024-11-16 08:14:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:14:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:14:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:14:59,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008406144] [2024-11-16 08:14:59,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008406144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:14:59,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:14:59,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:14:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929937115] [2024-11-16 08:14:59,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:14:59,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:14:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:14:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:14:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:14:59,358 INFO L87 Difference]: Start difference. First operand 13735 states and 18780 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:14:59,570 INFO L93 Difference]: Finished difference Result 20212 states and 27507 transitions. [2024-11-16 08:14:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:14:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2024-11-16 08:14:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:14:59,585 INFO L225 Difference]: With dead ends: 20212 [2024-11-16 08:14:59,586 INFO L226 Difference]: Without dead ends: 6503 [2024-11-16 08:14:59,603 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 [2024-11-16 08:14:59,604 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 35 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:14:59,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:14:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2024-11-16 08:14:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 5280. [2024-11-16 08:14:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5279 states have (on average 1.3311233188103808) internal successors, (7027), 5279 states have internal predecessors, (7027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 7027 transitions. [2024-11-16 08:14:59,812 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 7027 transitions. Word has length 69 [2024-11-16 08:14:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:14:59,812 INFO L471 AbstractCegarLoop]: Abstraction has 5280 states and 7027 transitions. [2024-11-16 08:14:59,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:14:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 7027 transitions. [2024-11-16 08:14:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 08:14:59,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:14:59,814 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:14:59,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:14:59,814 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:14:59,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:14:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1653891295, now seen corresponding path program 1 times [2024-11-16 08:14:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:14:59,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629982903] [2024-11-16 08:14:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:14:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:14:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:00,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629982903] [2024-11-16 08:15:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629982903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:15:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308761897] [2024-11-16 08:15:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:00,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:15:00,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:15:00,202 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) [2024-11-16 08:15:00,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:15:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:00,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 08:15:00,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:15:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:01,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:15:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308761897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:15:02,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:15:02,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-16 08:15:02,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009902997] [2024-11-16 08:15:02,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:15:02,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 08:15:02,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:02,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 08:15:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2024-11-16 08:15:02,902 INFO L87 Difference]: Start difference. First operand 5280 states and 7027 transitions. Second operand has 32 states, 32 states have (on average 5.78125) internal successors, (185), 32 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:12,422 INFO L93 Difference]: Finished difference Result 45443 states and 60635 transitions. [2024-11-16 08:15:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-16 08:15:12,423 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.78125) internal successors, (185), 32 states have internal predecessors, (185), 0 states have call successors, (0), 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 71 [2024-11-16 08:15:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:12,494 INFO L225 Difference]: With dead ends: 45443 [2024-11-16 08:15:12,494 INFO L226 Difference]: Without dead ends: 40214 [2024-11-16 08:15:12,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16089 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=7044, Invalid=33558, Unknown=0, NotChecked=0, Total=40602 [2024-11-16 08:15:12,519 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 7583 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7583 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:12,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7583 Valid, 1513 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:15:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40214 states. [2024-11-16 08:15:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40214 to 17754. [2024-11-16 08:15:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17754 states, 17753 states have (on average 1.312003605024503) internal successors, (23292), 17753 states have internal predecessors, (23292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17754 states to 17754 states and 23292 transitions. [2024-11-16 08:15:13,170 INFO L78 Accepts]: Start accepts. Automaton has 17754 states and 23292 transitions. Word has length 71 [2024-11-16 08:15:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:13,170 INFO L471 AbstractCegarLoop]: Abstraction has 17754 states and 23292 transitions. [2024-11-16 08:15:13,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.78125) internal successors, (185), 32 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 17754 states and 23292 transitions. [2024-11-16 08:15:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:15:13,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:13,172 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:15:13,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:15:13,372 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,SelfDestructingSolverStorable14 [2024-11-16 08:15:13,373 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:13,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1747089370, now seen corresponding path program 1 times [2024-11-16 08:15:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911400674] [2024-11-16 08:15:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:13,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911400674] [2024-11-16 08:15:13,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911400674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:15:13,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:15:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:15:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234166243] [2024-11-16 08:15:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:15:13,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:15:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:15:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:15:13,420 INFO L87 Difference]: Start difference. First operand 17754 states and 23292 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:13,959 INFO L93 Difference]: Finished difference Result 41940 states and 54655 transitions. [2024-11-16 08:15:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:15:13,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 08:15:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:13,999 INFO L225 Difference]: With dead ends: 41940 [2024-11-16 08:15:13,999 INFO L226 Difference]: Without dead ends: 24290 [2024-11-16 08:15:14,022 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 [2024-11-16 08:15:14,022 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 42 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:14,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 171 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:15:14,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24290 states. [2024-11-16 08:15:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24290 to 24287. [2024-11-16 08:15:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24287 states, 24286 states have (on average 1.2836613686897802) internal successors, (31175), 24286 states have internal predecessors, (31175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24287 states to 24287 states and 31175 transitions. [2024-11-16 08:15:14,853 INFO L78 Accepts]: Start accepts. Automaton has 24287 states and 31175 transitions. Word has length 72 [2024-11-16 08:15:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:14,854 INFO L471 AbstractCegarLoop]: Abstraction has 24287 states and 31175 transitions. [2024-11-16 08:15:14,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:14,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24287 states and 31175 transitions. [2024-11-16 08:15:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:15:14,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:14,856 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:15:14,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:15:14,856 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:14,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2067508120, now seen corresponding path program 1 times [2024-11-16 08:15:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95959121] [2024-11-16 08:15:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:14,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:14,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95959121] [2024-11-16 08:15:14,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95959121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:15:14,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:15:14,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:15:14,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552756031] [2024-11-16 08:15:14,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:15:14,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:15:14,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:15:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:15:14,912 INFO L87 Difference]: Start difference. First operand 24287 states and 31175 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:15,615 INFO L93 Difference]: Finished difference Result 55518 states and 71608 transitions. [2024-11-16 08:15:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:15:15,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 08:15:15,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:15,664 INFO L225 Difference]: With dead ends: 55518 [2024-11-16 08:15:15,665 INFO L226 Difference]: Without dead ends: 31516 [2024-11-16 08:15:15,697 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 [2024-11-16 08:15:15,698 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:15,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 209 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:15:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31516 states. [2024-11-16 08:15:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31516 to 25240. [2024-11-16 08:15:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25240 states, 25239 states have (on average 1.2778240025357581) internal successors, (32251), 25239 states have internal predecessors, (32251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25240 states to 25240 states and 32251 transitions. [2024-11-16 08:15:16,454 INFO L78 Accepts]: Start accepts. Automaton has 25240 states and 32251 transitions. Word has length 72 [2024-11-16 08:15:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:16,454 INFO L471 AbstractCegarLoop]: Abstraction has 25240 states and 32251 transitions. [2024-11-16 08:15:16,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 25240 states and 32251 transitions. [2024-11-16 08:15:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:15:16,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:16,457 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 08:15:16,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:15:16,457 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:16,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1364530629, now seen corresponding path program 1 times [2024-11-16 08:15:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:16,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346247801] [2024-11-16 08:15:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:16,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:16,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346247801] [2024-11-16 08:15:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346247801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:15:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877139889] [2024-11-16 08:15:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:16,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:15:16,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:15:16,553 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) [2024-11-16 08:15:16,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:15:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:16,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:15:16,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:15:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:16,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:15:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877139889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:15:16,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:15:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 08:15:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454066809] [2024-11-16 08:15:16,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:15:16,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 08:15:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 08:15:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:15:16,852 INFO L87 Difference]: Start difference. First operand 25240 states and 32251 transitions. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:17,322 INFO L93 Difference]: Finished difference Result 43306 states and 55546 transitions. [2024-11-16 08:15:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:15:17,323 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 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 72 [2024-11-16 08:15:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:17,348 INFO L225 Difference]: With dead ends: 43306 [2024-11-16 08:15:17,349 INFO L226 Difference]: Without dead ends: 19095 [2024-11-16 08:15:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 08:15:17,370 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 466 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:17,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 256 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:15:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19095 states. [2024-11-16 08:15:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19095 to 18370. [2024-11-16 08:15:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18370 states, 18369 states have (on average 1.2524906091785073) internal successors, (23007), 18369 states have internal predecessors, (23007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18370 states to 18370 states and 23007 transitions. [2024-11-16 08:15:17,945 INFO L78 Accepts]: Start accepts. Automaton has 18370 states and 23007 transitions. Word has length 72 [2024-11-16 08:15:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:17,945 INFO L471 AbstractCegarLoop]: Abstraction has 18370 states and 23007 transitions. [2024-11-16 08:15:17,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 10 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 18370 states and 23007 transitions. [2024-11-16 08:15:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 08:15:17,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:17,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:17,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 08:15:18,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 08:15:18,148 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:18,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash -597528069, now seen corresponding path program 1 times [2024-11-16 08:15:18,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:18,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369925860] [2024-11-16 08:15:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369925860] [2024-11-16 08:15:18,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369925860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:15:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815579214] [2024-11-16 08:15:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:18,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:15:18,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:15:18,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:15:18,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:15:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:19,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 08:15:19,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:15:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:22,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:15:24,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:15:24,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815579214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:15:24,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:15:24,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 42 [2024-11-16 08:15:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079032103] [2024-11-16 08:15:24,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:15:24,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 08:15:24,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 08:15:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1500, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 08:15:24,607 INFO L87 Difference]: Start difference. First operand 18370 states and 23007 transitions. Second operand has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 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) [2024-11-16 08:15:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:40,684 INFO L93 Difference]: Finished difference Result 81028 states and 101674 transitions. [2024-11-16 08:15:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-16 08:15:40,685 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 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 73 [2024-11-16 08:15:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:40,753 INFO L225 Difference]: With dead ends: 81028 [2024-11-16 08:15:40,753 INFO L226 Difference]: Without dead ends: 62919 [2024-11-16 08:15:40,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15014 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=7663, Invalid=28627, Unknown=0, NotChecked=0, Total=36290 [2024-11-16 08:15:40,779 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 5323 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:40,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5323 Valid, 2514 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 08:15:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62919 states. [2024-11-16 08:15:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62919 to 37276. [2024-11-16 08:15:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37276 states, 37275 states have (on average 1.2533869885982563) internal successors, (46720), 37275 states have internal predecessors, (46720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37276 states to 37276 states and 46720 transitions. [2024-11-16 08:15:42,485 INFO L78 Accepts]: Start accepts. Automaton has 37276 states and 46720 transitions. Word has length 73 [2024-11-16 08:15:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:42,485 INFO L471 AbstractCegarLoop]: Abstraction has 37276 states and 46720 transitions. [2024-11-16 08:15:42,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.642857142857143) internal successors, (195), 42 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) [2024-11-16 08:15:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 37276 states and 46720 transitions. [2024-11-16 08:15:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 08:15:42,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:42,503 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:42,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 08:15:42,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:15:42,704 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:42,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash 276548443, now seen corresponding path program 1 times [2024-11-16 08:15:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:42,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115958178] [2024-11-16 08:15:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:42,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 08:15:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115958178] [2024-11-16 08:15:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115958178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:15:42,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:15:42,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:15:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60390044] [2024-11-16 08:15:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:15:42,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:15:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:15:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:15:42,782 INFO L87 Difference]: Start difference. First operand 37276 states and 46720 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:44,393 INFO L93 Difference]: Finished difference Result 92506 states and 115631 transitions. [2024-11-16 08:15:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:15:44,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 116 [2024-11-16 08:15:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:44,460 INFO L225 Difference]: With dead ends: 92506 [2024-11-16 08:15:44,460 INFO L226 Difference]: Without dead ends: 56164 [2024-11-16 08:15:44,493 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 [2024-11-16 08:15:44,493 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 39 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:44,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 177 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:15:44,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56164 states. [2024-11-16 08:15:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56164 to 56161. [2024-11-16 08:15:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56161 states, 56160 states have (on average 1.225462962962963) internal successors, (68822), 56160 states have internal predecessors, (68822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56161 states to 56161 states and 68822 transitions. [2024-11-16 08:15:46,430 INFO L78 Accepts]: Start accepts. Automaton has 56161 states and 68822 transitions. Word has length 116 [2024-11-16 08:15:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:46,430 INFO L471 AbstractCegarLoop]: Abstraction has 56161 states and 68822 transitions. [2024-11-16 08:15:46,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 56161 states and 68822 transitions. [2024-11-16 08:15:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 08:15:46,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:46,565 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:46,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 08:15:46,565 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:46,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1636838535, now seen corresponding path program 1 times [2024-11-16 08:15:46,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:46,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159633034] [2024-11-16 08:15:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 08:15:46,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:46,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159633034] [2024-11-16 08:15:46,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159633034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:15:46,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:15:46,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:15:46,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969853028] [2024-11-16 08:15:46,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:15:46,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:15:46,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:46,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:15:46,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:15:46,631 INFO L87 Difference]: Start difference. First operand 56161 states and 68822 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:48,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:48,309 INFO L93 Difference]: Finished difference Result 91558 states and 112074 transitions. [2024-11-16 08:15:48,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:15:48,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 116 [2024-11-16 08:15:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:48,368 INFO L225 Difference]: With dead ends: 91558 [2024-11-16 08:15:48,368 INFO L226 Difference]: Without dead ends: 49494 [2024-11-16 08:15:48,403 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 [2024-11-16 08:15:48,404 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 24 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:48,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:15:48,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49494 states. [2024-11-16 08:15:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49494 to 44525. [2024-11-16 08:15:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44525 states, 44524 states have (on average 1.213749887701015) internal successors, (54041), 44524 states have internal predecessors, (54041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44525 states to 44525 states and 54041 transitions. [2024-11-16 08:15:50,635 INFO L78 Accepts]: Start accepts. Automaton has 44525 states and 54041 transitions. Word has length 116 [2024-11-16 08:15:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:50,635 INFO L471 AbstractCegarLoop]: Abstraction has 44525 states and 54041 transitions. [2024-11-16 08:15:50,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:50,635 INFO L276 IsEmpty]: Start isEmpty. Operand 44525 states and 54041 transitions. [2024-11-16 08:15:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 08:15:50,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:50,646 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:50,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 08:15:50,646 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:50,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1527317148, now seen corresponding path program 1 times [2024-11-16 08:15:50,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:50,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075235826] [2024-11-16 08:15:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 75 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 08:15:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075235826] [2024-11-16 08:15:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075235826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:15:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982169903] [2024-11-16 08:15:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:50,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:15:50,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:15:50,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:15:50,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 08:15:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:50,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 08:15:50,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:15:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 08:15:51,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:15:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 08:15:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982169903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:15:51,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:15:51,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-11-16 08:15:51,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592811550] [2024-11-16 08:15:51,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:15:51,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 08:15:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 08:15:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-16 08:15:51,325 INFO L87 Difference]: Start difference. First operand 44525 states and 54041 transitions. Second operand has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:53,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:53,013 INFO L93 Difference]: Finished difference Result 91544 states and 110834 transitions. [2024-11-16 08:15:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:15:53,014 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 0 states have call successors, (0), 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 117 [2024-11-16 08:15:53,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:53,084 INFO L225 Difference]: With dead ends: 91544 [2024-11-16 08:15:53,084 INFO L226 Difference]: Without dead ends: 48399 [2024-11-16 08:15:53,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-16 08:15:53,108 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 333 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:53,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 477 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:15:53,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48399 states. [2024-11-16 08:15:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48399 to 41790. [2024-11-16 08:15:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41790 states, 41789 states have (on average 1.2001962238866688) internal successors, (50155), 41789 states have internal predecessors, (50155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41790 states to 41790 states and 50155 transitions. [2024-11-16 08:15:55,233 INFO L78 Accepts]: Start accepts. Automaton has 41790 states and 50155 transitions. Word has length 117 [2024-11-16 08:15:55,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:55,233 INFO L471 AbstractCegarLoop]: Abstraction has 41790 states and 50155 transitions. [2024-11-16 08:15:55,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 41790 states and 50155 transitions. [2024-11-16 08:15:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-16 08:15:55,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:55,245 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:55,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 08:15:55,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 08:15:55,446 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:55,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1993263390, now seen corresponding path program 2 times [2024-11-16 08:15:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:55,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800656761] [2024-11-16 08:15:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-16 08:15:55,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:55,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800656761] [2024-11-16 08:15:55,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800656761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:15:55,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:15:55,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:15:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612807655] [2024-11-16 08:15:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:15:55,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:15:55,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:55,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:15:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:15:55,548 INFO L87 Difference]: Start difference. First operand 41790 states and 50155 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:56,705 INFO L93 Difference]: Finished difference Result 61923 states and 74418 transitions. [2024-11-16 08:15:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:15:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 117 [2024-11-16 08:15:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:56,737 INFO L225 Difference]: With dead ends: 61923 [2024-11-16 08:15:56,737 INFO L226 Difference]: Without dead ends: 22098 [2024-11-16 08:15:56,753 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 [2024-11-16 08:15:56,753 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 25 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:56,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:15:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22098 states. [2024-11-16 08:15:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22098 to 22095. [2024-11-16 08:15:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22095 states, 22094 states have (on average 1.1845749977369422) internal successors, (26172), 22094 states have internal predecessors, (26172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22095 states to 22095 states and 26172 transitions. [2024-11-16 08:15:57,583 INFO L78 Accepts]: Start accepts. Automaton has 22095 states and 26172 transitions. Word has length 117 [2024-11-16 08:15:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:57,584 INFO L471 AbstractCegarLoop]: Abstraction has 22095 states and 26172 transitions. [2024-11-16 08:15:57,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:57,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22095 states and 26172 transitions. [2024-11-16 08:15:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-16 08:15:57,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:57,589 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:57,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-16 08:15:57,589 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:57,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1947754504, now seen corresponding path program 1 times [2024-11-16 08:15:57,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53536512] [2024-11-16 08:15:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:15:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 08:15:57,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:15:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53536512] [2024-11-16 08:15:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53536512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:15:57,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:15:57,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:15:57,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529227447] [2024-11-16 08:15:57,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:15:57,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:15:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:15:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:15:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:15:57,645 INFO L87 Difference]: Start difference. First operand 22095 states and 26172 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:15:58,785 INFO L93 Difference]: Finished difference Result 27813 states and 32780 transitions. [2024-11-16 08:15:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:15:58,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 119 [2024-11-16 08:15:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:15:58,802 INFO L225 Difference]: With dead ends: 27813 [2024-11-16 08:15:58,802 INFO L226 Difference]: Without dead ends: 18515 [2024-11-16 08:15:58,806 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 [2024-11-16 08:15:58,807 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 36 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:15:58,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 196 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:15:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18515 states. [2024-11-16 08:15:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18515 to 18512. [2024-11-16 08:15:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18512 states, 18511 states have (on average 1.1622278645129922) internal successors, (21514), 18511 states have internal predecessors, (21514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18512 states to 18512 states and 21514 transitions. [2024-11-16 08:15:59,539 INFO L78 Accepts]: Start accepts. Automaton has 18512 states and 21514 transitions. Word has length 119 [2024-11-16 08:15:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:15:59,540 INFO L471 AbstractCegarLoop]: Abstraction has 18512 states and 21514 transitions. [2024-11-16 08:15:59,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:15:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18512 states and 21514 transitions. [2024-11-16 08:15:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-16 08:15:59,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:15:59,545 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:15:59,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-16 08:15:59,545 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:15:59,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:15:59,545 INFO L85 PathProgramCache]: Analyzing trace with hash 154575157, now seen corresponding path program 1 times [2024-11-16 08:15:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:15:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158680646] [2024-11-16 08:15:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:15:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:15:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:00,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158680646] [2024-11-16 08:16:00,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158680646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:16:00,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020895952] [2024-11-16 08:16:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:00,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:00,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:00,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:16:00,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 08:16:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:00,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 08:16:00,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:16:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:00,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:16:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:02,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020895952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:16:02,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:16:02,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-16 08:16:02,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039961016] [2024-11-16 08:16:02,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:16:02,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 08:16:02,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 08:16:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-16 08:16:02,385 INFO L87 Difference]: Start difference. First operand 18512 states and 21514 transitions. Second operand has 27 states, 27 states have (on average 10.11111111111111) internal successors, (273), 26 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)